{"uid":"cap_svq8JbhZkydOFgoT8ZJC6","slug":"pennyrail-jwt-decode-8914c620","name":"PennyRail JWT Decode","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/skill/jwt.toolkit--jwt-decode","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NGW0TzUbzHfi4sDUISGHl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Decodes a JWT (JSON Web Token) and returns its header, payload, and signature components without verification","exampleAgentPrompt":"Can you decode this JWT for me and show me what's in the payload: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c","exampleUseCases":[{"title":"Inspect access token expiration","prompt":"I have this access token from our auth server — can you decode it and tell me when it expires and who it belongs to? Here's the token: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzEyMyIsImV4cCI6MTcwMDAwMDAwMH0.abc123"},{"title":"Debug OAuth token claims","prompt":"Our OAuth flow is returning unexpected permissions — can you decode this JWT and list all the claims inside it so I can see what scopes and roles are being set? Token: eyJhbGciOiJIUzI1NiJ9.eyJyb2xlIjoiYWRtaW4iLCJzY29wZXMiOlsicmVhZCIsIndyaXRlIl19.xyz789"},{"title":"Extract user identity from session token","prompt":"I need to know the user ID and email stored in this session JWT without making a database call — can you pull that info out of the token? eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiI0MiIsImVtYWlsIjoidGVzdEB0ZXN0LmNvbSJ9.signature"}],"resultDescription":"Returns the decoded JWT broken into its three components: the header object (containing algorithm and token type), the payload object (containing all claims such as sub, iat, exp, iss, and any custom fields), and the raw signature string — all without performing cryptographic signature verification.","failureModes":["Malformed or non-JWT string input returns an error response","Missing 'input' field or empty object causes validation failure","Token with non-standard encoding may fail to parse","Payment failure (402) if USDC balance is insufficient","Network timeout on the Vercel serverless function cold start"],"whenToPreferThis":"Choose this endpoint when you need to quickly inspect the contents of a JWT without implementing base64url decoding yourself, when debugging authentication flows to see what claims a token carries, or when you need to extract fields like expiration time or user identity from a token in an automated pipeline. It is not a verification service — if you need to validate the token signature, use a dedicated JWT verification endpoint instead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:53.559Z","isFirstParty":false}