# Fission-AI/OpenSpec

<https://repo.masters-masters.com/en/repos/Fission-AI/OpenSpec>

[Home](https://repo.masters-masters.com/en) › [Fission-AI](https://repo.masters-masters.com/en/owners/Fission-AI) › [OpenSpec](https://repo.masters-masters.com/en/repos/Fission-AI/OpenSpec)

Fission-AI/OpenSpec has 73,637 stars on GitHub. Its RepoMasters card: LTS tier. Spec-driven development (SDD) for AI coding assistants. Language: TypeScript.

| Field | Value |
| --- | --- |
| Owner | [Fission-AI](https://repo.masters-masters.com/en/owners/Fission-AI) |
| Stars | 73,637 |
| Forks | 5,041 |
| Language | [TypeScript](https://repo.masters-masters.com/en/languages/typescript) |
| License | MIT |
| Created | 2025 |
| Topics | spec, ai, context-engineering, engineering, planning, prd, sdlc, spec-driven-development, specification, sdd |
| Tier | [LTS (20,000 ★ and up)](https://repo.masters-masters.com/en/ranks/masterpiece) |
| View on GitHub | [Fission-AI/OpenSpec](https://github.com/Fission-AI/OpenSpec) |

## Repository

Spec-driven development (SDD) for AI coding assistants.

The tier for repos with 20,000 ★ and up. Published odds per card pulled: 0.1%. Rarity: Legendary.

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Data: GitHub · Illustration drawn by RepoMasters from the repo’s ID and its language color.