{"id":11907,"name":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a pa","description":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — the key integrity check — does the payTo the endpoint actually demands in its live HTTP 402 challenge MATCH the payTo the catalog advertises (payTo_match). It runs a keyless HEAD/OPTIONS/402 probe that never moves funds, extracts the real payTo/amount/asset/network from the challenge, scores listing freshness, and — if you pass a prev snapshot {payTo,amount,lastUpdated} — flags whether the endpoint changed since you last saw it (anti-rug). Output is a 0-100 scorecard + letter grade + reason codes + an actionable verdict (pay_ok / caution / do_not_pay). For any router, wallet agent or M2M client that pays third-party x402 endpoints and needs to avoid paying a hijacked, dead, or repriced resource. Deterministic, no LLM, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.","card_url":"https://x402meta.hergertsynthora.com/.well-known/agent-card.json","endpoint":"https://x402meta.hergertsynthora.com/service","protocol_version":"0.3.0","first_seen":"2026-10-10T13:30:59.011572+00:00","last_verified":"2026-10-10T13:30:59.011572+00:00","card":{"mcp":{"endpoint":"https://x402meta.hergertsynthora.com/mcp","transport":"http-jsonrpc"},"url":"https://x402meta.hergertsynthora.com/service","name":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a pa","x402":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo":"0x6D9F318463168fF637b50E5b9a21392e97c7c167","amount":"10000","network":"eip155:8453","resource":"https://x402meta.hergertsynthora.com/service"},"skills":[{"id":"x402meta","name":"x402meta","tags":["x402meta","x402","synthora","m2m","a2a"],"examples":["{\"endpoint_url\": \"https://api.exa.ai/search\"}"],"inputModes":["application/json"],"description":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — the key integrity check — does the payTo the endpoint actually demands in its live HTTP 402 challenge MATCH the payTo the catalog advertises (payTo_match). It runs a keyless HEAD/OPTIONS/402 probe that never moves funds, extracts the real payTo/amount/asset/network from the challenge, scores listing freshness, and — if you pass a prev snapshot {payTo,amount,lastUpdated} — flags whether the endpoint changed since you last saw it (anti-rug). Output is a 0-100 scorecard + letter grade + reason codes + an actionable verdict (pay_ok / caution / do_not_pay). For any router, wallet agent or M2M client that pays third-party x402 endpoints and needs to avoid paying a hijacked, dead, or repriced resource. Deterministic, no LLM, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.","inputSchema":{"type":"object","anyOf":[{"required":["endpoint_url"]},{"required":["payTo"]}],"properties":{"prev":{"type":"object","properties":{"payTo":{"type":"string"},"amount":{"type":"string"},"lastUpdated":{"type":"string"}},"description":"Optional prior snapshot to detect change (anti-rug)."},"payTo":{"type":"string","description":"A payTo address (0x…40hex) to look up in the catalog instead of / in addition to a URL."},"endpoint_url":{"type":"string","description":"The x402 endpoint URL to preflight (http/https). Either this or payTo is required."}}},"outputModes":["application/json"]}],"version":"1.0.0","provider":{"url":"https://hergertsynthora.com","organization":"SYNTHORA"},"security":[{"x402":[]}],"description":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — the key integrity check — does the payTo the endpoint actually demands in its live HTTP 402 challenge MATCH the payTo the catalog advertises (payTo_match). It runs a keyless HEAD/OPTIONS/402 probe that never moves funds, extracts the real payTo/amount/asset/network from the challenge, scores listing freshness, and — if you pass a prev snapshot {payTo,amount,lastUpdated} — flags whether the endpoint changed since you last saw it (anti-rug). Output is a 0-100 scorecard + letter grade + reason codes + an actionable verdict (pay_ok / caution / do_not_pay). For any router, wallet agent or M2M client that pays third-party x402 endpoints and needs to avoid paying a hijacked, dead, or repriced resource. Deterministic, no LLM, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0","securitySchemes":{"x402":{"type":"http","scheme":"x402","description":"HTTP 402 micropayment. 10000 atomic USDC on eip155:8453."}},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"preferredTransport":"HTTP+JSON","additionalInterfaces":[{"url":"https://x402meta.hergertsynthora.com/service","transport":"HTTP+JSON"},{"url":"https://x402meta.hergertsynthora.com/a2a","transport":"JSONRPC"}]},"signature_status":"unsigned","signature_detail":"No card signature supplied","signature_key_url":null,"signature_checked_at":"2026-10-10T13:30:59.011572+00:00","domain_claimed_at":null,"domain_proof_checked_at":null,"source_name":"Agent Tools Catalog","source_url":"https://agent-tools.cloud","last_check":{"checked_at":"2026-10-10T13:30:59.011572+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"also_published_at":[],"history_urls":["https://x402meta.hergertsynthora.com/.well-known/agent-card.json"],"skills":[{"skill_id":"x402meta","name":"x402meta","description":"x402 preflight / reputation — verify BEFORE you pay. Give it an x402 endpoint_url (or a payTo address) and it returns, in one cheap deterministic call: is the resource reachable, is it present in the CDP Bazaar discovery catalog (serviceName, declared payTo, price, network, tags, last_seen), and — the key integrity check — does the payTo the endpoint actually demands in its live HTTP 402 challenge MATCH the payTo the catalog advertises (payTo_match). It runs a keyless HEAD/OPTIONS/402 probe that never moves funds, extracts the real payTo/amount/asset/network from the challenge, scores listing freshness, and — if you pass a prev snapshot {payTo,amount,lastUpdated} — flags whether the endpoint changed since you last saw it (anti-rug). Output is a 0-100 scorecard + letter grade + reason codes + an actionable verdict (pay_ok / caution / do_not_pay). For any router, wallet agent or M2M client that pays third-party x402 endpoints and needs to avoid paying a hijacked, dead, or repriced resource. Deterministic, no LLM, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.","tags":["x402meta","x402","synthora","m2m","a2a"],"quality_warning":false}],"quality_flags":["bulk_publisher"],"check_history":{"checks":1,"passed":1},"recent_checks":[{"card_url":"https://x402meta.hergertsynthora.com/.well-known/agent-card.json","checked_at":"2026-10-10T13:30:59.011572+00:00","success":true,"http_status":200,"detail":"Agent Card validated"}],"endpoint_tls_check":null,"protocol_check":{"checked_at":"2026-10-10T13:30:59.011572+00:00","state":"unconfirmed","http_status":503,"detail":"Endpoint did not return an A2A task-not-found response"},"events":[],"relationships":[],"verification":{"agent_card_url":"https://x402meta.hergertsynthora.com/.well-known/agent-card.json","last_successful_card_check":"2026-10-10T13:30:59.011572+00:00","latest_card_check":{"checked_at":"2026-10-10T13:30:59.011572+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"signature_status":"unsigned","signature_checked_at":"2026-10-10T13:30:59.011572+00:00","task_endpoint_tested":true,"task_execution_tested":false,"endpoint_tls_checked_at":null,"endpoint_tls_reachable":null,"protocol_check_state":"unconfirmed","protocol_checked_at":"2026-10-10T13:30:59.011572+00:00","provider_identity_verified":false,"domain_claimed_at":null,"domain_proof_checked_at":null}}