{"uid":"cap_xGFdw17Bqf1ZvKue_ZSfC","slug":"jwt-decode-tool-x402-usdc-micropayment-7dd7c84f","name":"JWT Decode Tool (x402 USDC Micropayment)","description":"Decode a JWT header and payload without verifying the signature and without calling an upstream model. Pay up to $0.001 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.","url":"https://gpt55.558686.xyz/v1/tools/jwt-decode","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","additionalProperties":true},"queryParams":{"type":"object","required":["token"],"properties":{"token":{"type":"string","maxLength":20000,"minLength":1}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"ok":{"type":"boolean"},"tool":{"type":"string"},"fetchedAt":{"type":"string"}},"additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.0001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_G-T3QdTna0t4aBBqIpvtg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Decodes a JWT token's header and payload, returning structured claims, paid via x402 USDC micropayment on Base.","exampleAgentPrompt":"Can you decode this JWT for me and show me what's in the header and payload? Token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c","exampleUseCases":null,"resultDescription":"Returns a JSON object with ok (boolean), tool name ('jwtDecode'), the decoded JWT header and payload as parsed JSON fields, and a fetchedAt timestamp indicating when the decode occurred.","failureModes":["Missing or empty 'token' query parameter returns an error","Malformed JWT string (not three base64 segments) returns a decode error","Token too long (exceeds 20000 chars) is rejected by schema validation","Network or payment failure via x402 protocol causes request to fail","Invalid USDC payment on Base results in 402 payment required response"],"whenToPreferThis":"Use this endpoint when you need a quick, low-cost ($0.0001 USDC) way to decode and inspect JWT token contents without a subscription, especially in an x402-enabled micropayment workflow on Base. Prefer it over local JWT libraries when operating in agent environments that already support x402 payments and need a simple HTTP call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:41:54.695Z","isFirstParty":false}