NyxFoundation/nyxis
A Lean backend framework whose authorization safety is formally proven. The developer writes only a Cedar schema and policies; handlers are built on Supabase Auth and PostgreSQL.
From the publisher
README & documentation
Source previewRead the project’s overview, installation instructions and usage examples. The original README is the source of truth.
English | 日本語 [](LICENSE) [](https://github.com/NyxFoundation/nyxis) [](ASSUMPTIONS.md) [](lean-toolchain) [](https://www.cedarpolicy.com/) [](ASSUMPTIONS.md) [](https://supabase.com/) [](https://supabase.com/auth) [](https://github.com/NyxFoundation/nyxis) A Lean backend framework whose authorization safety is formally proven. Nyxis lets solo developers who ship web applications written by AI agents release them with confidence about authorization. The only things a developer writes and approves are a Cedar schema and policies. Handlers can be written as usual by Claude Code or similar tools, and the developer never has to write Lean. Every backend built on Nyxis comes with a formal proof of the following: The Lean kernel checks this property on every lake build. Reviewing and auditing authorization comes down to reading the schema and policies and confirming that the proof checks. An example schema (from the official bulletin-board sample): An example policy: Besides read, list, insert, update (with an explicit column list), and delete, effects include file storage via signed URLs, email notifications, and external API…
Read the full README ↗ · Preview checked 2026-10-27T13:19:23.133Z
Inside the original README — Document outline
- Nyxis
- How it works
- Requirements
- Build
- Using Nyxis in your application
- Official samples
- Repository layout
- Documentation
- License
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What this repository does
A Lean backend framework whose authorization safety is formally proven. The developer writes only a Cedar schema and policies; handlers are built on Supabase Auth and PostgreSQL.
Repository facts
- Owner
- NyxFoundation
- Primary language
- Lean
- Stars
- 314
- Forks
- 13
- Open issues + pull requests
- 15
- License
- MIT
- Archived
- No
- Default branch
- main
- Created
- 2026-10-26T04:26:18.000Z
- Last push
- 2026-10-31T03:35:42.000Z
Topics and intended use
Owner-supplied topics: access-control, authorization, backend-framework, cedar, formal-verification, lean4, postgresql, security, supabase
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