JWT to Fetch

Build JavaScript fetch() calls that send a Bearer JWT

OAuth 2.0 and OpenID Connect clients receive access tokens as JSON Web Tokens. When debugging an API from the browser console or a Node script, you need a fetch call with an Authorization: Bearer header, the correct HTTP method, and optional JSON body. Paste your token, URL, and payload here to get a ready-to-run snippet with error handling stubs.

What the snippet includes

1. Authorization header with your JWT (template literal safe escaping).
2. Accept: application/json for typical REST APIs.
3. Optional credentials: "include" when cookies must ride along.
4. Response parsing as JSON or plain text, plus a status check that throws on non-OK responses.

Decode claims or verify signatures first with the JWT Decoder & Verifier and JWT Claims Validator. For RSA-signed tokens, use JWT Builder RSA ES.