nexus-agent

# NEXUS — AI Agent Services for the Agentic Economy > The only MCP server with live crypto signals + Kalshi prediction markets + wallet AML + agent reputation scoring. Pay per call, no API keys, no subscriptions.    **Add to Claude Code in one command:** ```bash claude mcp add nexus --transport streamable-http https://nexus-agent-xa12.onrender.com/mcp ``` **Enterprise POST hooks (Bedrock / Agno):** ```bash # $0.02 fast signal (after awal pay) curl -X POST https://nexus-agent-xa12.onrender.com/v1/tools/signals \ -H "Content-Type: application/json" -H "X-Payment: <from awal>" \ -d '{"symbol":"BTC","tier":"fast"}' ``` ## What it does | Tool | What you get | Price | |------|-------------|-------| | `market_signal_fast` | Coingecko momentum — no Claude | **$0.02/call** | | `market_signal` | BTC/ETH/SOL signal with confidence score | $0.05/call | | `wallet_intel` | AML risk score for any address | $0.001/call | | `web_search` | AI-summarized web results | $0.02/call | | `scrape_url` | Scrape any URL → clean text | $0.10/call | | `aggregate` | AI + QuantOracle Bollinger/Z-score + Kalshi — aggregated consensus | $0.15/call | | `kalshi_consensus` | Fed/GDP/CPI/Bitcoin prediction market data | $0.05/call | **Free infrastructure (no payment needed):** - `GET /reputation?wallet=0x...` — trust score 0–100 for any agent wallet - `GET /dns?capability=market_signal` — route to best available service - `GET /accuracy` — live signal track record, resolved 24h after each signal - `GET /badge/BTC` — live SVG signal badge for your README ## Why x402? No API keys. No subscriptions. Your agent pays $0.05 and gets a signal. That's it. Works with Claude Code, Cursor, Codex, any MCP client. Payments settle on Base mainnet in USDC. ``` Agent hits /oracle/signal → 402 with {amount: 50000, asset: USDC, payTo: 0xc91c...} → Agent pays on-chain → Signal returned: {signal: "BULLISH", confidence: 0.78, reason: "..."} ``` ## Add a live signal badge to your README Embed in any crypto project — free, auto-updating, no signup: ```markdown    ``` 🟢 green = BULLISH · 🔴 red = BEARISH · ⚫ gray = NEUTRAL · updates every 15 min ## Quick test ```bash # Free: Kalshi prediction market consensus (no payment needed) curl "https://nexus-agent-xa12.onrender.com/mcp" -X POST \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"kalshi_consensus","arguments":{"category":"Fed"}}}' # Paid: use awal to pay $0.05 USDC and get a BTC signal npm install -g @agentic-labs/awal npx awal auth login your@email.com npx awal x402 pay "https://nexus-agent-xa12.onrender.com/oracle/signal?symbol=BTC" ``` Or with Python x402: ```python from x402.clients import x402_requests from eth_account import Account sess = x402_requests(account=Account.from_key(PRIVATE_KEY), max_value=200_000) r = sess.get("https://nexus-agent-xa12.onrender.com/oracle/signal?symbol=BTC") print(r.json()) # {"signal": "BULLISH", "confidence": 0.78, "reason": "..."} ``` ## Install in Claude Desktop ```json { "mcpServers": { "nexus": { "type": "http", "url": "https://nexus-agent-xa12.onrender.com/mcp" } } } ``` Or drop `.mcp.json` in your project root for automatic loading in Claude Code. ## Agent Reputation Oracle (free) NEXUS tracks x402 payment history and scores agents 0–100: ```bash curl "https://nexus-agent-xa12.onrender.com/reputation?wallet=0x..." # → {"score": 78.5, "tier": "TRUSTED", "calls_total": 142, "success_rate": "96%"} ``` Tiers: **TRUSTED** (80+) / **ESTABLISHED** (60+) / **NEW** (40+) / **FLAGGED** (<40) ## Agent DNS (free) Route any capability to the best available service: ```bash curl "https://nexus-agent-xa12.onrender.com/dns?capability=market_signal&budget=0.10" # → {"recommended": {"name": "NEXUS Oracle", "endpoint": "...", "price_usdc": 0.05}} ``` ## Signal Track Record Every signal is logged and resolved 24h later. Live stats at `/accuracy`. Methodology: BULLISH correct if +1% in 24h; BEARISH if −1%; NEUTRAL if within ±1%. ## Audit Trail Every call produces a deterministic `action_ref` per the argentum-core spec: ```bash curl "https://nexus-agent-xa12.onrender.com/receipt?action_type=oracle.signal&scope=BTC" # → {"action_ref": "sha256(agent_id:action_type:scope:ts)", "spec": "argentum-core/action-ref-v1"} ``` Independently verifiable — any third party with the preimage fields can reproduce the hash. --- Built on Base mainnet. Payments to: `0xc91cE6291eDC0713ec753BAFBA002506ffb2b95c` Discussed in: [microsoft/autogen#7674](https://github.com/microsoft/autogen/issues/7674) Receipt spec: [argentum-core/action-ref-v1](https://github.com/giskard09/argentum-core/blob/main/docs/spec/action-ref.md)