Jwt Generator API

POST https://api.findutils.com/api/tools/jwt-generator/execute

Generate a signed JWT (HS256, HS384, or HS512 via HMAC) and return the token plus the decoded header and payload. The payload contains sub, name, iat, exp, and any custom claims. Asymmetric algorithms (RS*/ES*) are not supported.

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Request body

application/json

secret

string required

The HMAC secret used to sign the token.
algorithm

string optional

Signing algorithm. Default: HS256. One of HS256 · HS384 · HS512. Default "HS256".
subject

string optional

The "sub" claim. Default: "1234567890". Default "1234567890".
name

string optional

The "name" claim. Default: "John Doe". Default "John Doe".
expires_in

integer optional

Seconds until expiry; exp = iat + expires_in. Default: 3600. Default 3600.
custom_claims

object optional

Extra claims merged into the payload. An object, or a JSON object string.
issued_at

integer optional

Unix timestamp (seconds) for the "iat" claim. Default: now.

Example arguments

Verified

{
  "secret": "my-secret",
  "subject": "u1",
  "name": "Ann",
  "expires_in": 3600
}

curl -X POST https://api.findutils.com/api/tools/jwt-generator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "secret": "my-secret",
    "subject": "u1",
    "name": "Ann",
    "expires_in": 3600
  }'

const response = await fetch('https://api.findutils.com/api/tools/jwt-generator/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"secret":"my-secret","subject":"u1","name":"Ann","expires_in":3600}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/jwt-generator/execute",
    json={"secret":"my-secret","subject":"u1","name":"Ann","expires_in":3600},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/jwt-generator/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"secret":"my-secret","subject":"u1","name":"Ann","expires_in":3600}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call jwt_generator from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: None
REST id: jwt-generator
MCP name: jwt_generator
Category: Developer
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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