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What you can do with Open Spec

OpenSpec is a spec-driven development framework, installed as a CLI, that gives AI coding assistants a lightweight Markdown spec layer so humans and agents agree on what to build before code is written.

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Fission-AI/OpenSpec on GitHub

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What do you want to do?

3 use cases

  • Plan a feature with an AI before any code is written

    Explore, propose, apply, and archive one change so the agent builds only what you agreed to.

    View prompt
    Using the OpenSpec repo at Fission-AI/OpenSpec, set up OpenSpec in <project-path> by running the install and `openspec init` steps, then use /opsx:explore and /opsx:propose <change-name> to create a change folder. Expected output: openspec/changes/<change-name>/ containing proposal.md, specs/, design.md, and tasks.md. Verify that the tasks file exists and summarize it for human review before running /opsx:apply.

  • Switch to the expanded workflow and archive many changes at once

    Enable the full set of Open Spec commands and clear finished changes in one pass.

    View prompt
    In the Fission-AI/OpenSpec project at <project-path>, select the expanded workflow with `openspec config profile`, then run `openspec update`. Expected output: the new commands such as /opsx:verify and /opsx:bulk-archive are listed as active for your assistant. Verify that openspec/changes/ lists the finished changes before running /opsx:bulk-archive.

  • Share one plan across several repos with Stores

    Keep cross-repo specs in a separate shared repo that code repos and agents can read.

    View prompt
    Using the Stores guide at openspec.dev/docs/stores for Fission-AI/OpenSpec, set up a planning repo at <store-path> with the openspec/ shape of specs and changes. Expected output: a committed store containing one cross-repo change folder. Verify that the change folder is present and pushed with git before any code repo is modified.

How to use Open Spec

  1. Check you have what it needs: Node.js 20.19.0 or higher, or Homebrew on macOS or Linux; A project directory you want to use OpenSpec in; An AI coding assistant that OpenSpec supports (30+ tools listed in the docs).
  2. Open Fission-AI/OpenSpec on GitHub and read the README and license.
  3. Run npm install -g @fission-ai/openspec@latest
  4. Run cd your-project and then openspec init
  5. In your AI assistant, run /opsx:explore to shape the idea, then /opsx:propose add-dark-mode to create the change folder
  6. Review proposal.md, the specs folder, design.md, and tasks.md before any code is written

These steps come from our top use case, Plan a feature with an AI before any code is written, which also has a copy-paste agent prompt.

Open Spec alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forDevelopers and small teams using AI coding assistants on a repo who want plans and requirements agreed before the agent writes code.
  • Why it is hot
  • LanguageTypeScript
  • Sourcegithub.com/Fission-AI/OpenSpec · Back to Hot repos

Requirements

  • Node.js 20.19.0 or higher, or Homebrew on macOS or Linux
  • A project directory you want to use OpenSpec in
  • An AI coding assistant that OpenSpec supports (30+ tools listed in the docs)
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Questions about Open Spec

What is Open Spec?

OpenSpec is a spec-driven development framework, installed as a CLI, that gives AI coding assistants a lightweight Markdown spec layer so humans and agents agree on what to build before code is written. It is an open-source project on GitHub: https://github.com/Fission-AI/OpenSpec.

Who is Open Spec for?

Developers and small teams using AI coding assistants on a repo who want plans and requirements agreed before the agent writes code.

What can I do with Open Spec?

3 use cases so far, for example: Plan a feature with an AI before any code is written; Switch to the expanded workflow and archive many changes at once; Share one plan across several repos with Stores. Each has steps and a copy-paste agent prompt.

What do I need to run Open Spec?

Node.js 20.19.0 or higher, or Homebrew on macOS or Linux; A project directory you want to use OpenSpec in; An AI coding assistant that OpenSpec supports (30+ tools listed in the docs).

What are alternatives to Open Spec?

Other hot AI repos in Software and DevOps: Harness2, iFixAi, Orca, Diagram Design, AI Memory.

Is Open Spec safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.