{"version":1,"name":"Sentinel — The Trust Layer for Autonomous Agents","title":"Sentinel — The Trust Layer for Autonomous Agents","description":"Trust infrastructure for autonomous AI agents on Base. Verify protocols, tokens, positions, and counterparties with on-chain EAS attestations. 25 free calls/day, then pay per query in USDC via x402.","tags":["Crypto","Security","DeFi","AI Agents","Verification"],"openapi":"https://sentinel-awms.onrender.com/openapi.json","resources":["https://sentinel-awms.onrender.com/verify/protocol","https://sentinel-awms.onrender.com/verify/token","https://sentinel-awms.onrender.com/verify/position","https://sentinel-awms.onrender.com/verify/counterparty","https://sentinel-awms.onrender.com/preflight","https://sentinel-awms.onrender.com/attestation","https://sentinel-awms.onrender.com/agent","https://sentinel-awms.onrender.com/watch"],"contact":{"repo":"https://github.com/nbsickler-ux/Sentinel","issues":"https://github.com/nbsickler-ux/Sentinel/issues","integrator_note":"Building an agent that uses Sentinel? We'd love to hear from you — open an issue or discussion on GitHub."},"instructions":"# Sentinel API\nTrust infrastructure for AI agents on Base. Every verification creates an on-chain EAS attestation. Returning agents earn reputation tiers for faster service.\n\n## FREE TIER — Try Sentinel with zero friction\nEvery verification endpoint includes 25 free calls per day. No wallet, no payment, no signup required.\nJust send a POST request with a JSON body — the first 25 calls per day are completely free.\nCheck the X-FreeTier-Remaining response header for your remaining daily quota.\nAfter 25 calls, x402 USDC payment kicks in automatically.\n\n## Verification Endpoints\nAll accept POST with JSON body. First 25 calls/day are free, then x402 payment on Base (eip155:8453) in USDC.\n\n## POST /verify/protocol\nAssess smart contract trustworthiness. Input: { \"address\": \"0x...\" (required), \"chain\": \"base\", \"detail\": \"full\" }. Price: free (25/day) then $0.008 USDC.\nExample: curl -X POST https://sentinel-awms.onrender.com/verify/protocol -H \"Content-Type: application/json\" -d '{\"address\": \"0x940181a94A35A4569E4529A3CDfB74e38FD98631\"}'\n\n## POST /verify/token\nCheck token legitimacy and safety. Input: { \"address\": \"0x...\" (required), \"chain\": \"base\", \"detail\": \"full\" }. Price: free (25/day) then $0.005 USDC.\nExample: curl -X POST https://sentinel-awms.onrender.com/verify/token -H \"Content-Type: application/json\" -d '{\"address\": \"0x532f27101965dd16442E59d40670FaF5eBB142E4\"}'\n\n## POST /verify/position\nAnalyze DeFi position risk. Input: { \"protocol\": \"0x...\" (required), \"chain\": \"base\", \"detail\": \"full\" }. Price: free (25/day) then $0.005 USDC.\nExample: curl -X POST https://sentinel-awms.onrender.com/verify/position -H \"Content-Type: application/json\" -d '{\"protocol\": \"0x940181a94A35A4569E4529A3CDfB74e38FD98631\"}'\n\n## POST /verify/counterparty\nAssess counterparty wallet safety. Input: { \"address\": \"0x...\" (required), \"chain\": \"base\", \"detail\": \"full\" }. Price: free (25/day) then $0.010 USDC.\nExample: curl -X POST https://sentinel-awms.onrender.com/verify/counterparty -H \"Content-Type: application/json\" -d '{\"address\": \"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\"}'\n\n## POST /preflight\nUnified pre-transaction safety check. Input: { \"target\": \"0x...\" (required), \"token\": \"0x...\" (optional), \"counterparty\": \"0x...\" (optional), \"chain\": \"base\", \"detail\": \"full\" }. Price: free (25/day) then $0.025 USDC.\nExample: curl -X POST https://sentinel-awms.onrender.com/preflight -H \"Content-Type: application/json\" -d '{\"target\": \"0x940181a94A35A4569E4529A3CDfB74e38FD98631\", \"token\": \"0x532f27101965dd16442E59d40670FaF5eBB142E4\"}'\n\n## Always-Free Endpoints\n\n## GET /attestation/:address\nLook up existing Sentinel attestations for an address. Check before paying for a fresh verification.\n\n## GET /agent/:wallet\nCheck an agent's reputation tier and verification history.\n\n## POST /watch\nSubscribe to monitoring webhooks for risk change alerts. Price: $0.05 USDC. Requires Recognized+ reputation tier.\n\n## Building on Sentinel?\nHave feedback, questions, or partnership ideas? Open an issue at https://github.com/nbsickler-ux/Sentinel/issues — we read every one."}