Jwt Tools Mcp

Lets an assistant decode and verify JSON Web Tokens locally, without network access or signing keys.

What you can do

This MCP server provides tools for working with JSON Web Tokens on the local machine. It can decode a JWT so its header and payload claims are readable, and it can verify a token's signature. According to the registry description, it works entirely offline and does not require a key.

When to use it

Useful when an assistant needs to inspect a JWT's contents or check whether a token's signature is valid during debugging, development, or troubleshooting. It is meant for local, offline token inspection rather than issuing or managing tokens.

Requirements

Runs as a local process on the user's machine, installed from the npm package jwt-tools-mcp over stdio. No environment variables, headers, accounts, or API keys are declared. Desktop only; not available as a web executable.