{"uid":"cap_Cqa60cRSoWD5g3HInsXKN","slug":"x402-broker-guard-endpoint-69acd2a0","name":"X402-BROKER Guard Endpoint","description":"Universal B2A/A2A/MCP Meta-Router & Autonomous Tool Marketplace indexing 7,340+ live capabilities across x402 v2 (5-chain EVM USDC), IETF MPP, and L402 with TDQS quality scoring and zero-fee pass-through execution.","url":"https://x402broker.com/v1/guard?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":{"text":{"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":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_g2_Rs0_mNQLN6hP4G-MMj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Routes a text query through the X402-BROKER meta-router, returning structured agent-ready data with ROI compression proof across 7,340+ indexed capabilities.","exampleAgentPrompt":"Search across all indexed MCP servers and x402 APIs for tools that can help me validate an email address, then return the best result — use the guard endpoint with a GET request and pass my query as text.","exampleUseCases":[{"title":"Universal tool discovery for agent","prompt":"I need to find and invoke the best available capability for checking whether a company is publicly listed on a US stock exchange — search across the full marketplace of MCP servers and x402 APIs and return the answer."},{"title":"Autonomous API routing for workflow","prompt":"My agent needs to automatically pick and call the right tool for JSON repair from the 7,000+ indexed capabilities in the x402 broker — route a GET query with the text 'fix broken JSON output' and return whatever the best match produces."},{"title":"Capability benchmarking via meta-router","prompt":"Can you query the x402 broker guard endpoint asking about DEX whale orderflow tools and tell me which live capability it routes to, along with the compression ratio proof it returns?"}],"resultDescription":"Returns a JSON object with a 'status' field ('ok'), a 'data' object containing the routed capability's response, and an 'roi_proof' object including a compression_ratio_pct value (e.g. 91.4%) indicating how efficiently the meta-router distilled the result.","failureModes":["Missing required 'input' object or 'type'/'method' fields returns a schema validation error","Payment failure or insufficient USDC balance results in 402 Payment Required response","No matching capability found for query text returns empty or null data object","Invalid HTTP method enum value (not GET or POST) causes request rejection","Upstream MCP server or x402 API unavailability may return partial or error data"],"whenToPreferThis":"Choose this endpoint when you need to dynamically discover and invoke one of thousands of live capabilities without knowing the specific API in advance — it acts as a universal meta-router. Prefer it over direct API calls when the right tool is unknown, when you want TDQS quality-scored routing, or when you need a single x402 micropayment interface to access MCP servers, A2A agents, and x402 APIs simultaneously.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T13:04:26.538Z","isFirstParty":false,"canonicalSlug":"x402-broker-guard-endpoint-69acd2a0"}