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Agent skill

Atmos Git

by cloudposse in cloudposse/atmos

Atmos Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits, managed workdirs, fork-PR trust gate, and auth via identities or github/sts

Apache-2.0Auto-check passedDevOps & Cloud

Install Atmos Git

skills CLI
$ npx skills add cloudposse/atmos --skill atmos-git -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install cloudposse/atmos atmos-git --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/cloudposse/atmos.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent-skills/skills/atmos-git .claude/skills/atmos-git && rm -rf skills-src

Use ~/.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/

Facts

Skill name
atmos-git
GitHub stars
1.4k
Token cost
~1k tokens
SKILL.md length
425 words
Files
1
Skills in repo
70
Repo updated
First seen
Licence
Apache-2.0

At a glance

Atmos Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits, managed workdirs, fork-PR trust gate, and auth via identities or github/sts

  • Tasks that involve Git workflow
  • SKILL.md covers Related Skills, Configuration, Commands and GitOps Guidance
  • Reaches github.com; needs GITHUB_TOKEN
  • Tasks that involve GitOps

What it does

Atmos Git is an agent skill from cloudposse/atmos. Atmos Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits, managed workdirs, fork-PR trust gate, and auth via identities or github/sts

Its SKILL.md is about 1k 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 DevOps & Cloud, covering Git workflow and GitOps. It works with Git and GitHub. The repository describes itself as: Atmos is the open-source runtime for infrastructure — it builds, authenticates, and ships Terraform, OpenTofu, Packer, Ansible, Kubernetes, Helm, and containers the same way on… The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Git workflow
  • Tasks that involve GitOps

Example prompts

  • “Use the atmos-git skill to atmo Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits…”
  • “/atmos-git”

Requirements

  • A credential in GITHUB_TOKEN

What it can do on your machine

Read from SKILL.md and the folder at commit 36726ae. 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

    No scripts in the folder and no shell commands in SKILL.md (its code samples are yaml).

    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:

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • GITHUB_TOKEN

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Atmos Git loads about 1k tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 425 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~51
When it runs · the whole SKILL.md, loaded when a task matches
~1k

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

The full file from cloudposse/atmos at commit 36726ae, republished under its Apache-2.0 licence (© cloudposse). 425 words, ~1,020 tokens.

Download SKILL.mdSave it as .claude/skills/atmos-git/SKILL.md (or your agent's skills folder).
name
atmos-git
description
Atmos Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits, managed workdirs, fork-PR trust gate, and auth via identities or github/sts
metadata.copyright
Copyright Cloud Posse, LLC 2026
metadata.version
1.0.0
metadata.category
ci-automation

Atmos Git

Use this skill for native Git repository management, GitOps automation, managed workdirs, local Git hook shims, signed commits, and GitHub auth through Atmos Auth or Atmos Pro STS.

NeedLoad
Atmos Pro GitHub App commitsatmos-pro
github/sts credentials for private reposatmos-auth
Lifecycle git hooksatmos-hooks
Modernizing old GitHub Actions GitOps patternsatmos-modernization

Configuration

Configure managed repositories in atmos.yaml:

yaml
git:
  repositories:
    deployment:
      uri: https://github.com/acme/deployment.git
      branch: main
      auth:
        identity: atmos-pro
      commit:
        author:
          name: Atmos Bot
          email: atmos@example.com
        signing: auto               # auto | always | never

Use identities or github/sts for private GitHub access. Do not put tokens in repository URIs.

Commands

CommandPurpose
atmos git listList configured repositories
atmos git clone <name-or-uri>Clone or reconcile a managed repository
atmos git init <name-or-path>Initialize a managed repository
atmos git pull <name-or-path>Fast-forward pull
atmos git status <name-or-path>Show working tree status
atmos git diff <name-or-path>Show changes
atmos git commit <name-or-path> --message "msg"Stage managed paths and commit
atmos git push <name-or-path>Push commits
atmos git clean <name>Remove managed workdirs

Use atmos git hooks install, run, and uninstall for local Git hook shims in the current repository.

GitOps Guidance

  • Use managed repositories for deployment repos, generated config repos, and promotion workflows.
  • Use signed commits where repository policy requires them; prefer commit.signing: auto unless the workflow requires always or never.
  • Use github/sts in CI so Git subprocesses receive short-lived GitHub App credentials.
  • Use atmos pro commit when CI-generated commits must trigger follow-on GitHub Actions workflows.
  • Keep generated commits traceable with clear messages and commit trailers when the project uses provenance conventions.
Show full SKILL.md (186 more words)Show less
Fork-PR Trust Gate

atmos git clone is Atmos's native replacement for actions/checkout, including a no-arg mode that checks out the current CI repository directly from CI environment variables. In pull_request_target and workflow_run contexts the job holds base-repository secrets and GITHUB_TOKEN — the same privilege GitHub hardened actions/checkout@v7 against by refusing to fetch fork PR code by default (the "pwn request" class of risk). Atmos guards the equivalent gap: when it detects an elevated event (pull_request_target/workflow_run) combined with a fork-targeting clone request — an explicit --branch refs/pull/<N>/merge/refs/pull/<N>/head override, or an ad-hoc clone URI whose host or owner/repo differs from the base repository — it refuses to clone and exits non-zero. The safe no-arg default (base repository at its base ref) is never gated, and pull_request/push events are not gated since they don't hold elevated credentials against untrusted code. Opt in explicitly and only with a documented reason via --allow-unsafe-fork, ATMOS_ALLOW_UNSAFE_FORK_EXECUTION, or ci.allow_unsafe_fork_execution: true; the bypass logs a prominent warning so it stays visible in CI logs and easy to grep for in review. Prefer pull_request (not pull_request_target) for workflows that clone and plan fork contributions, since pull_request withholds fork secrets.

© cloudposse, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in agent-skills/skills/atmos-git of cloudposse/atmos.

Open the folder on GitHubat commit 36726ae

Compare with similar skills

Atmos Git 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.

Atmos Git compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Atmos Git this skillcloudposse/atmos1.4k—~1kAutomated safety check: PassApache-2.0
GreptimeDB Release RunbookGreptimeTeam/greptimedb6.7k—~1.4kAutomated safety check: PassApache-2.0
Gpg Multi KeyProrise-cool/Claude-Code-Multi-Agent305—~3.2kAutomated safety check: WarnNone
Release RevokeBlackBeltTechnology/pi-agent-dashboard315—~1.7kAutomated safety check: PassMIT
Git Crypt Backupsundial-org/awesome-openclaw-skills663—~727Automated safety check: NotesNone
ccLoad Release Publishercaidaoli/ccLoad418—~887Automated safety check: PassMIT

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All 70 skills in this repo

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  • Editions

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  • Atmos Migration

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Works with

Categories

Questions about Atmos Git

What does Atmos Git do?

Atmos Git and GitOps: git.repositories, clone/pull/status/diff/commit/push/clean, local Git hook shims, signed commits, managed workdirs, fork-PR trust gate, and auth via identities or github/sts. Atmos Git is an agent skill from cloudposse/atmos.

When should I use Atmos Git?

Atmos Git fits situations like: tasks that involve Git workflow; tasks that involve GitOps.

How do I install Atmos Git in Claude Code?

Run `npx skills add cloudposse/atmos --skill atmos-git -a claude-code`. Or copy the skill folder (agent-skills/skills/atmos-git in cloudposse/atmos) into .claude/skills/atmos-git in your project. Claude Code loads it when a task matches its description.

How do I install Atmos Git in Codex?

Run `npx skills add cloudposse/atmos --skill atmos-git -a codex`. Or copy the skill folder (agent-skills/skills/atmos-git in cloudposse/atmos) into .agents/skills/atmos-git in your project. Codex loads it when a task matches its description.

Can I use Atmos Git 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 cloudposse/atmos --skill atmos-git -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/atmos-git, .gemini/skills/atmos-git, .github/skills/atmos-git and .opencode/skills/atmos-git in your project.

What does Atmos Git need to run?

Going by SKILL.md and its folder, Atmos Git needs credentials named GITHUB_TOKEN. Our summary lists: A credential in GITHUB_TOKEN.

Does Atmos Git access the network?

SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Atmos Git 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 Atmos Git use?

Atmos Git is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Atmos Git use?

About 1k tokens (SKILL.md is roughly 4.1k 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 Atmos Git?

Skills that share tags, products or a category with Atmos Git: GreptimeDB Release Runbook (GreptimeTeam/greptimedb, 6.7k stars), Gpg Multi Key (Prorise-cool/Claude-Code-Multi-Agent, 305 stars), Release Revoke (BlackBeltTechnology/pi-agent-dashboard, 315 stars) and Git Crypt Backup (sundial-org/awesome-openclaw-skills, 663 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Atmos Git?

cloudposse (a GitHub organization) maintains it in cloudposse/atmos, which has 1,396 GitHub stars. The repository holds 70 skills in this directory. The repository was last updated on October 8, 2026.

Source: cloudposse/atmos on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.