ToolypetMCP
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Generate JWT & Validate

Generate a JWT token with custom claims, decode it to verify structure, and check expiration timestamps.

jwtvalidationsecuritydev

何时使用此配方

Verify your JWT generation pipeline end-to-end before deploying to production. Catches issues like wrong algorithm, missing claims, or incorrect expiration.

步骤

1

Secret Generator

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Create the signing secret

提示词:Generate a 256-bit hex secret for JWT signing
2

JWT Generator

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Create a signed JWT

提示词:Generate a JWT with payload {sub: 'user-42', role: 'editor', plan: 'pro'} using HS256, expires in 24 hours
3

Validate token structure

提示词:Decode the generated JWT and verify header algorithm matches HS256 and payload claims are correct
4

Timestamp Converter

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Verify expiration timing

提示词:Convert the JWT exp and iat claims to human-readable dates to confirm expiration window

常见问题

Why validate JWTs after generation?

Catches encoding bugs, wrong algorithms, and missing claims before they reach production. A malformed JWT causes silent auth failures that are hard to debug.

What claims should every JWT have?

At minimum: sub (subject), iat (issued at), exp (expiration). Add iss (issuer) and aud (audience) for multi-service architectures.

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