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Decode jwt

An MCP tool from the Developer Toolbox server, hosted on mcp.hjlabs.in.

Decode a JWT's header and payload and render its time claims as dates. DOES NOT verify the signature — verification needs the issuer key, which this service never holds. The output says so explicitly.

Name on the gateway: devtools__decode_jwt · read-only.

Parameters

NameTypeDescription
token requiredstringThe JWT, in its three-segment compact form.

How to call it

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments
{
  "name": "devtools__decode_jwt",
  "arguments": {
    "token": "…"
  }
}

Or connect the Developer Toolbox server directly, which lists 18 tools including this one:

Run in your terminal
claude mcp add --transport http hj-devtools https://mcp.hjlabs.in/mcp/devtools \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the decode jwt tool with token set to ….

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