openspec-install | partme-ai-full-stack-skills | ClaudePluginHub

Skill

openspec-install

From partme-ai-full-stack-skills

Installs OpenSpec CLI globally via npm, pnpm, yarn, bun, or nix. Use for first-time setup, 'openspec command not found' errors, or upgrades.

developer-tools

Install

$

npx claudepluginhub partme-ai/full-stack-skills --plugin t2ui-skills

Tool Access

This skill uses the workspace's default tool permissions.

Preview

Install the [OpenSpec CLI](https://github.com/Fission-AI/OpenSpec) so that `openspec` is available globally. This skill covers only **installing the CLI**; it does not run `openspec init`. For project initialization after install, use **openspec-initial**.

Supporting Assets

examples/nix.mdexamples/npm.mdexamples/pnpm.md

SKILL.md

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Stars328

Forks62

Last CommitMar 23, 2026

Used By2 plugins

Actions

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Tags

package-manager

OpenSpec Install Skill

Install the OpenSpec CLI so that openspec is available globally. This skill covers only installing the CLI; it does not run openspec init. For project initialization after install, use openspec-initial.

When to Use

First-time OpenSpec setup ("install OpenSpec", "get started with OpenSpec").
User reports "openspec: command not found".
Upgrading to the latest version.
CI or scripts that need the CLI pre-installed.

Prerequisites

Node.js 20.19.0 or higher — Check with node --version. If not installed, guide the user to install Node.js first (e.g. via nvm, fnm, or official installer).

Workflow

Check if already installed
- Run openspec --version. If it succeeds, the CLI is already installed; suggest openspec-initial for project setup or upgrading via npm install -g @fission-ai/openspec@latest.
Choose package manager and install
- npm (most common): npm install -g @fission-ai/openspec@latest
- pnpm: pnpm add -g @fission-ai/openspec@latest
- yarn: yarn global add @fission-ai/openspec@latest
- bun: bun add -g @fission-ai/openspec@latest
- nix (one-time, no install): nix run github:Fission-AI/OpenSpec -- init
- nix (persistent): nix profile install github:Fission-AI/OpenSpec
Verify installation
- Run openspec --version to confirm.
Upgrade existing installation
- Same command as install — e.g. npm install -g @fission-ai/openspec@latest.

Outputs

openspec command available globally in PATH.

Next Steps

Use openspec-initial to run openspec init in a project.
Or use openspec-onboard for a guided tutorial.

Different Environments

Environment	Command
npm	`npm install -g @fission-ai/openspec@latest`
pnpm	`pnpm add -g @fission-ai/openspec@latest`
yarn	`yarn global add @fission-ai/openspec@latest`
bun	`bun add -g @fission-ai/openspec@latest`
nix (one-time)	`nix run github:Fission-AI/OpenSpec -- init`
nix (persistent)	`nix profile install github:Fission-AI/OpenSpec`
CI	`npm install -g @fission-ai/openspec@latest` in a cacheable step

Troubleshooting

Node.js version too old: OpenSpec requires Node.js 20.19.0+. Upgrade Node.js first.
Permission errors (npm): Use npm install -g without sudo if using nvm/fnm; otherwise consider using nvm.
Command not found after install: Ensure the global bin directory is in PATH (check npm bin -g).
nix not available: Install nix or use npm/pnpm/yarn/bun instead.

References