内容
# GPT55 Model Gateway and Five x402 Project Hub
OpenAI-compatible GPT55 model gateway with GPT-5.6 Luna Standard as the default route, plus four standalone x402 projects for deterministic utilities, wallet safety, seller growth, and API key plus URL packs.
The canonical start/apply/buy URL is `https://gpt55.558686.xyz/x402/service`. Its primary offer is Key Pack 100 at `$11.1112`: one x402 payment delivers `$100` of OpenAI-compatible quota after a free URL-readiness preview. The Beijing deployment is maintained as five public x402 projects: `gpt55.558686.xyz` for the main model and MCP gateway, `x402-utils.558686.xyz` for deterministic utilities, `x402-wallet.558686.xyz` for wallet signing safety and spend control, `x402-seller.558686.xyz` for seller growth and directory conversion, and `x402-key.558686.xyz` for paid API key plus URL packs. Shared public-channel maintenance records live in [docs/channel-submission-pack/public-channel-maintenance-ledger.md](docs/channel-submission-pack/public-channel-maintenance-ledger.md).
## Start Here
- Human buyer, search engine, AI agent, x402 directory, MCP directory, or API marketplace: use `https://gpt55.558686.xyz/x402/service` as the canonical start/apply/buy entry, with machine JSON at `https://gpt55.558686.xyz/x402/service.json`. Route-level discovery lives at `https://gpt55.558686.xyz/projects/558686/`, `https://gpt55.558686.xyz/tools.json`, `https://gpt55.558686.xyz/apis.json`, and `https://gpt55.558686.xyz/directory-submission.json`. Public-channel state for all five Beijing x402 projects is recorded in [public-channel-maintenance-ledger.md](docs/channel-submission-pack/public-channel-maintenance-ledger.md).
- Buyer agent, MCP client, or agent runtime moving from quote probes to a real first paid setup: start with [examples/translate-first-purchase/](examples/translate-first-purchase/) as the lowest-friction first purchase, then use [examples/payment-failure-doctor/](examples/payment-failure-doctor/) or [examples/mcp-first-purchase-kit/](examples/mcp-first-purchase-kit/) as the next step depending on whether the buyer needs recovery or MCP setup, then [examples/buyer-client-adapter-pack/](examples/buyer-client-adapter-pack/) for buyer-owned `X-PAYMENT` wiring. It checks the live quote, verifies amount/network/`payTo`, and stops before payment.
- Seller/operator trying to understand why x402 quotes are not turning into paid calls: run [examples/checkout-dropoff-summary/](examples/checkout-dropoff-summary/) to separate quote-only traffic from payment-header, verify, and settle events, then run [examples/checkout-source-quality/](examples/checkout-source-quality/) to separate likely buyers from monitors, indexers, and internal tests. Both are read-only and never sign or pay.
- Buyer agent looking for the lowest-friction first paid proof: use `https://gpt55.558686.xyz/x402/translate-first-purchase`, then run [examples/translate-first-purchase/](examples/translate-first-purchase/) to quote `/v1/tools/translate` without signing or paying. Treat it as the first canary, not the final upgrade.
- Buyer agent or MCP client that already has a live 402 quote but needs a final allow/deny rule before wallet-owned payment: run [examples/agent-payment-risk-gate/](examples/agent-payment-risk-gate/) to check status, amount, network, `payTo`, spend cap, and receipt evidence without paying.
- Buyer, MCP client, wallet agent, or integrator with a live 402 quote but unclear official-client payment code: run [examples/client-compatibility-adapter/](examples/client-compatibility-adapter/) to quote `https://gpt55.558686.xyz/v1/tools/x402-client-compatibility-adapter` without paying. The paid result returns `compatibilityDecision`, `officialClientAdapter`, `firstPaymentClientAdapter`, `headerCompatibilityMap`, `sameRequestRetry`, `receiptRequirements`, and `stopConditions`.
- Buyer-owned wallet, MCP client, Flowise node, or agent runtime that needs copy-paste code to turn a live quote into a local `X-PAYMENT` retry: run [examples/buyer-client-adapter-pack/](examples/buyer-client-adapter-pack/) to quote `https://gpt55.558686.xyz/v1/tools/x402-buyer-client-adapter-pack` without paying. The paid result returns `quoteValidationPolicy`, `environmentContract`, `nodeFetchClient`, `pythonHttpxOutline`, `mcpWrapperConfig`, `sameRequestRetryChecklist`, `receiptCapturePolicy`, and `failureStopConditions`.
- Buyer, agent wallet, MCP client, or seller whose quote did not become a settled paid response: run [examples/payment-failure-doctor/](examples/payment-failure-doctor/) to quote `https://gpt55.558686.xyz/v1/tools/x402-payment-failure-doctor` without paying. The paid result returns `paymentRecoveryPack`, `buyerSupportPacket`, `recoveryRunbook`, `repeatPurchaseContract`, `sameRequestRetryTemplate`, `officialClientRecipe`, `firstPaymentClientRecipe`, `facilitatorRecovery`, and `receiptEvidenceRequired`.
- Buyer wallet, MCP client, or Flowise node with Base USDC available but no `X-PAYMENT` header yet: run [examples/wallet-funding-readiness-doctor/](examples/wallet-funding-readiness-doctor/) to quote `https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor` without paying. The paid result returns `paymentHeaderReadiness`, `officialClientHandoff`, `sameRequestRetry`, `mcpGuardConfig`, `flowiseGuardConfig`, and a balance-to-payment-header `repeatPurchaseContract`.
- Buyer, wallet agent, MCP client, or seller that already has a paid response and needs proof before repeat spend or dispute: run [examples/receipt-dispute-pack/](examples/receipt-dispute-pack/) to quote `https://gpt55.558686.xyz/v1/tools/x402-receipt-dispute-pack` without paying. The paid result returns `readiness`, `evidenceScore`, `blockers`, `missingEvidence`, `auditRecord`, `disputePacket`, and `nextPaymentPolicy`.
- Buyer-owned agent, MCP client, or Flowise node that already has a paid JSON result and needs to know if it can execute or must repurchase: run [examples/receipt-bound-execution-gate/](examples/receipt-bound-execution-gate/) to quote `https://gpt55.558686.xyz/v1/tools/x402-receipt-bound-execution-gate` without paying. The paid result returns `receiptBinding`, `reuseDecision`, `mcpGateConfig`, `flowiseGateConfig`, `auditRecord`, and `nextPurchaseRequired`.
- x402 or paid MCP seller with an inconsistent directory grade, stale listing copy, metadata drift, or quote-heavy settle-light traffic: run [examples/directory-compliance-repair-pack/](examples/directory-compliance-repair-pack/) to quote `https://gpt55.558686.xyz/v1/tools/x402-directory-compliance-repair-pack` without paying. The paid result returns `status`, `complianceScore`, `repairActions`, `metadataPatch`, `checkoutSourceClassifier`, `sourceQualitySummary`, `trafficActionPlan`, `directorySubmissionCopy`, and `retestPlan`.
- Enterprise buyer, agent treasury, paid API seller, MCP marketplace operator, Flowise builder, procurement owner, compliance team, or conversion operator that needs premium executable policy output: start with the Premium Agent Commerce Tools section below. These high-value routes return JSON policy/config/evidence packs after a buyer-owned x402 payment and currently range from `$8.90` to `$49.90`.
- Wallet buyer evaluating `wallet-signing-safety-pack`: start with `https://gpt55.558686.xyz/x402/wallet-signing-safety-pack` or `https://go165.github.io/gpt55-x402-gateway/wallet-signing-safety-pack.html`, inspect `https://gpt55.558686.xyz/x402/wallet-signing-safety-pack.json`, then run `npm run wallet-checkout:contract` and the quote-only first-payment client before any private key or payment is involved.
- Agent, wallet, or MCP buyer trying to safely move from quote probes to a real first payment: start with the Agent Payment Safety Control Plane at `https://gpt55.558686.xyz/x402/agent-payment-safety-control-plane`, then run [examples/agent-payment-safety-control-plane/](examples/agent-payment-safety-control-plane/) to verify route, spend cap, `payTo`, network, and expected receipt fields without paying.
- Buyer agent that already received a paid tool result with `x402NextPurchase`: run [examples/x402-next-purchase-router/](examples/x402-next-purchase-router/) to select the next wallet-safety or MCP route, enforce the 0.02 USDC cap, and stop before payment.
- Buyer that needs the broader discovery and checkout map: use the Agent Payment Control Plane at `https://gpt55.558686.xyz/x402/agent-payment-control-plane`, then run [examples/agent-payment-control-plane/](examples/agent-payment-control-plane/) to inspect route selection and quote policy without paying.
- Agent buyer that needs a machine-readable payment allowlist before any real spend: run [examples/agent-payment-policy-manifest/](examples/agent-payment-policy-manifest/) to check live 402 quotes against route, budget, `payTo`, and network policy without signing or paying.
- Agent or MCP operator that needs to turn spend rules into executable guard config: use the Agent Payment Policy Compiler at `https://gpt55.558686.xyz/x402/agent-payment-policy-compiler`, then run [examples/agent-payment-policy-compiler/](examples/agent-payment-policy-compiler/) to quote the paid compiler without paying. The paid result returns `policyJson`, `mcpGuardConfig`, `flowiseGuardConfig`, and `x402PaymentChecklist`.
- Team, agent platform, or MCP operator that needs finance/security approval before enabling real x402 spend: use the Agent Payment Approval Pack at `https://gpt55.558686.xyz/x402/agent-payment-approval-pack`, then run [examples/agent-payment-approval-pack/](examples/agent-payment-approval-pack/) to quote `https://gpt55.558686.xyz/v1/tools/x402-agent-payment-approval-pack` without paying. The paid result returns `approvalPack`, `budgetApproval`, `securityReview`, `receiptEvidencePolicy`, `mcpApprovalGateConfig`, `flowiseApprovalGateConfig`, and `repeatApprovalContract`.
- Agent or MCP operator that already has a payment policy and needs a per-payment repeat-spend decision: use the Agent Spend Recurrence Guard at `https://gpt55.558686.xyz/x402/agent-spend-recurrence-guard`, then run [examples/agent-spend-recurrence-guard/](examples/agent-spend-recurrence-guard/) to quote the paid guard without paying. The paid result returns `decision`, `budgetStatus`, `spendLedgerEntry`, `mcpGuardConfig`, `flowiseGuardConfig`, and `runtimeGuardSnippet`.
- Wallet runtime, MCP client, Flowise node, or agent wallet that needs a final allow/manual_review/deny decision before money moves: use the Wallet Runtime Spend Guard at `https://gpt55.558686.xyz/x402/wallet-runtime-spend-guard`, then run [examples/wallet-runtime-spend-guard/](examples/wallet-runtime-spend-guard/) to quote `https://gpt55.558686.xyz/v1/paid/wallet-runtime-spend-guard` without paying.
- Content site, docs site, API publisher, or MCP service trying to monetize AI crawler/agent traffic: start with the AI Crawler Monetization Kit at `https://gpt55.558686.xyz/x402/ai-crawler-monetization-kit`, then run [examples/ai-crawler-monetization-kit/](examples/ai-crawler-monetization-kit/) to generate protected routes, x402 discovery copy, `robots.txt`, `llms.txt`, `edgeGatewayPolicy`, `mcpPaymentPolicy`, receipt evidence, conversion events, and a copy-paste deployment plan.
- Agent wallet, trading bot, MCP client, or Flowise node checking DeFi actions before money moves: start with the DeFi Agent Gateway at `https://gpt55.558686.xyz/x402/defi-agent-gateway`, then run [examples/defi-agent-gateway/](examples/defi-agent-gateway/) to quote MEV, slippage, bridge, approval, liquidation, LP, arbitrage, funding, and fresh-market routes without paying.
- Buyer unsure which x402 route to buy first: start with the First Purchase Router at `https://gpt55.558686.xyz/x402/first-purchase-router`, then run [examples/first-purchase-router/](examples/first-purchase-router/) to verify the live quote without paying.
- Agent or wallet buyer evaluating paid x402 endpoints: start with the Buyer Conversion Suite at `https://gpt55.558686.xyz/x402/buyer-conversion-suite`, then use [examples/buyer-conversion-suite/](examples/buyer-conversion-suite/) to choose the safest first paid URL without paying.
- Agent payment integrator: use the Agent Commerce Suite at `https://gpt55.558686.xyz/x402/agent-commerce-suite`, load the buyer payment policy at `https://gpt55.558686.xyz/x402/buyer-payment-policy-pack.json`, then use [examples/buyer-payment-policy-pack/](examples/buyer-payment-policy-pack/), [examples/agent-commerce-suite/](examples/agent-commerce-suite/), or [examples/agentcore-mcp-buyer-quickstart/](examples/agentcore-mcp-buyer-quickstart/) to decode the first live quote without paying. After paying the first decision endpoint, read `buyerAgentPaymentDecision`, `agentPolicyInputs`, and `receiptEvidenceRequiredAfterPayment` before any target payment.
- Agent/MCP buyer trying to move from quote to first payment: start with the Agent Payment Readiness Lab at `https://gpt55.558686.xyz/x402/agent-payment-readiness-lab`, then run [examples/agent-payment-readiness-lab/](examples/agent-payment-readiness-lab/) to quote first-purchase routes without paying.
- Wallet or agent buyer choosing the first safety purchase: start with `https://gpt55.558686.xyz/x402/wallet-prepay-first-purchase`, then run [examples/wallet-prepay-first-purchase/](examples/wallet-prepay-first-purchase/) to quote wallet/prepay routes without paying.
- Agent or MCP buyer ready for checkout: start with `https://gpt55.558686.xyz/x402/agent-checkout-kit`, then run [examples/x402-first-payment-client/](examples/x402-first-payment-client/) in quote-only mode for either `wallet-signing-safety-pack` or `mcp-integration-kit`.
- Buyer ready to move from quote to a real first payment: use [examples/x402-first-payment-client/](examples/x402-first-payment-client/) in quote-only mode first. Lowest-cost settlement canary is `ROUTE_ID=translate-canary MAX_USDC=0.001`; after that works, upgrade to `wallet-signing-safety-pack` with `MAX_USDC=0.02` or `mcp-integration-kit`.
- Buyer or agent that already paid and needs proof before trusting the result: use the x402 Receipt Verifier at `https://gpt55.558686.xyz/x402/receipt-verifier`, then run [examples/receipt-verifier/](examples/receipt-verifier/) to recompute `receiptHash`, `actionRef`, `payTo`, network, amount, route, and transaction evidence without signing or paying.
- Paying or signing with an agent wallet: start with `https://gpt55.558686.xyz/x402/wallet-signing-risk-kit`.
- Checking a paid x402 endpoint before spending USDC: start with `https://gpt55.558686.xyz/x402/prepay-trust-check`.
- Reviewing standing approvals before treasury actions: start with `https://gpt55.558686.xyz/x402/approval-risk-auditor`.
- Selling an x402 or paid MCP API: start with `https://gpt55.558686.xyz/x402/merchant-readiness`, quote `https://gpt55.558686.xyz/v1/paid/x402-seller-mini-check` for the lowest-friction $0.006 first paid check, then buy `https://gpt55.558686.xyz/v1/paid/x402-growth-plan` for the execution checklist or `https://gpt55.558686.xyz/v1/paid/x402-seller-intel` for the full bundle.
- x402 seller with quote traffic but weak paid conversion: start from the buyer jump page `https://sub2api.558686.xyz`, then inspect the product page at `https://gpt55.558686.xyz/x402/seller-price-ladder-optimizer` and run [examples/seller-price-ladder-optimizer/](examples/seller-price-ladder-optimizer/) to quote the deterministic `$4.90` seller pricing endpoint without paying. The paid result returns `routePriceLadder`, `abTestPlan`, `upgradePath`, `rollbackRules`, `copyPasteSnippet`, and `purchaseResultCard` without requiring an LLM.
- Directory or marketplace reviewer: use the GitHub Pages merchant-readiness brief at `https://go165.github.io/gpt55-x402-gateway/merchant-readiness.html` for copy-paste listing text and live quote steps.
## Paid Result Contract
After a real buyer-owned x402 payment, the high-intent paid routes return buyer-facing fields that make the result understandable without reading the whole JSON:
- `purchaseResultCard`: the shortest human-readable result card with `buyerOutcome`, `topResult`, `nextStep`, `repurchasePrompt`, recommended repeat route, and receipt evidence.
- `paidExperienceSummary`: a short human summary with `buyerOutcome`, `topResult`, `nextStep`, `repeatUseCase`, `repurchasePrompt`, and receipt evidence.
- `buyerActionChecklist`: a direct three-step action list with receipt headers, next paid route, and the repeat trigger for the next signing or payment decision.
- `repeatPurchaseContract`: the machine-readable rule for when the paid result is no longer reusable and the buyer should purchase the same check again.
- `x402NextPurchase`: a machine-readable repeat-purchase router with the next quote-only command, max spend, URL, network, payTo policy, and receipt verifier.
- `quoteToPaymentHandoff`: the short 402 response handoff that names `@x402/fetch`, `X-PAYMENT`, the same-request retry rule, and `X-PAYMENT-RESPONSE`.
Route-specific repeat paths are explicit: `x402-buyer-prepay-risk-score` repeats before paying any unfamiliar x402 URL, `x402-agent-spend-recurrence-guard` repeats before every repeated agent payment, `wallet-runtime-spend-guard` repeats before every wallet-runtime payment gate, budget burst, route change, payTo/network drift, or missing receipt event, `x402-seller-mini-check` repeats after seller copy/price/tag changes, `wallet-signing-safety-pack` repeats before each new signing or approval bundle, and `x402-mcp-integration-kit` repeats for each new buyer agent or MCP runtime.
## For Buyers Ready To Pay
Start quote-only. These commands do not use a private key, do not sign, and do not pay:
```bash
curl -fsSLO https://gpt55.558686.xyz/x402/first-payment-client.mjs
npm install @x402/fetch @x402/core @x402/evm viem
ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 node first-payment-client.mjs
npm run wallet-checkout:contract
ROUTE_ID=translate-canary MAX_USDC=0.001 node first-payment-client.mjs
ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 node first-payment-client.mjs
ROUTE_ID=mcp-integration-kit node first-payment-client.mjs
```
The wallet checkout contract lives at `https://gpt55.558686.xyz/x402/wallet-prepay-first-purchase.json` under `firstPurchaseCheckoutContract`. It names the exact paid URL, amount `18000`, network `eip155:8453`, `payTo`, payment gates, `livePaymentChecklist`, paid result fields, and post-payment guard examples.
For `wallet-signing-safety-pack`, the buyer-owned first-payment quickstart is:
```bash
git clone https://github.com/go165/gpt55-x402-gateway.git && cd gpt55-x402-gateway
npm install
npm run first-payment:root
ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 node first-payment-client.mjs
cat last-run.evidence.json
PAY_REAL_X402=1 ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 EVM_PRIVATE_KEY=0x... node first-payment-client.mjs
```
The repository root now includes `first-payment-client.mjs`, a thin wrapper around the maintained client in `examples/x402-first-payment-client/`. `npm run first-payment:root` proves the root command works in quote-only mode before any buyer tries a real payment.
The first-payment client starts quote-only. It should show `paymentSent: false`, the live `amountAtomic`, network, `payTo`, spend-cap checks, and `buyerPaymentHandoff` before the buyer opts into `PAY_REAL_X402=1`. Never send a private key, seed phrase, wallet password, exchange login, or custodial API key to the service.
The same client is also directly downloadable from the service at `https://gpt55.558686.xyz/x402/first-payment-client.mjs`, so buyers can run the first quote without cloning the full repository.
Only after the live quote matches amount, network, asset, and `payTo`, a buyer-owned wallet environment can opt in to a real x402 payment:
```bash
PAY_REAL_X402=1 ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 EVM_PRIVATE_KEY=0x... node first-payment-client.mjs
PAY_REAL_X402=1 ROUTE_ID=translate-canary MAX_USDC=0.001 EVM_PRIVATE_KEY=0x... node first-payment-client.mjs
PAY_REAL_X402=1 ROUTE_ID=mcp-integration-kit EVM_PRIVATE_KEY=0x... node first-payment-client.mjs
```
Expected paid result shapes:
- Wallet safety pack: [examples/wallet-signing-safety-pack/paid-result-shape.json](examples/wallet-signing-safety-pack/paid-result-shape.json)
- MCP integration kit: [examples/mcp-first-purchase-kit/paid-result-shape.json](examples/mcp-first-purchase-kit/paid-result-shape.json)
After a buyer-owned wallet payment, save `x-x402-receipt-id` and `x-x402-receipt-url`, then verify the receipt before trusting automated follow-up actions:
```bash
npm run receipt:verify -- --receipt-url https://gpt55.558686.xyz/x402/receipts/{receiptId}
```
## Public Endpoints
- Service: `https://gpt55.558686.xyz`
- Unified service hub: `https://gpt55.558686.xyz/x402/service`
- Unified service JSON: `https://gpt55.558686.xyz/x402/service.json`
- Project page: `https://gpt55.558686.xyz/projects/558686/`
- Tools catalog: `https://gpt55.558686.xyz/tools.json`
- APIs catalog: `https://gpt55.558686.xyz/apis.json`
- Directory submission draft: `https://gpt55.558686.xyz/directory-submission.json`
- MCP Streamable HTTP: `https://gpt55.558686.xyz/mcp`
- MCP SSE discovery: `https://gpt55.558686.xyz/mcp/sse`
- MCP config: `https://gpt55.558686.xyz/mcp/config`
- MCP server metadata: `https://gpt55.558686.xyz/server.json`
- Directory channel registry: [directory-channel-registry.json](directory-channel-registry.json)
- Directory channel health check: [examples/directory-channel-health/](examples/directory-channel-health/)
- Checkout drop-off summary: [examples/checkout-dropoff-summary/](examples/checkout-dropoff-summary/)
- Checkout source quality: [examples/checkout-source-quality/](examples/checkout-source-quality/)
- Checkout source quality Pages brief: `https://go165.github.io/gpt55-x402-gateway/checkout-source-quality.html`
- x402 discovery: `https://gpt55.558686.xyz/.well-known/x402`
- OpenAPI: `https://gpt55.558686.xyz/openapi.json`
- Pricing: `https://gpt55.558686.xyz/pricing.json`
- Buyer guide: `https://gpt55.558686.xyz/buyer-guide.json`
- llms.txt: `https://gpt55.558686.xyz/llms.txt`
- llms-full.txt: `https://gpt55.558686.xyz/llms-full.txt`
- Agent card: `https://gpt55.558686.xyz/.well-known/agent-card.json`
- AI catalog: `https://gpt55.558686.xyz/.well-known/ai-catalog.json`
- MCP server card: `https://gpt55.558686.xyz/.well-known/mcp/server-card.json`
- Channel submission pack: [docs/channel-submission-pack/](docs/channel-submission-pack/)
- MCP First Purchase Kit examples: [examples/mcp-first-purchase-kit/](examples/mcp-first-purchase-kit/)
- Agent Payment Launchpad examples: [examples/agent-payment-launchpad/](examples/agent-payment-launchpad/)
- Agent Payment Launchpad Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-launchpad.html`
- x402 MCP First Purchase Kit: `https://gpt55.558686.xyz/x402/mcp-first-purchase-kit`
- x402 MCP First Purchase Kit JSON: `https://gpt55.558686.xyz/x402/mcp-first-purchase-kit.json`
- x402 MCP First Purchase Kit examples: [examples/mcp-first-purchase-kit/](examples/mcp-first-purchase-kit/)
- x402 MCP First Purchase Kit Pages brief: `https://go165.github.io/gpt55-x402-gateway/mcp-first-purchase.html`
- x402 Translate First Purchase: `https://gpt55.558686.xyz/x402/translate-first-purchase`
- x402 Translate First Purchase JSON: `https://gpt55.558686.xyz/x402/translate-first-purchase.json`
- x402 Translate First Purchase examples: [examples/translate-first-purchase/](examples/translate-first-purchase/)
- x402 Translate First Purchase Pages brief: `https://go165.github.io/gpt55-x402-gateway/translate-first-purchase.html`
- Payment Evidence Center: `https://gpt55.558686.xyz/x402/payment-evidence-center`
- Payment Evidence Center JSON: `https://gpt55.558686.xyz/x402/payment-evidence-center.json`
- Payment Evidence Center examples: [examples/payment-evidence-center/](examples/payment-evidence-center/)
- Payment Evidence Center Pages brief: `https://go165.github.io/gpt55-x402-gateway/payment-evidence-center.html`
- x402 Receipt Verifier: `https://gpt55.558686.xyz/x402/receipt-verifier`
- x402 Receipt Verifier JSON: `https://gpt55.558686.xyz/x402/receipt-verifier.json`
- x402 Receipt Verifier examples: [examples/receipt-verifier/](examples/receipt-verifier/)
- x402 Receipt Verifier Pages brief: `https://go165.github.io/gpt55-x402-gateway/receipt-verifier.html`
- Agent Payment Control Plane: `https://gpt55.558686.xyz/x402/agent-payment-control-plane`
- Agent Payment Control Plane JSON: `https://gpt55.558686.xyz/x402/agent-payment-control-plane.json`
- Agent Payment Control Plane examples: [examples/agent-payment-control-plane/](examples/agent-payment-control-plane/)
- Agent Payment Safety Control Plane: `https://gpt55.558686.xyz/x402/agent-payment-safety-control-plane`
- Agent Payment Safety Control Plane JSON: `https://gpt55.558686.xyz/x402/agent-payment-safety-control-plane.json`
- Agent Payment Safety Control Plane examples: [examples/agent-payment-safety-control-plane/](examples/agent-payment-safety-control-plane/)
- Agent Payment Safety Control Plane Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-safety-control-plane.html`
- Agent Payment Risk Gate: `https://gpt55.558686.xyz/x402/agent-payment-risk-gate`
- Agent Payment Risk Gate JSON: `https://gpt55.558686.xyz/x402/agent-payment-risk-gate.json`
- Agent Payment Risk Gate examples: [examples/agent-payment-risk-gate/](examples/agent-payment-risk-gate/)
- Agent Payment Risk Gate Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-risk-gate.html`
- x402 Client Compatibility Adapter: `https://gpt55.558686.xyz/x402/client-compatibility-adapter`
- x402 Client Compatibility Adapter JSON: `https://gpt55.558686.xyz/x402/client-compatibility-adapter.json`
- x402 Client Compatibility Adapter paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-client-compatibility-adapter`
- x402 Client Compatibility Adapter examples: [examples/client-compatibility-adapter/](examples/client-compatibility-adapter/)
- x402 Client Compatibility Adapter Pages brief: `https://go165.github.io/gpt55-x402-gateway/client-compatibility-adapter.html`
- x402 Buyer Client Adapter Pack: `https://gpt55.558686.xyz/x402/buyer-client-adapter-pack`
- x402 Buyer Client Adapter Pack JSON: `https://gpt55.558686.xyz/x402/buyer-client-adapter-pack.json`
- x402 Buyer Client Adapter Pack paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-buyer-client-adapter-pack`
- x402 Buyer Client Adapter Pack examples: [examples/buyer-client-adapter-pack/](examples/buyer-client-adapter-pack/)
- x402 Buyer Client Adapter Pack Pages brief: `https://go165.github.io/gpt55-x402-gateway/buyer-client-adapter-pack.html`
- x402 Payment Failure Doctor paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-payment-failure-doctor`
- x402 Payment Failure Doctor examples: [examples/payment-failure-doctor/](examples/payment-failure-doctor/)
- x402 Payment Failure Doctor Pages brief: `https://go165.github.io/gpt55-x402-gateway/payment-failure-doctor.html`
- x402 Wallet Funding Readiness Doctor: `https://gpt55.558686.xyz/x402/wallet-funding-readiness-doctor`
- x402 Wallet Funding Readiness Doctor JSON: `https://gpt55.558686.xyz/x402/wallet-funding-readiness-doctor.json`
- x402 Wallet Funding Readiness Doctor paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor`
- x402 Wallet Funding Readiness Doctor examples: [examples/wallet-funding-readiness-doctor/](examples/wallet-funding-readiness-doctor/)
- x402 Wallet Funding Readiness Doctor Pages brief: `https://go165.github.io/gpt55-x402-gateway/wallet-funding-readiness-doctor.html`
- x402 Receipt Dispute Pack: `https://gpt55.558686.xyz/x402/receipt-dispute-pack`
- x402 Receipt Dispute Pack JSON: `https://gpt55.558686.xyz/x402/receipt-dispute-pack.json`
- x402 Receipt Dispute Pack paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-receipt-dispute-pack`
- x402 Receipt Dispute Pack examples: [examples/receipt-dispute-pack/](examples/receipt-dispute-pack/)
- x402 Receipt Dispute Pack Pages brief: `https://go165.github.io/gpt55-x402-gateway/receipt-dispute-pack.html`
- x402 Receipt-Bound Execution Gate: `https://gpt55.558686.xyz/x402/receipt-bound-execution-gate`
- x402 Receipt-Bound Execution Gate JSON: `https://gpt55.558686.xyz/x402/receipt-bound-execution-gate.json`
- x402 Receipt-Bound Execution Gate paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-receipt-bound-execution-gate`
- x402 Receipt-Bound Execution Gate examples: [examples/receipt-bound-execution-gate/](examples/receipt-bound-execution-gate/)
- x402 Receipt-Bound Execution Gate Pages brief: `https://go165.github.io/gpt55-x402-gateway/receipt-bound-execution-gate.html`
- x402 Directory Compliance Repair Pack: `https://gpt55.558686.xyz/x402/directory-compliance-repair-pack`
- x402 Directory Compliance Repair Pack JSON: `https://gpt55.558686.xyz/x402/directory-compliance-repair-pack.json`
- x402 Directory Compliance Repair Pack paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-directory-compliance-repair-pack`
- x402 Directory Compliance Repair Pack examples: [examples/directory-compliance-repair-pack/](examples/directory-compliance-repair-pack/)
- x402 Directory Compliance Repair Pack Pages brief: `https://go165.github.io/gpt55-x402-gateway/directory-compliance-repair-pack.html`
- x402 Next Purchase Router examples: [examples/x402-next-purchase-router/](examples/x402-next-purchase-router/)
- x402 Next Purchase Router Pages brief: `https://go165.github.io/gpt55-x402-gateway/x402-next-purchase-router.html`
- Agent Payment Policy Manifest: [examples/agent-payment-policy-manifest/agent-payment-policy.json](examples/agent-payment-policy-manifest/agent-payment-policy.json)
- Agent Payment Policy checker: [examples/agent-payment-policy-manifest/](examples/agent-payment-policy-manifest/)
- Agent Payment Policy Manifest Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-policy-manifest.html`
- Agent Payment Policy Compiler: `https://gpt55.558686.xyz/x402/agent-payment-policy-compiler`
- Agent Payment Policy Compiler JSON: `https://gpt55.558686.xyz/x402/agent-payment-policy-compiler.json`
- Agent Payment Policy Compiler paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-agent-payment-policy-compiler`
- Agent Payment Policy Compiler examples: [examples/agent-payment-policy-compiler/](examples/agent-payment-policy-compiler/)
- Agent Payment Policy Compiler Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-policy-compiler.html`
- Agent Payment Approval Pack: `https://gpt55.558686.xyz/x402/agent-payment-approval-pack`
- Agent Payment Approval Pack JSON: `https://gpt55.558686.xyz/x402/agent-payment-approval-pack.json`
- Agent Payment Approval Pack paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-agent-payment-approval-pack`
- Agent Payment Approval Pack examples: [examples/agent-payment-approval-pack/](examples/agent-payment-approval-pack/)
- Agent Payment Approval Pack Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-approval-pack.html`
- Agent Spend Recurrence Guard: `https://gpt55.558686.xyz/x402/agent-spend-recurrence-guard`
- Agent Spend Recurrence Guard JSON: `https://gpt55.558686.xyz/x402/agent-spend-recurrence-guard.json`
- Agent Spend Recurrence Guard paid endpoint: `https://gpt55.558686.xyz/v1/tools/x402-agent-spend-recurrence-guard`
- Agent Spend Recurrence Guard examples: [examples/agent-spend-recurrence-guard/](examples/agent-spend-recurrence-guard/)
- Agent Spend Recurrence Guard Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-spend-recurrence-guard.html`
- Wallet Runtime Spend Guard: `https://gpt55.558686.xyz/x402/wallet-runtime-spend-guard`
- Wallet Runtime Spend Guard JSON: `https://gpt55.558686.xyz/x402/wallet-runtime-spend-guard.json`
- Wallet Runtime Spend Guard paid endpoint: `https://gpt55.558686.xyz/v1/paid/wallet-runtime-spend-guard`
- Wallet Runtime Spend Guard examples: [examples/wallet-runtime-spend-guard/](examples/wallet-runtime-spend-guard/)
- Wallet Runtime Spend Guard Pages brief: `https://go165.github.io/gpt55-x402-gateway/wallet-runtime-spend-guard.html`
- Agent Payment Control Plane Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-control-plane.html`
- AI Crawler Monetization Kit: `https://gpt55.558686.xyz/x402/ai-crawler-monetization-kit`
- AI Crawler Monetization Kit JSON: `https://gpt55.558686.xyz/x402/ai-crawler-monetization-kit.json`
- AI Crawler Monetization Kit examples: [examples/ai-crawler-monetization-kit/](examples/ai-crawler-monetization-kit/)
- AI Crawler Monetization Kit Pages brief: `https://go165.github.io/gpt55-x402-gateway/ai-crawler-monetization-kit.html`
- DeFi Agent Gateway: `https://gpt55.558686.xyz/x402/defi-agent-gateway`
- DeFi Agent Gateway JSON: `https://gpt55.558686.xyz/x402/defi-agent-gateway.json`
- DeFi Agent Gateway examples: [examples/defi-agent-gateway/](examples/defi-agent-gateway/)
- DeFi Agent Gateway Pages brief: `https://go165.github.io/gpt55-x402-gateway/defi-agent-gateway.html`
- First Purchase Router: `https://gpt55.558686.xyz/x402/first-purchase-router`
- First Purchase Router JSON: `https://gpt55.558686.xyz/x402/first-purchase-router.json`
- First Purchase Router examples: [examples/first-purchase-router/](examples/first-purchase-router/)
- First Purchase Router Pages brief: `https://go165.github.io/gpt55-x402-gateway/first-purchase-router.html`
- Buyer Conversion Suite: `https://gpt55.558686.xyz/x402/buyer-conversion-suite`
- Buyer Conversion Suite JSON: `https://gpt55.558686.xyz/x402/buyer-conversion-suite.json`
- Buyer Conversion Suite examples: [examples/buyer-conversion-suite/](examples/buyer-conversion-suite/)
- MCP First Purchase Kit: `https://gpt55.558686.xyz/x402/mcp-first-purchase-kit`
- MCP First Purchase Kit JSON: `https://gpt55.558686.xyz/x402/mcp-first-purchase-kit.json`
- MCP First Purchase examples: [examples/mcp-first-purchase-kit/](examples/mcp-first-purchase-kit/)
- MCP paid result contract fields: `mcpRuntimeInstallPlan`, `buyerMcpExecutionContract`, `receiptGate`
- Agent Payment Readiness Lab: `https://gpt55.558686.xyz/x402/agent-payment-readiness-lab`
- Agent Payment Readiness Lab JSON: `https://gpt55.558686.xyz/x402/agent-payment-readiness-lab.json`
- Agent Payment Readiness examples: [examples/agent-payment-readiness-lab/](examples/agent-payment-readiness-lab/)
- Agent Payment Readiness Pages brief: `https://go165.github.io/gpt55-x402-gateway/agent-payment-readiness.html`
- Wallet and Prepay First Purchase Center: `https://gpt55.558686.xyz/x402/wallet-prepay-first-purchase`
- Wallet and Prepay First Purchase JSON: `https://gpt55.558686.xyz/x402/wallet-prepay-first-purchase.json`
- Wallet and Prepay First Purchase examples: [examples/wallet-prepay-first-purchase/](examples/wallet-prepay-first-purchase/)
- Wallet and Prepay First Purchase Pages brief: `https://go165.github.io/gpt55-x402-gateway/wallet-prepay-first-purchase.html`
- Wallet Signing Safety Pack: `https://gpt55.558686.xyz/x402/wallet-signing-safety-pack`
- Wallet Signing Safety Pack JSON: `https://gpt55.558686.xyz/x402/wallet-signing-safety-pack.json`
- Wallet Signing Safety Pack Pages brief: `https://go165.github.io/gpt55-x402-gateway/wallet-signing-safety-pack.html`
- Agent Checkout Kit: `https://gpt55.558686.xyz/x402/agent-checkout-kit`
- Agent Checkout Kit JSON: `https://gpt55.558686.xyz/x402/agent-checkout-kit.json`
- x402 First Payment Client: [examples/x402-first-payment-client/](examples/x402-first-payment-client/)
- x402 First Payment Client Pages brief: `https://go165.github.io/gpt55-x402-gateway/x402-first-payment-client.html`
- Agent Commerce Suite: `https://gpt55.558686.xyz/x402/agent-commerce-suite`
- Agent Commerce Suite JSON: `https://gpt55.558686.xyz/x402/agent-commerce-suite.json`
- Buyer payment policy pack: `https://gpt55.558686.xyz/x402/buyer-payment-policy-pack`
- Buyer payment policy JSON: `https://gpt55.558686.xyz/x402/buyer-payment-policy-pack.json`
- Buyer payment policy example: [examples/buyer-payment-policy-pack/](examples/buyer-payment-policy-pack/)
- Buyer payment paid result field: `buyerAgentPaymentDecision` with `agentPolicyInputs` and `receiptEvidenceRequiredAfterPayment`
- Agent Commerce Suite examples: [examples/agent-commerce-suite/](examples/agent-commerce-suite/)
- AgentCore/MCP buyer quickstart: [examples/agentcore-mcp-buyer-quickstart/](examples/agentcore-mcp-buyer-quickstart/)
- Buyer safety guide: [`BUYER_SAFETY.md`](BUYER_SAFETY.md)
- Manual submission pack: [`SUBMISSION_PACK.md`](SUBMISSION_PACK.md)
- Wallet signing risk kit: `https://gpt55.558686.xyz/x402/wallet-signing-risk-kit`
- GitHub examples: [examples/wallet-signing-risk-kit/](examples/wallet-signing-risk-kit/)
- GitHub release: https://github.com/go165/gpt55-x402-gateway/releases/tag/v2026.06.18-wallet-safety-router
- GitHub Pages docs: https://go165.github.io/gpt55-x402-gateway/
- GitHub Pages IndexNow key: https://go165.github.io/gpt55-x402-gateway/2a90689e3e6f351286f9d32ed4fe8f1dea4c62904411609685959e7d995a4753.txt
- Wallet signing safety example pack: `https://gpt55.558686.xyz/x402/wallet-signing-risk-kit/example-pack.json`
- MCP wallet safety router: `https://gpt55.558686.xyz/x402/wallet-signing-risk-kit/mcp-wallet-safety-router.ts`
- x402 prepay trust check: `https://gpt55.558686.xyz/x402/prepay-trust-check`
- Approval risk auditor: `https://gpt55.558686.xyz/x402/approval-risk-auditor`
- EIP-712 signing risk decoder: `https://gpt55.558686.xyz/x402/eip712-signature-risk-decoder`
- EVM transaction risk decoder: `https://gpt55.558686.xyz/x402/evm-transaction-risk-decoder`
- Merchant readiness: `https://gpt55.558686.xyz/x402/merchant-readiness`
- Seller mini-check: `https://gpt55.558686.xyz/v1/paid/x402-seller-mini-check`
- Seller mini-check example pack: [examples/seller-mini-check/](examples/seller-mini-check/)
- Seller intelligence: `https://gpt55.558686.xyz/v1/paid/x402-seller-intel`
- Seller action plan: `https://gpt55.558686.xyz/v1/paid/x402-growth-plan`
- Pages merchant-readiness brief: `https://go165.github.io/gpt55-x402-gateway/merchant-readiness.html`
## Premium Agent Commerce Tools
These routes are built for buyers who need an immediately usable policy, config, ledger, dossier, or evidence artifact, not a generic explanation page. Always fetch the live HTTP `402` quote first and verify amount, network `eip155:8453`, Base USDC, and `payTo` before a buyer-owned wallet pays.
| Tool | Paid endpoint | Price | Pages brief | Paid output focus |
| --- | --- | ---: | --- | --- |
| x402 Agent Treasury Rebalancing Policy | `https://gpt55.558686.xyz/v1/paid/x402-agent-treasury-rebalancing-policy` | `$12.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-treasury-rebalancing-policy.html` | treasury policy, rebalancing guardrails, signer approval gates, receipt evidence |
| x402 Paid API Contract Test Suite | `https://gpt55.558686.xyz/v1/paid/x402-paid-api-contract-test-suite` | `$11.90` | `https://go165.github.io/gpt55-x402-gateway/x402-paid-api-contract-test-suite.html` | paid API contract tests, quote assertions, settlement checks, CI gates |
| x402 MCP Tool Revenue Share Ledger | `https://gpt55.558686.xyz/v1/paid/x402-mcp-tool-revenue-share-ledger` | `$10.90` | `https://go165.github.io/gpt55-x402-gateway/x402-mcp-tool-revenue-share-ledger.html` | partner ledger schema, revenue share rules, payout audit trail |
| x402 Agent Wallet Key Rotation Drill | `https://gpt55.558686.xyz/v1/paid/x402-agent-wallet-key-rotation-drill` | `$8.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-wallet-key-rotation-drill.html` | wallet rotation runbook, staged cutover gates, rollback evidence |
| x402 Enterprise Buyer Onboarding Dossier | `https://gpt55.558686.xyz/v1/paid/x402-enterprise-buyer-onboarding-dossier` | `$12.90` | `https://go165.github.io/gpt55-x402-gateway/x402-enterprise-buyer-onboarding-dossier.html` | procurement dossier, security answers, payment policy, integration checklist |
| x402 Model Arbitrage Router Policy | `https://gpt55.558686.xyz/v1/paid/x402-model-arbitrage-router-policy` | `$9.90` | `https://go165.github.io/gpt55-x402-gateway/x402-model-arbitrage-router-policy.html` | model routing policy, cost/quality gates, fallback controls |
| x402 Settlement Dispute Evidence Lockbox | `https://gpt55.558686.xyz/v1/paid/x402-settlement-dispute-evidence-lockbox` | `$8.90` | `https://go165.github.io/gpt55-x402-gateway/x402-settlement-dispute-evidence-lockbox.html` | receipt lockbox, dispute packet, immutable evidence checklist |
| x402 Agent Market Data Procurement Firewall | `https://gpt55.558686.xyz/v1/paid/x402-agent-market-data-procurement-firewall` | `$13.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-market-data-procurement-firewall.html` | data procurement firewall, vendor risk gates, spend policy |
| x402 Buyer Payment Client Implementation Sprint | `https://gpt55.558686.xyz/v1/paid/x402-buyer-payment-client-implementation-sprint` | `$14.90` | `https://go165.github.io/gpt55-x402-gateway/x402-buyer-payment-client-implementation-sprint.html` | implementation plan, same-request retry client, receipt capture checklist |
| x402 Flowise Payment Node Blueprint | `https://gpt55.558686.xyz/v1/paid/x402-flowise-payment-node-blueprint` | `$16.90` | `https://go165.github.io/gpt55-x402-gateway/x402-flowise-payment-node-blueprint.html` | Flowise node spec, credential boundary policy, test harness plan |
| x402 MCP Enterprise Rollout Pack | `https://gpt55.558686.xyz/v1/paid/x402-mcp-enterprise-rollout-pack` | `$18.90` | `https://go165.github.io/gpt55-x402-gateway/x402-mcp-enterprise-rollout-pack.html` | rollout architecture, client config bundle, approval runbook |
| x402 Payment Tax Invoice Reconciliation Kit | `https://gpt55.558686.xyz/v1/paid/x402-payment-tax-invoice-reconciliation-kit` | `$17.90` | `https://go165.github.io/gpt55-x402-gateway/x402-payment-tax-invoice-reconciliation-kit.html` | invoice ledger schema, tax evidence packet, reconciliation workflow |
| x402 SOC2 Payment Control Evidence Pack | `https://gpt55.558686.xyz/v1/paid/x402-soc2-payment-control-evidence-pack` | `$19.90` | `https://go165.github.io/gpt55-x402-gateway/x402-soc2-payment-control-evidence-pack.html` | control evidence matrix, audit sampling plan, exception register |
| x402 Private Gateway Deployment Plan | `https://gpt55.558686.xyz/v1/paid/x402-private-gateway-deployment-plan` | `$24.90` | `https://go165.github.io/gpt55-x402-gateway/x402-private-gateway-deployment-plan.html` | deployment architecture, secret boundary map, cutover checklist |
| x402 Agent Procurement RFP Response Pack | `https://gpt55.558686.xyz/v1/paid/x402-agent-procurement-rfp-response-pack` | `$21.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-procurement-rfp-response-pack.html` | RFP response draft, security attachment, pricing attachment |
| x402 Conversion Forensics War Room | `https://gpt55.558686.xyz/v1/paid/x402-conversion-forensics-war-room` | `$15.90` | `https://go165.github.io/gpt55-x402-gateway/x402-conversion-forensics-war-room.html` | dropoff diagnosis, experiment backlog, buyer activation patch |
| x402 Agent Credit Line Underwriting Pack | `https://gpt55.558686.xyz/v1/paid/x402-agent-credit-line-underwriting-pack` | `$29.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-credit-line-underwriting-pack.html` | creditPolicyMatrix, walletFundingThresholds, approvalEvidencePacket |
| x402 Seller Price Ladder Optimizer | `https://gpt55.558686.xyz/v1/paid/x402-seller-price-ladder-optimizer` | `$4.90` | `https://gpt55.558686.xyz/x402/seller-price-ladder-optimizer` | routePriceLadder, abTestPlan, upgradePath, rollbackRules |
| x402 Payment Retry SLO Autopilot | `https://gpt55.558686.xyz/v1/paid/x402-payment-retry-slo-autopilot` | `$26.90` | `https://go165.github.io/gpt55-x402-gateway/x402-payment-retry-slo-autopilot.html` | retryStateMachine, sloBudgetPolicy, failureEscalationRules |
| x402 MCP Tenant Entitlement Isolation Pack | `https://gpt55.558686.xyz/v1/paid/x402-mcp-tenant-entitlement-isolation-pack` | `$31.90` | `https://go165.github.io/gpt55-x402-gateway/x402-mcp-tenant-entitlement-isolation-pack.html` | tenantIsolationPolicy, entitlementNamespaceMap, crossTenantLeakTests |
| x402 Data Room Receipt Redaction Pack | `https://gpt55.558686.xyz/v1/paid/x402-data-room-receipt-redaction-pack` | `$27.90` | `https://go165.github.io/gpt55-x402-gateway/x402-data-room-receipt-redaction-pack.html` | redactionPolicy, shareableEvidenceBundle, secretBoundaryChecklist |
| x402 Usage Quota Billing Reconciliation Agent | `https://gpt55.558686.xyz/v1/paid/x402-usage-quota-billing-reconciliation-agent` | `$28.90` | `https://go165.github.io/gpt55-x402-gateway/x402-usage-quota-billing-reconciliation-agent.html` | quotaLedgerSchema, overageDecisionRules, billingReconciliationRows |
| x402 Refund Dispute Resolution Playbook | `https://gpt55.558686.xyz/v1/paid/x402-refund-dispute-resolution-playbook` | `$25.90` | `https://go165.github.io/gpt55-x402-gateway/x402-refund-dispute-resolution-playbook.html` | refundEligibilityMatrix, disputeTimeline, supportResponseTemplates |
| x402 Model Procurement Benchmark Pack | `https://gpt55.558686.xyz/v1/paid/x402-model-procurement-benchmark-pack` | `$32.90` | `https://go165.github.io/gpt55-x402-gateway/x402-model-procurement-benchmark-pack.html` | modelVendorScorecard, procurementBenchmarkMatrix, routeAwardPolicy |
| x402 Agent Runbook Compliance Attestation Pack | `https://gpt55.558686.xyz/v1/paid/x402-agent-runbook-compliance-attestation-pack` | `$34.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-runbook-compliance-attestation-pack.html` | attestationChecklist, controlOwnerSignoffPacket, runbookEvidenceMap |
| x402 Agent Data Leak Containment Plan | `https://gpt55.558686.xyz/v1/paid/x402-agent-data-leak-containment-plan` | `$39.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-data-leak-containment-plan.html` | piiLeakTriageMatrix, redactionPatchSet, incidentEvidenceLockbox |
| x402 Agent Approval Workflow Compiler | `https://gpt55.558686.xyz/v1/paid/x402-agent-approval-workflow-compiler` | `$37.90` | `https://go165.github.io/gpt55-x402-gateway/x402-agent-approval-workflow-compiler.html` | approvalPolicyJson, humanReviewQueueSchema, mcpApprovalMiddleware |
| x402 Model SLA Breach Claims Pack | `https://gpt55.558686.xyz/v1/paid/x402-model-sla-breach-claims-pack` | `$42.90` | `https://go165.github.io/gpt55-x402-gateway/x402-model-sla-breach-claims-pack.html` | slaEvidenceMatrix, claimPacket, serviceCreditCalculator |
| x402 MCP Asset Inventory Risk Register | `https://gpt55.558686.xyz/v1/paid/x402-mcp-asset-inventory-risk-register` | `$35.90` | `https://go165.github.io/gpt55-x402-gateway/x402-mcp-asset-inventory-risk-register.html` | toolInventorySchema, riskRegisterRows, receiptScopeCatalog |
| x402 Cross-Chain Payment Failover Playbook | `https://gpt55.558686.xyz/v1/paid/x402-cross-chain-payment-failover-playbook` | `$44.90` | `https://go165.github.io/gpt55-x402-gateway/x402-cross-chain-payment-failover-playbook.html` | chainFailoverMatrix, liquidityRunwayPlan, facilitatorFallbackConfig |
| x402 Enterprise Security Questionnaire Autofill | `https://gpt55.558686.xyz/v1/paid/x402-enterprise-security-questionnaire-autofill` | `$49.90` | `https://go165.github.io/gpt55-x402-gateway/x402-enterprise-security-questionnaire-autofill.html` | questionnaireAnswers, evidenceAttachmentIndex, controlMapping |
| x402 Customer Support Refund Triage Agent | `https://gpt55.558686.xyz/v1/paid/x402-customer-support-refund-triage-agent` | `$36.90` | `https://go165.github.io/gpt55-x402-gateway/x402-customer-support-refund-triage-agent.html` | refundTriageDecision, supportCaseTimeline, evidenceRequestEmail |
| x402 Seller Revenue Leakage Forensics Pack | `https://gpt55.558686.xyz/v1/paid/x402-seller-revenue-leakage-forensics-pack` | `$45.90` | `https://go165.github.io/gpt55-x402-gateway/x402-seller-revenue-leakage-forensics-pack.html` | leakageRootCauseMap, routePatchQueue, settlementRecoveryForecast |
## Market Positioning
- Compact GPT-5.5 entry request: `$0.0001`, or 10,000 compact requests per `$1`.
- Long GPT-5.5 request: `$0.002134`, up to 4096 output tokens.
- True max-output GPT-5.5 request: `$0.066667`, up to 128000 output tokens.
- Utility tools: from `$0.0001`.
- Wallet and payment safety tools: paid deterministic EIP-712, EVM transaction, approval-risk, and x402 prepay trust checks for agents and wallets that need pre-signing or pre-payment review.
- Agent payment control plane: a quote-to-settle control pack for agent wallets that need route selection, spend caps, `payTo` verification, wallet signing safety, MCP integration, and receipt evidence before a real x402 payment.
- AI crawler monetization kit: a deterministic pay-per-crawl packaging tool for content sites, documentation sites, API publishers, and MCP services that want free discovery plus paid premium routes for AI crawlers and buyer agents.
- DeFi agent gateway: a repeat-use risk-check entry for agent wallets and trading bots before swaps, bridges, approvals, liquidations, LP moves, arbitrage attempts, perps funding checks, fresh-market scans, and MEV-sensitive transactions.
- Wallet signing safety router: public copy-paste JSON, Markdown, and TypeScript assets route buyers to the right paid safety check before x402 payment, EVM calldata signing, EIP-712 typed-data signing, or approval review.
- x402/MCP/Bazaar integration kits: paid deterministic endpoints for buyers and sellers that need copy-paste-ready integration payloads.
- Premium agent commerce tools: high-value buyer-owned packs from `$8.90-$49.90` for treasury rebalancing, paid API contract testing, MCP revenue share ledgers, wallet key rotation, enterprise buyer onboarding, model arbitrage routing, settlement dispute evidence, market data procurement controls, buyer payment client implementation, Flowise payment nodes, MCP enterprise rollout, finance reconciliation, SOC2 evidence, private gateway deployment, procurement RFP response, conversion forensics, data-leak containment, approval workflow compilation, SLA breach claims, MCP asset inventory, cross-chain payment failover, enterprise questionnaire autofill, refund triage, and seller revenue leakage forensics.
- Merchant readiness and seller intelligence: paid deterministic reports for x402 sellers that need buyer-ready API metadata, pricing, directory visibility, marketplace SEO, and paid MCP listing audits. Start with the $0.006 seller mini-check, then upgrade to the $0.019 growth plan or $0.029 seller-intelligence bundle.
- Public x402 API listings commonly use per-call pricing around `$0.001-$0.01`; lead with the `$0.0001` compact endpoint for trials, then route larger buyers to `/v1/chat/completions/long` and `/v1/chat/completions/max`.
- Gross revenue per 1M output tokens is about `$0.521` across the proportional chat tiers.
- Public production quotes advertise exact and upto x402 on supported paid routes; `/v1/x402-ping` remains exact-only for lightweight proof checks. Fetch the endpoint without payment and use the returned `payment-required` header as the live price before paying.
Live quotes from `https://gpt55.558686.xyz/pricing.json` and unauthenticated HTTP `402` responses are authoritative. Directory pages can lag behind live x402 quote metadata.
## Live Quote and Chain Verification
- Always fetch the target endpoint without a payment header first. The live HTTP `402` `payment-required` header is the authoritative quote for amount, network, asset, and `payTo`.
- Settlement address: `0x1f0130669ca6fd02e025a984cc038f139df19a2f` on Base USDC.
- Chain verification: check Base USDC `Transfer` events to that address on a Base explorer or RPC before treating a payment as settled.
- Status endpoint: `https://gpt55.558686.xyz/x402/status`. If local log retention has gaps, prefer live `402` quotes and chain receipts over cached status summaries.
## Tool Surface
The service exposes 32 MCP tools that match the current split main-gateway `server.json`. Tool calls through the MCP facade return the direct endpoint, pricing, x402 discovery links, and example payload. Paid execution happens on the HTTP endpoint with x402 Base USDC or a private Bearer key; the MCP facade does not bypass payment.
Core endpoints include:
- `POST /v1/chat/completions`
- `POST /v1/chat/completions/long`
- `POST /v1/chat/completions/max`
- `GET /v1/paid/chat-cdp`
- `POST /v1/tools/summarize`
- `POST /v1/tools/translate`
- `POST /v1/tools/rewrite`
- `POST /v1/tools/answer`
- `POST /v1/tools/code-review`
- `POST /v1/tools/extract-json`
- `POST /v1/tools/x402-mcp-integration-kit`
- `POST /v1/tools/x402-agentcore-integration-kit`
- `GET /v1/tools/x402-prepay-trust-check`
- `GET /v1/tools/x402-buyer-prepay-risk-score`
- `GET /v1/paid/evm-transaction-risk-decoder`
- `GET /v1/paid/eip712-signature-risk-decoder`
- `POST /approval-risk-auditor/entrypoints/audit_approvals/invoke`
- `GET /v1/paid/x402-seller-mini-check`
- `GET /v1/paid/x402-seller-intel`
- `GET /v1/paid/x402-growth-plan`
- `POST /v1/paid/x402-agent-treasury-rebalancing-policy`
- `POST /v1/paid/x402-paid-api-contract-test-suite`
- `POST /v1/paid/x402-mcp-tool-revenue-share-ledger`
- `POST /v1/paid/x402-agent-wallet-key-rotation-drill`
- `POST /v1/paid/x402-enterprise-buyer-onboarding-dossier`
- `POST /v1/paid/x402-model-arbitrage-router-policy`
- `POST /v1/paid/x402-settlement-dispute-evidence-lockbox`
- `POST /v1/paid/x402-agent-market-data-procurement-firewall`
- `POST /v1/paid/x402-buyer-payment-client-implementation-sprint`
- `POST /v1/paid/x402-flowise-payment-node-blueprint`
- `POST /v1/paid/x402-mcp-enterprise-rollout-pack`
- `POST /v1/paid/x402-payment-tax-invoice-reconciliation-kit`
- `POST /v1/paid/x402-soc2-payment-control-evidence-pack`
- `POST /v1/paid/x402-private-gateway-deployment-plan`
- `POST /v1/paid/x402-agent-procurement-rfp-response-pack`
- `POST /v1/paid/x402-conversion-forensics-war-room`
- deterministic utility endpoints for URL metadata, URL text, links, HTTP status, JSON validation, hashing, Base64, timestamps, regex, UUID, and text stats.
MCP first-purchase example: [examples/mcp-first-purchase-kit/](examples/mcp-first-purchase-kit/) shows how to quote the MCP integration endpoint, check amount/network/payTo, and stop before payment. This is the preferred upgrade after translate succeeds for buyers whose next job is MCP setup.
First purchase router example: [examples/first-purchase-router/](examples/first-purchase-router/) shows how to choose between MCP integration, buyer prepay risk, wallet signing risk, and seller mini-check routes, then verify live amount/network/payTo before any payment.
Wallet/prepay first-purchase example: [examples/wallet-prepay-first-purchase/](examples/wallet-prepay-first-purchase/) shows how to quote buyer prepay risk, EIP-712 signing risk, EVM transaction risk, and approval-risk routes without paying, signing, registering, or using a private key.
x402 first-payment client: [examples/x402-first-payment-client/](examples/x402-first-payment-client/) shows how a real buyer can move from quote-only checks to an opt-in wallet-owned x402 payment and capture receipt headers. It defaults to quote-only and refuses to pay unless `PAY_REAL_X402=1` and `EVM_PRIVATE_KEY` are provided by the buyer.
Wallet signing safety payment-policy example: [examples/wallet-signing-safety-pack/](examples/wallet-signing-safety-pack/) shows how to fetch the live wallet safety pack quote, turn amount/network/payTo/asset into `paymentPolicyInputs`, and compute a local `allow` or `deny` decision before any wallet-owned payment.
Wallet signing guard examples: [examples/wallet-signing-safety-pack/](examples/wallet-signing-safety-pack/) includes `npm run wallet-guard:mcp`, `npm run wallet-guard:flowise`, and `npm run wallet-guard:runtime` for applying a paid `agentEnforcementPayload` in MCP, Flowise, and buyer-owned wallet runtimes without signing or paying again.
Payment evidence center example: [examples/payment-evidence-center/](examples/payment-evidence-center/) shows how a buyer-side agent can verify live quote amount, Base network, `payTo`, spend cap, receipt headers, and paid JSON evidence before deciding whether a buyer-owned wallet should pay.
x402 receipt verifier example: [examples/receipt-verifier/](examples/receipt-verifier/) shows how a buyer-side agent can recompute `receiptHash`, `actionRef`, `verification.digest`, expected Base USDC network, `payTo`, amount cap, route, and transaction evidence after a buyer-owned payment. The sample verifier does not use a private key, sign, or send payment.
Agent payment safety control plane example: [examples/agent-payment-safety-control-plane/](examples/agent-payment-safety-control-plane/) shows how a buyer-side agent can load the safety control plane, quote the wallet-signing-safety first-purchase route, verify amount/network/payTo/spend cap, and stop before payment.
Agent payment risk gate example: [examples/agent-payment-risk-gate/](examples/agent-payment-risk-gate/) shows how a buyer-side agent can turn a live x402 quote into a local safe-to-pay decision by checking HTTP 402 status, amount, network, payTo, spend cap, and receipt evidence before any wallet-owned payment.
x402 next purchase router example: [examples/x402-next-purchase-router/](examples/x402-next-purchase-router/) shows how a buyer-side agent can read `x402NextPurchase` from a paid tool response, choose the wallet-safety or MCP next route, enforce amount/network/payTo policy, and stop before payment.
Agent payment control plane example: [examples/agent-payment-control-plane/](examples/agent-payment-control-plane/) shows how a buyer-side agent can load the broader control plane JSON, choose a route, verify live quote amount/network/payTo against policy, and stop before payment unless the buyer opts in from their own wallet environment.
Agent payment policy manifest: [examples/agent-payment-policy-manifest/](examples/agent-payment-policy-manifest/) gives buyer agents a local allowlist for first-purchase routes, a 0.02 USDC cap, expected Base USDC `payTo`, and a quote-only checker that refuses mismatched live 402 quotes.
Agent Payment Policy Compiler: [examples/agent-payment-policy-compiler/](examples/agent-payment-policy-compiler/) shows how a buyer-side agent can quote the paid compiler, verify amount/network/payTo, and then buy a generated `policyJson`, `mcpGuardConfig`, `flowiseGuardConfig`, and `auditLogSchema` only from a buyer-owned x402 client.
Agent Payment Approval Pack: [examples/agent-payment-approval-pack/](examples/agent-payment-approval-pack/) shows how a team can quote the paid approval pack, verify amount/network/payTo, and then buy `approvalPack`, `budgetApproval`, `securityReview`, `receiptEvidencePolicy`, `mcpApprovalGateConfig`, `flowiseApprovalGateConfig`, and `repeatApprovalContract` only from a buyer-owned x402 client.
Agent Spend Recurrence Guard: [examples/agent-spend-recurrence-guard/](examples/agent-spend-recurrence-guard/) shows how a buyer-side agent can quote the paid guard, verify amount/network/payTo, and then buy a per-payment `decision`, `spendLedgerEntry`, `nextPaymentPolicy`, `mcpGuardConfig`, `flowiseGuardConfig`, and `runtimeGuardSnippet` only from a buyer-owned x402 client.
x402 Payment Failure Doctor: [examples/payment-failure-doctor/](examples/payment-failure-doctor/) shows how a buyer or seller can diagnose a quote-to-payment failure, verify the diagnostic endpoint amount/network/payTo, and then buy a `paymentRecoveryPack` with `buyerSupportPacket`, `recoveryRunbook`, `repeatPurchaseContract`, `sameRequestRetryTemplate`, `officialClientRecipe`, `firstPaymentClientRecipe`, `facilitatorRecovery`, `receiptEvidenceRequired`, and `stopConditions` only from a buyer-owned x402 client.
x402 Wallet Funding Readiness Doctor: [examples/wallet-funding-readiness-doctor/](examples/wallet-funding-readiness-doctor/) shows how a buyer-side wallet, MCP client, or Flowise node can quote the paid balance-to-payment-header readiness doctor, verify amount/network/payTo, and then buy `paymentHeaderReadiness`, `officialClientHandoff`, `sameRequestRetry`, `mcpGuardConfig`, `flowiseGuardConfig`, and `repeatPurchaseContract` only from a buyer-owned x402 client.
x402 Client Compatibility Adapter: [examples/client-compatibility-adapter/](examples/client-compatibility-adapter/) shows how a buyer-side official x402 client, MCP client, or wallet agent can quote the compatibility adapter, verify amount/network/payTo, and then buy `officialClientAdapter`, `firstPaymentClientAdapter`, `headerCompatibilityMap`, `sameRequestRetry`, `receiptRequirements`, and `stopConditions` only from a buyer-owned x402 client.
x402 Buyer Client Adapter Pack: [examples/buyer-client-adapter-pack/](examples/buyer-client-adapter-pack/) shows how a buyer-owned wallet runtime, MCP client, Flowise node, or agent can quote the adapter pack, verify amount/network/payTo, and then buy `quoteValidationPolicy`, `environmentContract`, `nodeFetchClient`, `pythonHttpxOutline`, `mcpWrapperConfig`, `sameRequestRetryChecklist`, `receiptCapturePolicy`, and `failureStopConditions` only from a buyer-owned x402 client.
x402 Receipt Dispute Pack: [examples/receipt-dispute-pack/](examples/receipt-dispute-pack/) shows how a buyer-side wallet agent, MCP client, or seller can quote the receipt dispute pack, verify amount/network/payTo, and then buy `readiness`, `evidenceScore`, `blockers`, `missingEvidence`, `auditRecord`, `disputePacket`, and `nextPaymentPolicy` only from a buyer-owned x402 client.
x402 Directory Compliance Repair Pack: [examples/directory-compliance-repair-pack/](examples/directory-compliance-repair-pack/) shows how an x402 seller can quote the paid repair pack, verify amount/network/payTo, and then buy `status`, `complianceScore`, `repairActions`, `metadataPatch`, `checkoutSourceClassifier`, `sourceQualitySummary`, `trafficActionPlan`, `directorySubmissionCopy`, and `retestPlan` only from a seller-owned x402 client.
AI crawler monetization example: [examples/ai-crawler-monetization-kit/](examples/ai-crawler-monetization-kit/) shows how a content/API/MCP seller can quote the paid crawler monetization kit and inspect the expected deployable result shape before paying: `edgeGatewayPolicy`, `mcpPaymentPolicy`, `receiptEvidenceSchema`, `conversionEventSchema`, and `copyPasteDeploymentPlan`.
DeFi Agent Gateway example: [examples/defi-agent-gateway/](examples/defi-agent-gateway/) shows how a buyer-side agent can load the unified DeFi gateway JSON, quote MEV, slippage, bridge, approval, lending, LP, arbitrage, perps, and fresh-market routes, verify amount/network/payTo, and stop before payment unless a buyer-owned wallet opts in.
Checkout drop-off summary: [examples/checkout-dropoff-summary/](examples/checkout-dropoff-summary/) shows how an x402 seller can diagnose whether buyers stop at quote-only inspection, payment-header verification, or settlement. It parses local JSONL logs only and never signs, pays, or submits directory entries.
Checkout source quality: [examples/checkout-source-quality/](examples/checkout-source-quality/) shows how an x402 seller can decide whether quote volume is coming from likely buyers, monitors, indexers, or internal tests. It is useful when quote counts are high but payment headers remain low.
Recommended quote-only checkout for the bundled wallet and prepay decision:
```bash
npm run translate:first-quote
npm run wallet-policy:quote
npm run wallet-guard:mcp
npm run wallet-guard:flowise
npm run wallet-guard:runtime
npm run launchpad:quote
ROUTE_ID=wallet-signing-safety-pack MAX_USDC=0.02 node first-payment-client.mjs
```
Translate first-purchase example: [examples/translate-first-purchase/](examples/translate-first-purchase/) shows how to fetch the live `/v1/tools/translate` HTTP 402 quote, verify amount/network/payTo/spend cap, and stop before payment. It is the lowest-friction first paid proof and the default starting point.
Seller mini-check example: [examples/seller-mini-check/](examples/seller-mini-check/) shows how to fetch and decode the live HTTP 402 quote without paying, signing, registering, or using a private key.
x402 Seller Price Ladder Optimizer example: [examples/seller-price-ladder-optimizer/](examples/seller-price-ladder-optimizer/) shows how a seller can quote the deterministic price-ladder endpoint, verify amount/network/payTo, and then buy `routePriceLadder`, `abTestPlan`, `upgradePath`, and `rollbackRules` only from a seller-owned x402 client.
## Buyer Smoke Tests
MCP initialize:
```bash
curl -s https://gpt55.558686.xyz/mcp \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"smoke","version":"1.0.0"}}}'
```
x402 quote:
```bash
curl -i https://gpt55.558686.xyz/v1/chat/completions \
-H 'content-type: application/json' \
-d '{"model":"gpt-5.5","messages":[{"role":"user","content":"Say hi"}],"max_tokens":8}'
```
Expected unauthenticated response: HTTP `402` with a `payment-required` header containing Base USDC x402 payment requirements.
## Glama / Docker Smoke
This repository includes a small no-secret Docker wrapper for directory checks such as Glama. It starts a local Streamable HTTP MCP endpoint at `/mcp`, proxies to the public remote MCP endpoint when available, and falls back to local introspection responses for `initialize`, `tools/list`, `resources/list`, and `prompts/list`.
The wrapper does not handle private keys, wallet signatures, KYC, JWTs, custody, or paid execution. Paid calls still happen through the public x402 HTTP endpoints advertised by the live gateway.
Run locally:
```bash
npm start
```
In another shell:
```bash
npm run smoke
```
Build and run with Docker:
```bash
docker build -t gpt55-x402-gateway .
docker run --rm -p 3000:3000 gpt55-x402-gateway
```
Then submit the repository to Glama using the Dockerfile in this repo. After Glama creates a public server page and score badge, update directory PRs with the generated badge URL.
## Local Commands
```powershell
cd D:\gpt55-token-gateway
npm start
npm run smoke
npm run stats
npm run funnel
npm run monitor
```
Start a temporary HTTPS tunnel:
```powershell
D:\gpt55-token-gateway\start-tunnel.ps1
```
Use the `https://...trycloudflare.com` URL as the public base URL.
## Poe API Bot Settings
- `base_url`: tunnel URL, no trailing slash
- `api_type`: `chat_completions_api`
- `model`: `gpt-5.5`
- `api_key`: value of `PUBLIC_API_KEY` in `.env`
- `pricing.prompt`: `0.000005`
- `pricing.completion`: `0.00003`
- `pricing.input_cache_reads`: `0.0000005`
- `context_pricing`: optional; keep the same prices initially until real demand appears.
The gateway only forwards `gpt-5.5` upstream, even if a caller passes another model name.
## Create Poe Bot
1. Open `https://poe.com/api/keys` in a browser where you are logged in.
2. Create/copy a Poe API key.
3. Put it in `.env` as `POE_API_KEY=...`.
4. Run:
```powershell
cd D:\gpt55-token-gateway
npm run poe:create
```
## x402 / USDC Settlement
Set these in `.env` to require on-chain payment for callers that do not use `PUBLIC_API_KEY`:
```text
X402_ENABLED=true
X402_PAY_TO=0xYourBaseUsdcWallet
X402_NETWORK=eip155:8453
X402_PRICE=$0.0001
X402_LONG_PRICE=$0.002134
X402_MAX_PRICE=$0.066667
X402_TOOL_PRICE=$0.0001
X402_PROBE_PRICE=$0.0001
X402_ENABLE_UPTO=true
X402_UPTO_MARGIN=3.34
X402_UPTO_MIN_USD=0.0001
MAX_PAID_OUTPUT_TOKENS=192
MAX_LONG_PAID_OUTPUT_TOKENS=4096
MAX_TRUE_PAID_OUTPUT_TOKENS=128000
```
Restart the gateway after changing `.env`.
Calls with your `PUBLIC_API_KEY` still bypass the paywall, so Poe/private tests keep working.
Current x402 settings:
```text
network: Base mainnet (eip155:8453)
asset: USDC
pay_to: 0x1f0130669ca6fd02e025a984cc038f139df19a2f
compact_chat_price: $0.0001 per compact chat completion request, max 192 output tokens
long_chat_price: $0.002134 per long chat completion request, max 4096 output tokens
max_chat_price: $0.066667 per max-output chat completion request, max 128000 output tokens
tool_price: $0.0001 per tool request
probe_price: $0.0001 per payment probe
facilitator: PayAI x402 (https://facilitator.payai.network), fallback xpay.sh; dedicated CDP/Bazaar route remains /v1/paid/chat-cdp
schemes: exact, upto on supported paid routes; /v1/x402-ping remains exact-only for lightweight proof checks
upto_status: enabled on the public production gateway; live HTTP 402 quotes remain authoritative
```
The lowest-cost x402 proof endpoint is available as both `GET /v1/x402-ping` and `POST /v1/x402-ping`.
It does not call the upstream model.
The CDP/Bazaar-compatible paid chat endpoint is `GET /v1/paid/chat-cdp?q=...&max_tokens=...`; it returns a live HTTP `402` x402 quote at `$0.001` before payment and pays to the public Base USDC address above after settlement.
The public production gateway now advertises exact and upto x402 quotes on supported paid resources. Fetch the target endpoint without payment and use the HTTP `402` `payment-required` header as the authoritative amount immediately before paying. Historical marketplace listings or directory caches can lag behind live quotes.
Check the payment requirement:
```powershell
cd D:\gpt55-token-gateway
npm run x402:check
```
Dry-run the cheapest payment flow without sending funds:
```powershell
cd D:\gpt55-token-gateway
npm run pay:smoke
```
`pay:smoke` defaults to `X402_PAY_SMOKE_TARGET=ping-get`. Other targets are `ping-post`, `summarize`, and `chat`.
It only sends a real payment when both `X402_PAYER_PRIVATE_KEY` is set and `CONFIRM_X402_PAYMENT=true`.
Monitor the full discovery and settlement funnel:
```powershell
cd D:\gpt55-token-gateway
npm run monitor
```
The monitor writes `logs\monitor.jsonl` and checks:
- public health and discovery endpoints
- x402 402 quote shape and Bazaar extension
- configured facilitator support and candidate facilitator availability
- facilitator and CDP Bazaar discovery indexing
- Base USDC receiver balance
- local quote/settle/completion funnel
Submit to x402-list for manual review after setting an operator email:
```powershell
cd D:\gpt55-token-gateway
$env:X402_LIST_CONTACT_EMAIL="you@example.com"
npm run x402list:submit
```
Submit the public discovery URLs to IndexNow-capable search engines:
```powershell
cd D:\gpt55-token-gateway
npm run indexnow:submit
```
The gateway serves the IndexNow key at `/<key>.txt`. Set `INDEXNOW_KEY` only if you need a custom stable key; otherwise a deterministic public key is generated from the site URL and pay-to address.
Facilitator and directory discovery are not only website crawls. The pay-to address and configured facilitator must accept the payment requirements, and Bazaar-style discovery can lag until a successful settlement carries the resource metadata.
## Logs
Usage logs are written to:
```text
D:\gpt55-token-gateway\logs\usage.jsonl
```
Estimate revenue and cost from the local usage log:
```powershell
cd D:\gpt55-token-gateway
npm run stats
```
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