lcobucci/jwt
This system is a PHP library for creating, parsing, and validating JSON Web Tokens (JWTs). It provides a structured API for building tokens with various cryptographic signers, including HMAC, RSA, ECDSA, EdDSA, and Blake2b. The library enforces strict validation of claims, signatures, and time-based constraints, while offering immutable token and builder classes to ensure predictable behavior.
62.5
Adequate · 2 August 2026
2.7k
lines of production code
PHP
primary language
2
bus factor · 82 authors in all
3
measurements over time
How it got here
2014–2015 · JWT library architecture and cryptographic expansion
The project established a robust foundation for a JWT library, introducing a new immutable Builder and Facade architecture to separate token creation from validation. This period also significantly expanded cryptographic support by adding dedicated signer implementations for HMAC, RSA, and ECDSA algorithms, alongside comprehensive configuration and development tooling.
7 changes
2017–2022 · Immutable token model and validation API
This period focused on refactoring the core token handling to use immutable classes and introducing a comprehensive, constraint-based validation API. The changes also included significant improvements to encoding, key management, and error handling, supported by extensive new test coverage for all signing algorithms and validation constraints.
14 changes
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About this page
- The description of this project is derived from its own commit history, not from its README.
- The score is its highest published measurement, taken on 2 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
- Measured at commit 32bf67121b — the exact code this score is about.
- Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.