{"uid":"cap_4k91DbsnWMqarQaLNfvWb","slug":"jwt-decoder-api-2c73289e","name":"JWT Decoder API","description":"Decode a JWT token without signature verification","url":"https://jwt-decoder.api.klymax402.com/api/decode","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"token":{"type":"string","description":"The JWT token to decode (format: header.payload.signature)"}}},"responseSchema":null,"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_Qj54fnARWwOIar9LbXT6R","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":"Decodes a JWT token into its header and payload components without performing signature verification","exampleAgentPrompt":"Can you decode this JWT token for me and show me what's in the header and payload? eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c","exampleUseCases":null,"resultDescription":"Returns the decoded JWT broken into its constituent parts: the header (containing algorithm and token type), the payload (containing claims such as subject, issuer, expiration, and any custom fields), and optionally the raw signature component. Note: no signature verification is performed.","failureModes":["Malformed JWT (not in header.payload.signature format) returns an error","Missing token parameter returns a validation error","Token with invalid base64url encoding in header or payload returns a parse error","Empty string token returns an error"],"whenToPreferThis":"Use this endpoint when you need to quickly inspect the contents of a JWT token — such as reading claims, checking expiration, or examining the header — without needing to cryptographically verify the signature. Ideal for debugging, logging, or extracting metadata from tokens when the signing secret is unavailable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:32:47.352Z","isFirstParty":false}