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 - [agents.md](https://github.com/agentsmd/agents.md) ![](https://img.shields.io/github/stars/agentsmd/agents.md.svg) - Markdown-based specification format for defining AI agent behaviors and capabilities.
 
+- [FPF](https://github.com/ailev/FPF) ![](https://img.shields.io/github/stars/ailev/FPF.svg) - First Principles Framework - Rigorous specification framework for modeling systems, methods, and knowledge with auditable assurance levels and machine-readable patterns.
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 ## Tools
 
 - [cc-sdd](https://github.com/gotalab/cc-sdd) ![](https://img.shields.io/github/stars/gotalab/cc-sdd.svg) - Collaborative spec-driven development tool for writing specifications alongside code.
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 - [OpenSpec](https://github.com/Fission-AI/OpenSpec) ![](https://img.shields.io/github/stars/Fission-AI/OpenSpec.svg) - Aligns developers and AI assistants on specifications before code is written.
 
+- [quint-code](https://github.com/m0n0x41d/quint-code) ![](https://img.shields.io/github/stars/m0n0x41d/quint-code.svg) - Structured reasoning framework for AI coding tools implementing hypothesis-driven spec development with automated design rationale records.
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 - [Shotgun](https://github.com/shotgun-sh/shotgun) ![](https://img.shields.io/github/stars/shotgun-sh/shotgun.svg) - Codebase-aware spec writing tool that keeps AI coding agents on track.
 
 - [Spec Kit](https://github.com/github/spec-kit) ![](https://img.shields.io/github/stars/github/spec-kit.svg) - Focuses developers on product scenarios and predictable outcomes over ad-hoc coding.