# OpenSpec | Fission | Knowledge Base | Instagit

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

GitHub Stars: 57.4k

Repository: https://github.com/Fission-AI/OpenSpec

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## Articles

### [How to Set Up a Development Environment for OpenSpec: Complete Setup Guide](/Fission-AI/OpenSpec/how-to-set-up-a-development-environment-for-openspec)

Quickly set up your OpenSpec development environment. Follow this guide to install Node.js and pnpm, clone the repository, and build OpenSpec for local development.

- Tags: getting-started
- Published: 2026-06-28

### [The Difference Between OpenSpec and Similar Projects: A Technical Comparison](/Fission-AI/OpenSpec/what-is-the-difference-between-openspec-and-similar-projects)

Discover how OpenSpec's artifact guided workflow and language agnostic CLI differ from Spec Kit, Kiro, and ad-hoc development for AI projects.

- Tags: comparison
- Published: 2026-06-28

### [OpenSpec Community Support: Channels for Help, Discussion, and Contribution](/Fission-AI/OpenSpec/what-kind-of-community-support-is-available-for-openspec)

Explore OpenSpec community support options. Get help on Discord, report bugs via GitHub Issues, and contribute directly through pull requests. Find answers and engage with the OpenSpec community.

- Tags: getting-started
- Published: 2026-06-28

### [How to Report a Bug or Issue in OpenSpec: 3 Methods Explained](/Fission-AI/OpenSpec/how-can-i-report-a-bug-or-issue-in-openspec)

Discover three simple methods to report a bug or issue in OpenSpec. Learn to use GitHub Issues, Discord, and the openspec feedback CLI for efficient bug reporting with Fission-AI/OpenSpec.

- Tags: how-to-guide
- Published: 2026-06-28

### [OpenSpec Future Development Plans: The Complete Phase-by-Phase Roadmap](/Fission-AI/OpenSpec/what-are-the-future-development-plans-for-openspec)

Explore the OpenSpec future development plans with its structured eight-phase roadmap. Discover standalone stores, reference linking, and personal worksets as OpenSpec evolves to production.

- Tags: roadmap
- Published: 2026-06-28

### [Which Pre-trained Models Are Available for OpenSpec? A Complete Configuration Guide](/Fission-AI/OpenSpec/are-there-any-pre-trained-models-available-for-openspec)

Explore pre-trained models for OpenSpec like Codex 5.5, Opus 4.7, Claude Code, and Gemini CLI. Get a complete configuration guide for seamless integration with Fission-AI OpenSpec.

- Tags: getting-started
- Published: 2026-06-28

### [What Kind of Datasets Does OpenSpec Work With?](/Fission-AI/OpenSpec/what-kind-of-datasets-does-openspec-work-with)

OpenSpec handles diverse datasets like JSON, CSV, databases, code, and binaries. Use Markdown specs to integrate any data with OpenSpec.

- Tags: tutorial
- Published: 2026-06-28

### [How to Integrate OpenSpec with Other AI Coding Tools](/Fission-AI/OpenSpec/how-can-i-integrate-openspec-with-other-tools)

Learn how to integrate OpenSpec with AI coding tools using its declarative plugin architecture. Generate skill and command files effortlessly for seamless workflow enhancement.

- Tags: how-to-guide
- Published: 2026-06-28

### [OpenSpec Licensing Details: MIT License Terms and Usage Guide](/Fission-AI/OpenSpec/what-are-the-licensing-details-for-openspec)

Explore OpenSpec licensing details under the MIT License. Understand terms for commercial use, modification, and distribution of this permissive open-source software.

- Tags: licensing-guide
- Published: 2026-06-28

### [How OpenSpec Ensures Data Privacy and Security: A Technical Deep Dive](/Fission-AI/OpenSpec/how-does-openspec-ensure-data-privacy-and-security)

Discover how OpenSpec ensures data privacy and security with its privacy-first architecture, anonymous data collection, opt-out controls, and CI detection. Learn more about Fission-AI/OpenSpec.

- Tags: deep-dive
- Published: 2026-06-28

### [OpenSpec Architecture: File-System Store and Spec-Driven Development Engine](/Fission-AI/OpenSpec/what-is-the-architecture-of-openspec)

Discover the OpenSpec architecture, a spec-driven development platform featuring a file-system store and TypeScript engine for AI-assisted workflows.

- Tags: architecture
- Published: 2026-06-28

### [OpenSpec Demo: A Complete Walkthrough of the Spec-First Workflow](/Fission-AI/OpenSpec/is-there-a-demo-or-example-of-openspec-in-action)

Explore the OpenSpec demo and master spec-first workflow. See how to propose features and manage implementations using slash commands from start to archive.

- Tags: tutorial
- Published: 2026-06-28

### [9 Practical Use Cases for OpenSpec: From Ideation to Production](/Fission-AI/OpenSpec/what-are-the-use-cases-for-openspec)

Explore 9 practical use cases for OpenSpec, the spec-driven framework that streamlines AI code generation from ideation to production. Improve developer-AI collaboration.

- Tags: use-cases
- Published: 2026-06-28

### [How the Performance of OpenSpec Is Evaluated: Benchmarking and Caching Strategy](/Fission-AI/OpenSpec/how-is-the-performance-of-openspec-evaluated)

Discover how OpenSpec evaluates performance via automated benchmarks and an mtime-based cache. Learn about latency targets for configuration read times.

- Tags: performance
- Published: 2026-06-28

### [OpenSpec Dependencies: Complete Runtime Requirements Guide](/Fission-AI/OpenSpec/what-are-the-dependencies-for-running-openspec)

Discover OpenSpec dependencies and runtime requirements. Learn about essential Node.js packages like Commander, Inquirer, and Zod needed to run OpenSpec, detailed in package.json.

- Tags: runtime-requirements-guide
- Published: 2026-06-28

### [Technical Specifications of OpenSpec: Architecture and Workflow Guide](/Fission-AI/OpenSpec/what-are-the-technical-specifications-of-openspec)

Explore OpenSpec technical specifications. Discover its Node.js architecture, delta specs, artifact workflows, and AI integration for efficient change management from proposal to archive.

- Tags: architecture
- Published: 2026-06-28

### [How OpenSpec Handles Data Analysis: Discovery, Validation, and Synthesis](/Fission-AI/OpenSpec/how-does-openspec-handle-data-analysis)

Discover how OpenSpec analyzes specs as data using a three-stage pipeline: discovery, Zod validation, and synthesis. Validate changes and merge them efficiently.

- Tags: how-to-guide
- Published: 2026-06-28

### [How to Understand the OpenSpec Project: Architecture, Workflow, and Implementation Guide](/Fission-AI/OpenSpec/how-can-i-understand-the-openspec-project-better)

Understand the OpenSpec project with this guide covering its AI-native architecture, workflow, and implementation. Learn how OpenSpec streamlines developer and AI assistant collaboration.

- Tags: architecture
- Published: 2026-06-28

### [What is Fission-AI OpenSpec? A Spec-First AI Coding Framework](/Fission-AI/OpenSpec/what-is-fissions-openspec-project)

Discover Fission-AI OpenSpec, the spec-first AI coding framework. This agreement layer uses Markdown for planning, ensuring better code generation from AI assistants. Learn more.

- Tags: getting-started
- Published: 2026-06-28