skill-kit

Agent skills for the points where an agent's work reaches a person.

These are the points where agent work costs a person time or embarrassment: a question buried in a long reply, a claim with no source, a key in a public commit. Process kits such as superpowers cover how an agent builds. This kit covers what happens when that work meets a person, and works alongside them.

Each skill is a plain SKILL.md folder, so any agent tool that reads that format can use it.

Install

Claude Code

/plugin marketplace add S3yon/skill-kit
/plugin install skill-kit@skill-kit

The skills then show as skill-kit:<name>, for example skill-kit:quiz.

Checked against https://code.claude.com/docs/en/plugin-marketplaces, 2026-10-02.

GitHub Copilot CLI

Reads the same plugin manifests as Claude Code.

copilot plugin marketplace add S3yon/skill-kit
copilot plugin install skill-kit@skill-kit

Or in one step: copilot plugin install S3yon/skill-kit.

Checked against https://docs.github.com/en/copilot/reference/copilot-cli-reference/cli-plugin-reference, 2026-10-02.

Qwen Code

Reads the same marketplace file as Claude Code.

qwen extensions install S3yon/skill-kit:skill-kit

Checked against https://github.com/QwenLM/qwen-code/blob/main/docs/users/extension/introduction.md, 2026-10-02.

Gemini CLI

Reads gemini-extension.json and loads skills/.

gemini extensions install https://github.com/S3yon/skill-kit

Checked against https://github.com/google-gemini/gemini-cli/blob/main/docs/extensions/reference.md, 2026-10-02.

Codex

Reads the root plugin.json and finds skills/ on its own.

codex plugin marketplace add S3yon/skill-kit
codex plugin add skill-kit@skill-kit

Checked against https://developers.openai.com/plugins/build/plugins, 2026-10-02.

Cursor

Reads the root plugin.json and .cursor-plugin/marketplace.json. Open Customize, then From GitHub Repository, and enter S3yon/skill-kit.

Checked against https://cursor.com/docs/plugins, 2026-10-02.

Copy a folder

Copy one folder from skills/ into the tool's skills folder:

No manual install test was run. Of these tools, only the Cursor CLI was installed on the machine where the steps were checked, and it was not signed in, so it could not load a plugin.

Always-on snippet

Skills load when their description matches the task. To have three of the rules apply on every task, paste these lines into a project's agent instructions file:

- Report an action as done only with the tool result that shows it, and an outside fact only with its source.
- Put any draft that needs approval in full in the reply text.
- Run push-check before any push to a public remote.

The scripts on their own

Both need only Python 3.10 or later. push_check.py also needs git.

skills/writing-check/scripts/slop_check.py checks a draft:

python3 skills/writing-check/scripts/slop_check.py draft.md

It prints one line per flag with the line number and a replacement. Exit 0 means clean, 1 means something was flagged. The patterns and why they are on the list: tells.md.

skills/push-check/scripts/push_check.py checks commits before a push:

python3 skills/push-check/scripts/push_check.py --remote origin
python3 skills/push-check/scripts/push_check.py --install-hook

With no range it scans the unpushed commits. --install-hook installs it as the repo's pre-push hook. Exit 0 means nothing blocks, 1 means something does, 2 means a usage error.

Tests, CI and evals

• python3 -m unittest discover tests runs the script tests.
• python3 scripts/validate.py checks every skill folder, eval file and plugin manifest.
• CI runs both on every push and pull request, on Python 3.10 and the latest 3.x.
• Each skill's evals/evals.json holds prompts with checkable assertions. How to run and grade them: docs/evals.md.

License

MIT