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nomad/website/content/docs/secure/authentication/jwt.mdx
Aimee Ukasick 53b083b8c5 Docs: Nomad IA (#26063)
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Co-authored-by: Tu Nguyen <im2nguyen@gmail.com>
2025-07-08 19:24:52 -05:00

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---
layout: docs
page_title: JSON Web Token (JWT) Auth Method
description: >-
Use the JWT auth method to authenticate to Nomad with a JSON web token and receive an ACL token with privileges based on JWT identity attributes. Learn how to configure the auth method parameters using this reference page and example configuration.
---
# JSON Web Token (JWT) Auth Method
Use the `jwt` auth method to authenticate with Nomad by providing a
[JWT](https://en.wikipedia.org/wiki/JSON_Web_Token) directly. The JWT is
cryptographically verified using locally-provided keys, or, if configured, you may use an
OIDC Discovery service to fetch the appropriate keys.
Refer to [auth-method create] for the parameters required to create a JWT auth-method with a given verification method.
## JWT Verification
Nomad verifies JWT signatures against public keys from the issuer. This
process uses one of these methods:
- **Static Keys** - A set of public keys is stored directly in the
configuration.
- **JWKS** - Configure a JSON Web Key Set ([JWKS](https://tools.ietf.org/html/rfc7517))
URL and optional certificate chain. Nomad fetches keys from
this endpoint during authentication.
- **OIDC Discovery** - Configure an OIDC Discovery URL and optional certificate chain. Nomad fetches keys from this URL during authentication. When you use OIDC Discovery, Nomad applies OIDC validation criteria such as `iss` and `aud`.
If you need multiple methods, create another auth method of this type
with a different name.
@include 'jwt_claim_mapping_details.mdx'
[auth-method create]: /nomad/commands/acl/auth-method/create