fstack turns everyday engineering workflows into skills your coding agent runs end to end. Ask in plain words and the agent follows the same proven steps every time, coming back to you only for the decisions that are yours to make.
| Area | Skills |
|---|---|
| Planning | feature-design |
| UX | ux-brainstorm · ux-stress-test |
| Code quality | comment-sweep |
| Pull requests | pr-ship · pr-babysit · resolve-merge-conflicts |
/plugin install fstack --marketplace mastro993/fstack
On Claude Code older than 2.1.275
/plugin marketplace add mastro993/fstack
/plugin install fstack@fedemas
In Copilot CLI:
copilot plugin marketplace add mastro993/fstack
copilot plugin install fstack@fedemasIn VS Code, turn on the chat.plugins.enabled setting. VS Code then loads plugins installed with Copilot CLI; without the CLI, run Chat: Install Plugin from Source and enter https://github.com/mastro993/fstack.
codex plugin marketplace add mastro993/fstack
codex plugin add fstack@fedemaspi install git:github.com/mastro993/fstackAdd -l to install for the current project only. Pi ships without subagents, which ux-stress-test needs, so add a subagent package from the Pi package gallery before you run it.
omp plugin marketplace add mastro993/fstack
omp plugin install fstack@fedemasAdd --scope project to install for the current project only.
The skills CLI installs the skills into Cursor, OpenCode, Gemini CLI, Windsurf, and many more agents:
npx skills add mastro993/fstackIt asks which skills and agents you want, and installs into the current project unless you add -g. To skip the questions, name them:
npx skills add mastro993/fstack --skill pr-babysit --skill resolve-merge-conflicts --agent cursor -g -yMIT © Federico Mastrini