About Bearer Token Builder

Wrap a raw token in HTTP Authorization + curl + fetch snippets. Part of the DevTools Surf developer suite. Browse more tools in the Networking collection.

Use Cases

• Frontend devs building authenticated fetch calls from JWTs
• API testers generating curl commands for protected endpoints
• Mobile developers setting up token-based API integrations
• DevOps engineers scripting authenticated health check requests

Tips

• Paste a raw JWT or API token to get ready-made snippets
• Output includes curl, fetch, and raw header formats
• Use the curl snippet to test authenticated endpoints quickly

Fun Facts

• Bearer tokens were standardized in RFC 6750 (2012) as part of the OAuth 2.0 framework, replacing the more complex OAuth 1.0 signature-based authentication.
• The word 'Bearer' in the header means 'whoever bears this token gets access' — similar to a bearer bond in finance, possession alone grants authority.
• JSON Web Tokens (JWTs), the most common bearer token format, consist of exactly three base64url-encoded segments separated by dots — header, payload, and signature.

FAQ

What's the difference from Basic auth?

Bearer uses a token (often a JWT or opaque string), not user:password. The token proves identity; the server validates it. No password in the header.

When do I use Bearer?

Modern APIs — REST, GraphQL, gRPC via grpc-web. Almost universal in 2020s API design.

Does the tool validate my token?

No — it wraps it in header syntax and generates curl/fetch snippets. To validate a JWT, use the JWT Decoder.

What if my API uses a different scheme name?

Some use `Token`, `JWT`, or custom names instead of `Bearer`. Toggle the scheme field to match your API's expectation.