{"uid":"cap_23kdfI0dYlf_UUr8rFBTj","slug":"preflight-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-f777edda","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/paywall-check)","url":"https://preflight.agentdiet.dev/v1/paywall-check?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_KprdSjcgYKV66RNCSn9Ni","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 any A2A agent, MCP server, or x402 paywall URL for JSON-RPC compliance, latency SLA, OpenAPI schema validity, and HTTP 402 settlement headers.","exampleAgentPrompt":"Can you audit https://myagent.example.com/mcp for JSON-RPC compliance, check its latency SLA, and verify whether its HTTP 402 payment headers are correctly set up?","exampleUseCases":[{"title":"Pre-deployment MCP server compliance check","prompt":"Before I go live, can you audit https://staging.myservice.dev/mcp to confirm it's properly JSON-RPC compliant and its latency SLA is within acceptable bounds?"},{"title":"Verify x402 paywall headers on agent endpoint","prompt":"I'm setting up a paid agent tool — can you check https://api.mytool.io/v1/chat to see if the HTTP 402 settlement headers and x402 payment config are correctly configured?"},{"title":"Debugging a third-party A2A agent integration","prompt":"I'm trying to integrate with a third-party agent at https://partner.agentservice.io/a2a but it keeps failing — can you audit that URL for protocol compliance issues and tell me what's wrong?"}],"resultDescription":"Returns a compliance report object covering: JSON-RPC spec adherence, measured latency vs SLA thresholds, OpenAPI schema presence and validity, and HTTP 402/x402 settlement header inspection — all for the submitted target URL.","failureModes":["Target URL is unreachable or times out — compliance report may be partial or return a connection error","Target URL returns non-standard responses that cannot be parsed for JSON-RPC compliance","URL is missing the required `url` query parameter — returns 400 Bad Request","x402 payment for the audit call itself fails — request not processed","Target endpoint blocks probing or rate-limits the auditor"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify that an A2A agent, MCP server, or x402-enabled paywall URL is correctly implementing the relevant protocols before integrating or deploying. It is particularly valuable in CI/CD pipelines for agent infrastructure, when onboarding third-party agent tools, or when debugging HTTP 402 payment header misconfigurations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:22:58.762Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-3bfc8ad7"}