{"uid":"cap_7ucxGZd3EpZ2CKCY76kBq","slug":"x402-broker-mcp-validator-506f6a12","name":"X402-BROKER MCP Validator","description":"Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.","url":"https://mcp-gateway.agentdiet.dev/v1/mcp-validator?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":{"data":{},"status":"ok","roi_proof":{"compression_ratio_pct":91.4}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Lcllumm4QTLH1dgdSEAVb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and routes requests to MCP servers, x402 APIs, and A2A agents via a deterministic broker gateway, settling payments in USDC on Base.","exampleAgentPrompt":"Can you validate the target endpoint 'https://some-mcp-server.example.com' using a GET request through the MCP broker gateway to confirm it's reachable and x402-compliant?","exampleUseCases":[{"title":"Pre-flight MCP server health check","prompt":"Before I route any paid agent calls, validate whether the MCP server at 'https://my-mcp-tool.dev/api' is reachable and returning a valid response — use a GET request."},{"title":"x402 API compliance verification","prompt":"I want to confirm that the x402 API at 'https://api.dataprovider.xyz' is properly set up and will accept requests — can you run a validation check on it via the broker?"},{"title":"A2A agent endpoint discovery","prompt":"Check if the agent endpoint 'https://agent.myworkflow.io/v1/run' is live and compliant with MCP standards using a GET through the gateway so I know it's safe to integrate."}],"resultDescription":"Returns a JSON object with a status field ('ok' or error), a data payload from the validated target, and an roi_proof object containing a compression_ratio_pct metric indicating how efficiently the gateway processed the request.","failureModes":["Target endpoint unreachable or times out — returns error status","Invalid or missing 'type' or 'method' fields in input — schema validation error","Target URL not registered or not compliant with x402/MCP standards","Payment settlement failure on Base network — request rejected","Malformed query parameters preventing routing to target"],"whenToPreferThis":"Choose this endpoint when you need to programmatically verify that an MCP server, x402 API, or A2A agent endpoint is live, reachable, and protocol-compliant before committing to integration or paid calls. It is particularly useful as a pre-flight check in agentic workflows that route across thousands of MCP servers, where endpoint validity is uncertain. Prefer it over direct calls when you need deterministic validation with a proof-of-work signal (compression ratio) and USDC-settled micro-payment accountability.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:42:12.454Z","isFirstParty":false,"canonicalSlug":"x402-broker-mcp-validator-506f6a12"}