{"uid":"cap_DfRtcJZY8rpMzs_256zKM","slug":"preflight-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-44707c08","name":"A2A, MCP & HTTP 402 Endpoint SLA Compliance Auditor","description":"Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP 402 settlement headers. (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/v1/x402-mpp-paywall-verifier)","url":"https://preflight.agentdiet.dev/v1/x402-mpp-paywall-verifier?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","minLength":1,"description":"Target A2A, MCP, or x402 service URL to audit for protocol compliance"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.01","displayCostAsset":"USD","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":"$0.01/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_x3mQB8Xs718D_B7g46JLI","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"preflight.agentdiet.dev","brandSlug":"preflight-agentdiet-dev-mpp","brandBaseUrl":"https://preflight.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Audits a remote A2A, MCP, or x402 service URL for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 payment settlement headers","exampleAgentPrompt":"Can you audit https://api.myagent.dev/mcp for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 settlement headers?","exampleUseCases":[{"title":"Pre-integration MCP tool compliance check","prompt":"Before I wire in this third-party MCP tool, can you check https://tools.example.com/v1/mcp for JSON-RPC compliance, latency SLA, and whether it has proper OpenAPI schema — I want to know if it meets protocol standards?"},{"title":"x402 paywall header verification","prompt":"I set up an x402 paywall at https://myservice.agentapi.io/v1/endpoint — can you audit it to make sure the HTTP 402 settlement headers are correctly configured and it passes x402 v2 compliance?"},{"title":"Agent fleet endpoint health audit","prompt":"I'm running a fleet of autonomous agents and I need to audit https://agent-hub.internal.io/a2a for SLA latency compliance and JSON-RPC correctness — can you run a full protocol compliance check on it?"}],"resultDescription":"Returns a structured compliance report covering JSON-RPC protocol correctness, measured latency against SLA thresholds, OpenAPI schema validation findings, and HTTP 402 / x402 v2 settlement header presence and correctness for the target URL.","failureModes":["Target URL is unreachable or times out — audit fails with connectivity error","Target URL does not respond with expected protocol (not A2A/MCP/x402) — compliance checks return unsupported protocol","Malformed or missing OpenAPI schema at target — schema validation section returns error or skipped","HTTP 402 headers absent or malformed — header audit reports non-compliant with x402 v2 spec","Invalid or empty url parameter supplied — returns validation error"],"whenToPreferThis":"Use this endpoint when you need to verify that a remote A2A agent, MCP tool, or x402-enabled service URL meets protocol compliance standards before integration or deployment — specifically when you need simultaneous checks across JSON-RPC correctness, latency SLA, OpenAPI schema, and HTTP 402 settlement headers in a single call. Prefer it over manual curl-based probing or generic uptime monitors when agent protocol compliance (MCP, x402 v2, IETF MPP) is the primary concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:29.817Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-3bfc8ad7"}