{"uid":"cap_Oiw3lsHYrU_LAkX6Z7T80","slug":"assay-a2a-mcp-security-observatory-cc932127","name":"Assay A2A & MCP Security Observatory","description":"Live A2A & MCP endpoint security auditor, Tool Definition Quality Score (TDQS) certifier, prompt-injection scanner, and cryptographic trust oracle.","url":"https://assay.agentdiet.dev/v1/certify?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","POST"],"type":"string"},"queryParams":{"type":"object","properties":{"target":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"dossier":{"grade":"A","score":95,"target":"https://example.com"},"receipt":"asr_rcpt_sample","verdict":"allow"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qlasdBvNOdFZeXjTiqfls","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_mk7RJs57IQBfhhSLy9wIq","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs a cryptographic pre-flight security audit, schema conformance check, and TDQS reputation scoring on A2A, MCP, or x402 endpoints, returning a grade, score, and allow/deny verdict.","exampleAgentPrompt":"Run a security audit on https://payments.example.com using a GET request and tell me if it passes — I need the trust grade and verdict before I connect my agent to it.","exampleUseCases":[{"title":"Pre-flight check before agent tool use","prompt":"Before my agent calls that new MCP tool at https://tools.example.com, run a security audit on it with a GET request and tell me if it's safe — I want to see the grade and whether it gets an allow verdict."},{"title":"Vetting an x402 payment endpoint","prompt":"I'm about to wire my agent to an x402 payment endpoint at https://pay.vendor.dev — can you certify it first and give me the TDQS score so I know it's not a risk?"},{"title":"Screening A2A endpoints in a marketplace","prompt":"I found an A2A endpoint at https://agent.marketplace.io that I want to integrate — please audit it using a GET and show me the full security dossier before I proceed."}],"resultDescription":"Returns a JSON object containing a 'dossier' with a letter grade (e.g. 'A'), a numeric score (0-100), and the audited target URL; a 'verdict' of 'allow' or 'deny'; and a 'receipt' token string for record-keeping.","failureModes":["Target URL is unreachable or returns non-standard responses — audit may fail or return incomplete dossier","Invalid or missing 'target' query parameter — request rejected with schema validation error","Endpoint does not conform to A2A/MCP/x402 protocols — may return low score or deny verdict","Payment not attached or insufficient USDC — x402 payment required error","Target URL times out during cryptographic probe — partial or failed audit result"],"whenToPreferThis":"Choose this endpoint when you need a structured, scored security verdict on an agentic endpoint (A2A, MCP, or x402) before connecting or integrating it — especially when you require a letter grade, TDQS reputation score, schema conformance check, and a formal allow/deny verdict in a single call. Prefer it over generic port scanners or HTTP linters when the target is specifically an AI agent protocol endpoint and you need audit receipts for compliance or logging.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T15:01:45.484Z","isFirstParty":false,"canonicalSlug":"assay-a2a-mcp-security-observatory-cc932127"}