Fission-AI/OpenSpec
Spec-driven development (SDD) for AI coding assistants.
⚡ Executive Summary & Quick Facts
Authoritative SourceOpenSpec is OpenSpec is an open-source project written in TypeScript: Spec-driven development (SDD) for AI coding assistants..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), Fission-AI/OpenSpec has accumulated 74,536 GitHub stars and 5,108 forks. It is written in TypeScript, licensed under MIT, and ranks #163 globally. It is actively maintained with the latest commit recorded on Nov 10, 2026.”
| Repository | Fission-AI/OpenSpec ↗ |
|---|---|
| Primary Category | ai |
| Language & Stack | TypeScript |
| Software License | MIT |
| Community Traction | ★ 74.5K stars · ⑂ 5.1K forks · #163 globally |
| Maintenance | ● Active (Last commit: Nov 10, 2026) · 201 open issues |
| Target Audience | Developers and engineering teams building with TypeScript, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 100/100 · Grade A+Yes, OpenSpec is actively maintained. Continuous telemetry recorded the last code commit on Nov 10, 2026 (2 days ago). Supported by 74,536 stars and 5,108 community forks, this repository holds a calculated health index of 100/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
Add Live Star History & Verified Badges to README.md
Keep your repository README looking professional and dynamic. As our continuous crawler records new stars, these official SVG badges update in real time with zero maintenance.
Renders your high-resolution star trajectory chart right inside your GitHub README or project docs.
[](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_chart)Compact badges for your README header. Real-time stars, velocity, health audit, and rank.
[](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_badge) [](https://githubrepo.cloud/repo/Fission-AI/OpenSpec?utm_source=readme_badge)Momentum
+3.7K
STARS · LAST 30 DAYS
124
PER DAY
#44
MOST-STARRED TypeScript
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +2K | +3.7K | +11.2K |
| Per day | 283 | 124 | 124 |
| Forks gained | +155 | +247 | +255 |
OpenSpec gained 3.7K stars in the last 30 days, about 124 a day, and now has 74.5K. It is about 1 year old and has averaged roughly 74.5K stars a year. It ranks #44 among TypeScript repositories and #163 across all languages on GitHubRepo.
Trending Record
46
DAYS ON TRENDING
#43
BEST RANK
Sep 23, 2026
FIRST APPEARANCE
Active
STATUS TODAY
OpenSpec has maintained a continuous presence across global trending indexes, peaking at #43. Below is the 30-day activity profile:
💡 Overview
OpenSpec is an open-source project written in TypeScript: Spec-driven development (SDD) for AI coding assistants.
Engineered for speed, consistency, and developer ease, it solves common hurdles in ai, context-engineering, engineering. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in TypeScript for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ npm install OpenSpec⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Node.js >= 18, npm, pnpm or bun
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
OpenSpec coordinates its core functionality through a modular TypeScript pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Autonomous AI Agents
Orchestrate intelligent workflows and tool-calling routines with OpenSpec.
Model Inference & Prompting
Integrate fast, local or cloud-hosted generative AI models directly into production code.
Context Memory & RAG
Augment language models with dynamic vector retrieval and structured project memory.
Developer Productivity
Automate repetitive engineering tasks, code generation, and test creation using AI agents.
🚀 Getting Started
Install OpenSpec using your package manager: `npm install OpenSpec`
Initialize your project workspace or configuration file for OpenSpec.
Import OpenSpec into your codebase or invoke it directly from your terminal.
Execute your test suite or run `OpenSpec --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with TypeScript, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
Fission-AI/OpenSpec is currently ranked #163 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #158 | hiyouga/LlamaFactory | Python | ★ 75.8K | Compare ↗ |
| #159 | apache/superset | Python | ★ 75.5K | Compare ↗ |
| #160 | Eugeny/tabby | TypeScript | ★ 75.2K | Compare ↗ |
| #161 | pallets/flask | Python | ★ 75.1K | Compare ↗ |
| #162 | danielmiessler/SecLists | PHP | ★ 74.7K | Compare ↗ |
| #163 | Fission-AI/OpenSpec This Project | TypeScript | ★ 74.5K | |
| #164 | calesthio/OpenMontage | Python | ★ 73.8K | Compare ↗ |
| #165 | unionlabs/union | Rust | ★ 73.7K | Compare ↗ |
| #166 | nektos/act | Go | ★ 72.5K | Compare ↗ |
| #167 | moby/moby | Go | ★ 72.3K | Compare ↗ |
| #168 | cline/cline | TypeScript | ★ 71.5K | Compare ↗ |
Frequently Asked Questions
What does OpenSpec do? +
Spec-driven development (SDD) for AI coding assistants.
Is OpenSpec actively maintained in 2026? +
Yes, OpenSpec is actively maintained. The latest code push was recorded on Nov 10, 2026 (2 days ago). It holds a calculated Maintenance Health Score of 100/100 (A+ rating) with 74,536 stars and 201 open issues.
What language is OpenSpec written in? +
The primary language is TypeScript. Topics include: ai, context-engineering, engineering, planning, prd.
How many stars does OpenSpec have? +
OpenSpec has 74,536 stars and 5,108 forks on GitHub.
How does OpenSpec rank among GitHub repositories? +
With 74,536 stars, Fission-AI/OpenSpec is ranked #163 globally across all repositories tracked on GitHubRepo and #44 among TypeScript projects.
What license is OpenSpec distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
