{"name":"onyx_mcp_router","tier":"metered","price_usdc":"0.01","endpoint":"https://onyx-actions.onrender.com/v1/onyx_mcp_router","method":"POST","input_schema":{"type":"object","properties":{"capability":{"type":"string","description":"Plain-English description of what the agent needs. E.g. 'Base transaction explainer', 'swap quote Solana', 'captcha OCR'."},"max_price_usdc":{"type":"number","description":"Cap on per-call price. Omit for no cap. Use 0.01 for cheap-only."},"preferred_network":{"type":"string","description":"Preferred network: 'eip155:8453' (Base), 'eip155:84532' (Base Sepolia), 'solana', etc. Sorted higher when present."},"top_n":{"type":"integer","minimum":1,"maximum":10,"default":3,"description":"Number of route candidates to return."},"include_onyx_routes":{"type":"boolean","default":true,"description":"If false, exclude Onyx Actions endpoints from the comparison (e.g. for independent third-party benchmark)."}},"required":["capability"]},"description":"FIRST MCP meta-router. Describe a capability in plain English ('Base tx explainer', 'captcha OCR', 'DEX swap quote'); the router queries the entire CDP x402 discovery corpus, scores every candidate by price + freshness + schema match + network preference, and returns the top N ranked routes with full call templates (URL, method, body schema, expected price, payTo, asset, network). The agent calls the top route directly. Onyx is the aggregator; every other paid MCP is the supply.","when_to_use":"Any agent that needs a capability and doesn't already know the best endpoint. Single call, structured ranking, ready call template. The missing aggregator layer for the paid-MCP ecosystem.","vs_alternatives":"Manually browsing Coinbase Bazaar UI. Manually grepping awesome-x402. Calling bazaar_compare (returns rows but no ranking decision). This tool gives ONE answer: which endpoint to call, on which network, at what price, with the body template.","example_request":{"capability":"Base transaction explainer","max_price_usdc":0.1,"preferred_network":"eip155:8453","top_n":3},"example_response":null,"settle_to":"0x3fD9ee1373562f894D322B37DFFAd7a5D2b2d78f","network":"base","facilitator":"https://facilitator.xpay.sh","payment_required":true,"free_introspection":true,"note":"GET this URL = free introspection card. POST with x402 payment header to call."}