{"uid":"cap_yY7TQVPOhRsebrJuYrinc","slug":"mm-agent-utils-x402-endpoint-linter-3cd25bc9","name":"mm-agent-utils x402 Endpoint Linter","description":"Tiny pay-per-call utilities for agents on Base: wallet vetting, x402 endpoint linting, deterministic entity extraction.","url":"https://mm-agent-utils.gferrigno.deno.net/v1/x402-check?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"],"type":"string"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"https URL of the x402 endpoint to lint"},"method":{"type":"string","description":"GET (default) or POST"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"url":"https://example.com/paid-endpoint","offers":[{"pay_to":"0x...","network":"eip155:8453","price_usdc":"0.01","asset_symbol":"USDC"}],"verdict":"ok","warnings":[],"http_status":402,"x402_version":2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_GIsRbQaSfGhOJTHa9s1Ui","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Lints and validates an x402-enabled HTTP endpoint, checking its payment offers, compliance, and configuration correctness.","exampleAgentPrompt":"Can you lint my x402 endpoint at https://my-api.example.com/paid-data and tell me if the payment offers and configuration look correct?","exampleUseCases":[{"title":"Pre-launch x402 compliance check","prompt":"Before I go live, can you check my x402 endpoint at https://api.myservice.com/premium-data and tell me if there are any warnings or misconfigurations I should fix?"},{"title":"Debugging a broken pay-per-call API","prompt":"My x402 endpoint at https://tools.acme.dev/v1/report isn't accepting payments properly — can you lint it and show me what the verdict is and what offers it exposes?"},{"title":"Auditing a third-party paid endpoint","prompt":"I want to use this paid API at https://data.provider.io/endpoint but I'm not sure it's legit — can you inspect its x402 payment offers and tell me the pay-to address, network, and price?"}],"resultDescription":"Returns a JSON object containing the linted endpoint URL, an array of payment offers (each with pay_to address, network, USDC price, and asset symbol), a verdict ('ok' or error), any warnings, the HTTP status code, and the x402 protocol version detected.","failureModes":["Target URL is not reachable or times out","Target URL does not return a 402 status (not an x402 endpoint)","Malformed or missing x402 payment headers result in warnings or error verdict","Non-HTTPS URLs rejected by input schema","Invalid or missing 'url' query parameter returns validation error"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify that a specific URL is a correctly configured x402 pay-per-call endpoint — especially before integrating it into an agent workflow, debugging payment failures, or auditing third-party x402 APIs for correctness. Prefer it over manual inspection when you need structured output including offer details, warnings, and a machine-readable verdict.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:32:26.192Z","isFirstParty":false,"canonicalSlug":"mm-agent-utils-x402-endpoint-linter-3cd25bc9"}