MCP For Claude Marketplace
JWT Claims Validator

JWT Claims Validator MCP Connector for Claude

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Validate JWT structure and expiration claims without signature verification.

1 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

The JWT Claims Validator MCP server provides a deterministic way to inspect JSON Web Tokens. It parses the payload using Base64Url decoding and checks critical claims like exp, nbf, and iat against the current time. This is ideal for pre-flight validation in AI workflows, ensuring tokens are not expired or not yet valid before attempting authenticated API calls. Use the validate_jwt tool to check if a token's structure is intact and its claims are currently active.

jwtsecurityauthvalidationtoken

1 tools expose this connector's capabilities to your AI agent.

validate_jwt

Validates the structure and expiration claims of a JWT

See how to talk to your AI agent using JWT Claims Validator.

Is this JWT token valid?

The token is valid. The expiration time is in the future, and all required claims are present.

Check if this JWT has expired: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...

The token is expired. The `exp` claim indicates it expired on January 1st, 2024.

Validate the structure of this token string.

The JWT structure is valid and contains a properly formatted header, payload, and signature segment.

No. This tool focuses on structural and claim-based validation (like expiration) without performing expensive cryptographic signature verification.

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