{"uid":"cap_hSfopkCunEdpIIJUUbLyT","slug":"prompt-guard-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-c88584ce","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-mpp-paywall-verifier)","url":"https://prompt-guard.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_JHKDiMEgkVYRAm7LCMbXJ","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, OpenAPI schema validity, and HTTP 402 payment settlement headers","exampleAgentPrompt":"Can you audit https://my-agent.example.com/api for JSON-RPC and HTTP 402 compliance — I want to know if it passes SLA, has valid OpenAPI schema, and the x402 payment headers are set up correctly?","exampleUseCases":[{"title":"Pre-integration agent endpoint check","prompt":"Before I wire this new MCP server into my swarm, can you run a full compliance audit on https://tools.mycompany.ai/mcp — I need to know if it's JSON-RPC compliant, what its latency looks like, and whether the OpenAPI schema is valid?"},{"title":"x402 paywall configuration verification","prompt":"I just set up an HTTP 402 paywall on https://api.agentstore.dev/v1/data-feed — can you check if the x402 v2 settlement headers are properly configured and the payment flow would work for an AI agent hitting it?"},{"title":"Third-party agent SLA due diligence","prompt":"We're evaluating a vendor's A2A endpoint at https://vendor-agent.example.com/a2a before signing an SLA — can you audit it for protocol compliance, latency, and whether it correctly handles HTTP 402 payment responses?"}],"resultDescription":"Returns a compliance audit report covering JSON-RPC conformance, measured latency against SLA thresholds, OpenAPI schema validity, and HTTP 402 / x402 v2 payment header correctness for the submitted target URL","failureModes":["Target URL is unreachable or times out — returns connectivity error","Invalid or malformed URL provided — returns validation error","Target endpoint returns unexpected protocol or non-standard responses — partial audit with warnings","x402 payment required to access this auditor endpoint itself — HTTP 402 returned if payment not settled","Target URL blocks probe requests — audit may be incomplete"],"whenToPreferThis":"Choose this endpoint when you need to verify that a specific agent, MCP server, or x402-gated API meets protocol compliance standards before integrating it into an agent pipeline, swarm, or marketplace — especially when HTTP 402 payment header correctness or JSON-RPC conformance is a concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:46:28.656Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-a2a-mcp-http-402-endpoint-sla-compliance-fe721720"}