{"uid":"cap_vRyHvPU8Ufna8BWiqFesF","slug":"nexusapi-jwt-encode-1fbfefc8","name":"NexusAPI JWT Encode","description":"Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.","url":"https://nexus-api-virid.vercel.app/api/tools/jwt/encode","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"Search query or input parameter"}}},"responseSchema":{"type":"object","description":"API response data"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.138574","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":"$0.138574/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.138574","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.138574","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Tjl7ZkurNRdNsk2oaiMXp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.138574","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Encodes a payload into a signed JSON Web Token (JWT)","exampleAgentPrompt":"Can you encode this payload into a JWT token: {\"userId\": \"abc123\", \"role\": \"admin\", \"exp\": 1718000000}?","exampleUseCases":[{"title":"Generate API authentication token","prompt":"I need to create a signed JWT token from this payload — {\"sub\": \"user_42\", \"role\": \"editor\", \"exp\": 1720000000} — so I can use it to authenticate requests to my backend API."},{"title":"Issue session token for web app","prompt":"Encode a JWT for a logged-in user session with these claims: userId is 'u_789', email is 'jane@example.com', and it should expire in an hour from now."},{"title":"Create service-to-service auth token","prompt":"I need to generate a JWT token to authenticate my microservice calls — the payload should include {\"service\": \"billing\", \"env\": \"production\", \"iat\": 1717900000}."}],"resultDescription":"Returns a signed JWT string (three dot-separated Base64URL-encoded segments: header, payload, signature) that can be used as a bearer token or passed to a JWT decode/verify endpoint.","failureModes":["Invalid or malformed payload JSON causes encoding failure","Missing required claims may result in an incomplete token","Unsupported algorithm specified returns an error","Overly large payload may be rejected","Network timeout or server error returns a 5xx response"],"whenToPreferThis":"Use this endpoint when you need a quick, no-setup JWT encoding capability without managing your own JWT library or secret rotation. It's ideal for AI agents that need to issue tokens on the fly as part of an automated workflow, especially when paying per call via USDC on Base is acceptable. Prefer it over rolling your own JWT signing when you need a stateless, API-accessible encoding step in a pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:41:26.574Z","isFirstParty":false}