{"uid":"cap_s9Q7WYk5866lxP0oCmhKD","slug":"prompt-guard-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-4bea7f04","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://prompt-guard.agentdiet.dev/v1/x402-verifier)","url":"https://prompt-guard.agentdiet.dev/v1/x402-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_ttHgJs517qD7ZiGT5ql_C","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Audits a remote agent, MCP, or x402 URL for JSON-RPC compliance, latency SLA adherence, OpenAPI schema validity, and HTTP 402 payment settlement headers.","exampleAgentPrompt":"Can you audit my MCP endpoint at https://myagent.example.com/mcp and tell me if it passes JSON-RPC compliance, latency SLA, OpenAPI schema checks, and HTTP 402 settlement header validation?","exampleUseCases":[{"title":"Pre-deployment MCP server compliance check","prompt":"Before I go live, can you run a full compliance audit on my MCP server at https://staging.myapp.dev/mcp — I need to know if it's JSON-RPC compliant, whether the latency SLA looks good, and if the OpenAPI schema is valid?"},{"title":"HTTP 402 payment header verification","prompt":"I've just set up an x402 payment-gated API at https://api.myservice.io/v1/data — can you check whether the HTTP 402 headers and payment settlement configuration are correctly implemented according to the x402 v2 spec?"},{"title":"Third-party agent endpoint due diligence","prompt":"I'm thinking of integrating with an external A2A agent at https://partner-agent.example.com/a2a — can you audit it for protocol compliance, latency SLA, and whether it properly handles HTTP 402 before I wire it into my workflow?"}],"resultDescription":"Returns a compliance report object covering: JSON-RPC protocol conformance, latency SLA pass/fail with timing data, OpenAPI schema validity assessment, and HTTP 402 / x402 settlement header correctness for the audited URL.","failureModes":["Target URL is unreachable or times out, resulting in a connectivity error","Target URL returns unexpected content type, making JSON-RPC compliance check fail","Missing or malformed HTTP 402 headers cause payment compliance to fail","OpenAPI schema absent or invalid at the target, resulting in schema check failure","Invalid or empty 'url' parameter returns a 400 bad request error"],"whenToPreferThis":"Choose this endpoint when you need to programmatically verify that a remote A2A agent, MCP server, or x402-enabled service correctly implements JSON-RPC, meets latency SLAs, exposes a valid OpenAPI schema, and has properly configured HTTP 402 payment headers — especially before integrating or deploying agent-to-agent workflows that depend on these protocol guarantees.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:35:16.162Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-fe721720"}