# auth0/java-jwt

Java implementation of JSON Web Token (JWT)

Repository: https://github.com/auth0/java-jwt
Canonical: https://ross.abutalabs.com/products/java-jwt
Language: Java
License: MIT
License Family: permissive
Topics: dx-sdk, java, jwt
Last push: 2026-08-19T22:13:22+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 81, longevity 100
- inputs: {"age_days": 4562, "days_push": 14, "days_rel": 51, "gap_med": 74, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6235, forks 947 (observed 2026-08-28T04:09:40.798790+00:00)

## What it is
A Java library for creating and verifying JSON Web Tokens (JWT) per RFC 7519, supporting HMAC, RSA, and ECDSA signing algorithms. It is maintained by Auth0 and intended for server-side JVM applications.

## Use cases
- sign and verify JWTs in a Java application
- issue access tokens for a REST API
- validate bearer tokens in a Spring backend
- implement stateless authentication with HS256 or RS256
- decode and inspect JWT claims in JVM code

## When to choose
- you need a mature, well-maintained JWT library for server-side Java or Kotlin
- you need broad algorithm support including RSASSA-PSS and ECDSA
- you want an MIT-licensed library available on Maven Central

## When to avoid
- you are building an Android app (use JWTDecode.Android instead)
- you need ES256K (secp256k1) support, which has been dropped
- you need full JOSE/JWE encryption rather than just JWS signing

## Facets
- artifact type: library
- maturity: active
- function: auth, serialization, security
- domain: security, developer-tools, apis, web-development
- platform: jvm, serverless
- tags: jwt, jws, token-signing, token-verification, rfc-7519, jvm, web-server

## Member repositories
- auth0/java-jwt (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:40.798790+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:47:12.279487+00:00, confidence not recorded.
  - readme: https://github.com/auth0/java-jwt (fetched 2026-08-28T04:09:40.798790+00:00, sha 023c2c7a4dfc)
- Data as of 2026-08-30T08:39:29.467469+00:00.