JWT Decoder

Decode a JWT token and extract header, payload, and claims (no signature verification)

POST


                    api/v1/decode-jwt

Decode a JWT token and extract header, payload, and claims (no signature verification)

Rate Limiting

Standard rate limits apply to this endpoint.

Authentication

This endpoint requires authentication via API key. You can use the sandbox mode for testing without registering. See the authentication guide for details.

Query Parameters

Parameter	Type	Required	Description
`token`	string	Required	The token parameter

Response details for this API endpoint. See the response format guide for the standard response structure.

Example Response

{
    "status": "success",
    "http_code": 200,
    "code": "SUCCESS",
    "message": "JWT decoded successfully (signature NOT verified)",
    "data": {
        "header": {
            "alg": "HS256",
            "typ": "JWT"
        },
        "payload": {
            "sub": "1234567890",
            "name": "John Doe",
            "iat": 1516239022
        },
        "signature": "SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c",
        "decoded_at": "2025-05-19T12:00:00+00:00"
    }
}

Example Usage

Here's how to use this endpoint in various languages. For more examples, see our code examples page.

cURL

curl -X POST \
    "https://apixies.io/api/v1/decode-jwt" \
    -H "X-API-Key: YOUR_API_KEY"

JavaScript

fetch("https://apixies.io/api/v1/decode-jwt", {
    method: "POST",
    headers: {
        "Content-Type": "application/json",
        "X-API-Key": "YOUR_API_KEY"
    }
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error("Error:", error));

PHP

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://apixies.io/api/v1/decode-jwt");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "X-API-Key: YOUR_API_KEY"
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;

Try It Yourself

Test this endpoint directly from your browser using our API sandbox. No authentication required for testing.

Try API Endpoint

This is a limited sandbox environment.

For higher limits (75 requests/day), register for a free account.

API Endpoint

/

Sandbox API Usage Get full API access

No token information available

Sandbox (no account): 50 requests per token, 1 token per day, 24-hour expiry

Your session has expired. A new token will be created automatically.

Your daily Sandbox API quota has been exhausted. Please try again tomorrow.

Need higher limits? Register for free and get 75 requests/day.

Unable to validate your API token.

Response

Send a request to see the response

Common Use Cases

Debug authentication flows

Quickly inspect JWT tokens during development to verify claims, expiration times, and payload structure without writing custom parsing code.

Security audit logging

Decode and log JWT claims in your API gateway for audit trails. Extract user IDs, roles, and permissions from tokens passing through your system.

Token validation in pipelines

Integrate JWT decoding into CI/CD pipelines to verify that test tokens have the correct structure and claims before running integration tests.

Related API Endpoints

Explore related endpoints that work well with JWT Decoder.

POST Base64 Encode/Decode

Encode or decode Base64 strings

POST Hash Generator

Generate a cryptographic hash (MD5, SHA1, SHA256, SHA512, etc.) from input text

POST JSON Schema Validator

Validate JSON data against a JSON Schema definition

Getting Started

Explore

Resources

Get Started Free

Free for development and small projects.

Get Free API Key

Share Your Feedback

Suggest a micro‑API