Contextual Commit Messages
yamadashy/repomix
Writes Conventional Commits whose bodies carry action lines recording the intent, decisions and constraints behind a change, not only what changed.
Guidelines to follow when committing, or amending commits. An agent skill from mozilla-firefox/firefox.
Install Firefox Commits
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mozilla-firefox/firefox firefox-commits --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/firefox-commits .claude/skills/firefox-commits && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .claude/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commitsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mozilla-firefox/firefox firefox-commits --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/firefox-commits .agents/skills/firefox-commits && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .agents/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mozilla-firefox/firefox firefox-commits --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/firefox-commits .cursor/skills/firefox-commits && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .cursor/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mozilla-firefox/firefox.git --path .agents/skills/firefox-commits--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mozilla-firefox/firefox firefox-commits --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/firefox-commits .gemini/skills/firefox-commits && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .gemini/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mozilla-firefox/firefox firefox-commitsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/firefox-commits .github/skills/firefox-commits && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .github/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mozilla-firefox/firefox --skill firefox-commits -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mozilla-firefox/firefox firefox-commits --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mozilla-firefox/firefox.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/firefox-commits .opencode/skills/firefox-commits && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "firefox-commits" agent skill from https://github.com/mozilla-firefox/firefox/tree/main/.agents/skills/firefox-commits into .opencode/skills/firefox-commits/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "firefox-commits", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
firefox-commits- GitHub stars
- 13k
- Token cost
- ~999 tokens
- SKILL.md length
- 606 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Guidelines to follow when committing, or amending commits. An agent skill from mozilla-firefox/firefox.
- Tasks that involve Commit messages
- SKILL.md covers Modifying a commit message, Content of the message and Security bugs
- Calls git; reaches phabricator.services.mozilla.com
What it does
Firefox Commits is an agent skill from mozilla-firefox/firefox. Guidelines to follow when committing, or amending commits
Its SKILL.md is about 1000 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Commit messages. The repository describes itself as: The official repository of Mozilla's Firefox web browser.
When your agent uses it
- Tasks that involve Commit messages
Example prompts
- “Use the firefox-commits skill to guideline to follow when committing, or amending commits. An agent skill from mozilla-firefox/firefox”
- “/firefox-commits”
What it can do on your machine
Read from SKILL.md and the folder at commit 59c8a94. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
phabricator.services.mozilla.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Firefox Commits loads about 999 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 606 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 606 words (~999 tokens).
“moz-phab submit adds the Differential Revision: line. Write only the lines above it, removing such a line will create a new review request, lose comment history and confuse everybody.”
- name
- firefox-commits
Files
Just SKILL.md in .agents/skills/firefox-commits of mozilla-firefox/firefox.
Open the folder on GitHubat commit 59c8a94
Compare with similar skills
Firefox Commits next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Firefox Commits this skillmozilla-firefox/firefox | 13k | — | ~999 | Automated safety check: Pass | Custom licence | |
| Contextual Commit Messagesyamadashy/repomix | 29k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| React Router Release Notes Prepremix-run/react-router | 57k | — | ~1.1k | Automated safety check: Pass | MIT | |
| Caveman Commitvishiri/fantasia-archive | 409 | 13 repos | ~642 | Automated safety check: Pass | GPL-3.0 | |
| PR Finalize Reviewmicrosoft/garnet | 12k | — | ~3.1k | Automated safety check: Pass | MIT | |
| ToolJet Multi-Repo CommitToolJet/ToolJet | 41k | — | ~1.3k | Automated safety check: Pass | AGPL-3.0 |
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Ultra-compressed commit message generator. An agent skill from vishiri/fantasia-archive.
- Official
PR Finalize Review
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Checks that a pull request's title and description match its implementation and reviews the code for Garnet best practices, reporting findings without posting them.
ToolJet Multi-Repo Commit
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Commits changes across ToolJet's root repo and its server/ee and frontend/ee submodules, writing messages from the diffs and updating submodule pointers in order.
Git Workflow and Versioning
addyosmani/agent-skills
Sets git habits for every change: short-lived branches, atomic commits with descriptive messages, clean pull requests, plus versioning, tagging and changelogs for releases.
More from mozilla-firefox/firefox
Stack Reorganize
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Reorganize a range of local commits so each one stands on its own for review, by splitting, reordering, squashing or dropping them.
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Handle a Perfherder performance regression bug end to end: read the alert bug, confirm whether the regression is real, find the cause, and iterate to a fix.
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Record a Firefox performance profile with the firefox-devtools MCP.
Stack Split Commit
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Split one large or hard-to-review commit into several commits that each stand on their own for review, in a git or a Jujutsu (jj) checkout.
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JS Review
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A skill your agent uses when reviewing code the JS engine (SpiderMonkey, js/src/) or self-reviewing code while producing it.
Related
Categories
Questions about Firefox Commits
What does Firefox Commits do?
Guidelines to follow when committing, or amending commits. An agent skill from mozilla-firefox/firefox. Firefox Commits is an agent skill from mozilla-firefox/firefox.
When should I use Firefox Commits?
Firefox Commits fits situations like: tasks that involve Commit messages.
How do I install Firefox Commits in Claude Code?
Run `npx skills add mozilla-firefox/firefox --skill firefox-commits -a claude-code`. Or copy the skill folder (.agents/skills/firefox-commits in mozilla-firefox/firefox) into .claude/skills/firefox-commits in your project. Claude Code loads it when a task matches its description.
How do I install Firefox Commits in Codex?
Run `npx skills add mozilla-firefox/firefox --skill firefox-commits -a codex`. Or copy the skill folder (.agents/skills/firefox-commits in mozilla-firefox/firefox) into .agents/skills/firefox-commits in your project. Codex loads it when a task matches its description.
Can I use Firefox Commits in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mozilla-firefox/firefox --skill firefox-commits -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/firefox-commits, .gemini/skills/firefox-commits, .github/skills/firefox-commits and .opencode/skills/firefox-commits in your project.
What does Firefox Commits need to run?
Going by SKILL.md and its folder, Firefox Commits needs the command-line tools its instructions call (git).
Does Firefox Commits access the network?
SKILL.md names 1 domain. In commands or code: phabricator.services.mozilla.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Firefox Commits safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Firefox Commits use?
Firefox Commits has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Firefox Commits use?
About 999 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Firefox Commits?
Skills that share tags, products or a category with Firefox Commits: Contextual Commit Messages (yamadashy/repomix, 29k stars), React Router Release Notes Prep (remix-run/react-router, 57k stars), Caveman Commit (vishiri/fantasia-archive, 409 stars) and PR Finalize Review (microsoft/garnet, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Firefox Commits?
mozilla-firefox (a GitHub organization) maintains it in mozilla-firefox/firefox, which has 13,384 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 8, 2026.
Source: mozilla-firefox/firefox on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.