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OpenFGA Language

ANTLR Grammar for the OpenFGA DSL and parser from and to the OpenFGA JSON Syntax

About OpenFGA
Resources
Packages
About This Repo
CLI
Community Parsers
Contributing
License

About

OpenFGA is an open source Fine-Grained Authorization solution inspired by Google's Zanzibar paper. It was created by the FGA team at Auth0 based on Auth0 Fine-Grained Authorization (FGA), available under a permissive license (Apache-2) and welcomes community contributions.

OpenFGA is designed to make it easy for application builders to model their permission layer, and to add and integrate fine-grained authorization into their applications. OpenFGA’s design is optimized for reliability and low latency at a high scale.

Resources

Packages

Packages	Package Manager	Docs
JS		README
Go		README
Java		README

About This Repo

This repo contains everything needed to interact with the OpenFGA Authorization Models schema versions 1.1+, in multiple languages (currently, Go and JS are supported).

Feature	Implemented in ANTLR
Basic DSL	✅
Nesting	✅ (partial, see #113)
Conditions	✅

Feature	Go	JS	Java
Transformer from the DSL to JSON and from JSON to DSL	✅	✅	✅
Syntactic Model Validations	✅	✅	✅
Schema 1.0	❌	❌ (supported in v0.1.6 and below)	❌
Schema 1.1	✅	✅ (supported in v0.2.0 and above)	✅
Schema 1.2 (Modular Models)	✅	✅	✅
Semantic Model Validations	❌ (planned, see #99)	✅	✅
Graphing & Utility Methods	❌ (planned)	❌ (planned)	❌ (planned)

CLI

Use the FGA CLI

Community Parsers

Repo	License	Maintainers	Language	Schema v1.0	Schema v1.1	Package Managers	Other Links
openfga language (syntax-transformer)	Apache-2.0	@openfga	ANTLR (Go and Typescript implementations)	<0.1.5	Yes (v0.0.8+)	-
openfga-dsl-parser	Apache-2.0	@maxmindlin - @dblclik	Rust	Yes	No		WASM - Python
openfga-rs	Apache-2.0	@iammathew	Rust	Yes	No
openfga-dsl-parser	Apache-2.0	@craigpastro	ANTLR & Go	Yes	Partial (requires self). Supports nesting