atmos: Agent for Claude Code

.claude/agents/README.md

README is an agent for Claude Code from cloudposse/atmos. It costs 0 tokens per session (694 once invoked), scanned A, original, Apache-2.0.

A directory of specialized coding agents for Atmos development. Each agent focuses on a particular area, such as creating agents, building terminal interfaces, making examples, or handling review feedback.

In plain words
What is it for?
Use it to choose an agent for Atmos work, including agent instructions, themed terminal UI components, examples, and CodeRabbit review fixes.
Why use it?
It helps route a development task to an agent with the relevant project knowledge instead of relying on one generalist.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

This is cloudposse/atmos's own configuration. It tells Claude Code how to work on atmos itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything atmos configures →

About the project

Atmos is an infrastructure runtime that coordinates tools such as Terraform, OpenTofu, Kubernetes, Helm, Packer, Ansible, and containers through consistent commands and configuration. It is for teams running cloud infrastructure on laptops, in CI, or through AI agents across environments and regions. Its catalogue entries provide skills, agents, commands, and other add-ons for Atmos workflows.

cloudposse/atmos · 1,403 stars · on GitHub · atmos.tools

Reuse

Borrowing it

Nothing to install: this file belongs to cloudposse/atmos. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/cloudposse/atmos/main/.claude/agents/README.md
Clone the repo
git clone --depth 1 https://github.com/cloudposse/atmos

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for README

README.md
[![agentmods](https://agentmods.dev/badge/agents/cloudposse/atmos/readme/github.svg)](https://agentmods.dev/agents/cloudposse/atmos/readme)
Your own site
<a href="https://agentmods.dev/agents/cloudposse/atmos/readme"><img src="https://agentmods.dev/badge/agents/cloudposse/atmos/readme/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for README

Your own site · 80×15
<a href="https://agentmods.dev/agents/cloudposse/atmos/readme"><img src="https://agentmods.dev/badge/agents/cloudposse/atmos/readme.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 694 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00694
Opus 5.5 $0.00000 $0.00278
Sonnet 5.5 $0.00000 $0.00139
Haiku 4.5 $0.00000 $0.00069

Measured 1mo ago against content hash 32071865c9f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

README scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/README.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Agents

Specialized Claude agents for Atmos development. Each agent is an expert in a specific domain, helping scale development through focused expertise.

Available Agents

agent-developer

Expert in creating and maintaining Claude agents with correct frontmatter, context efficiency, and PRD awareness.

Use when: Creating new agents, updating existing agents, or optimizing agent instructions.

tui-expert

Theme-aware Terminal UI system expert. Use for developing UI components, refactoring to theme-aware patterns, and theme architecture guidance.

Use when: Working with theme system, TUI components, or terminal output formatting.

example-creator

Expert in creating Atmos examples with proper structure, documentation, mock components, and CI testing integration.

Use when: Creating new examples/demos, adding mock components, writing test cases for examples, or updating documentation with EmbedFile components.

coderabbit-review

Reviews and addresses CodeRabbit feedback on code changes: parses review threads, verifies each finding against current code, applies valid fixes, skips stale/wrong ones with explanation.

Use when: A CodeRabbit review lands with unresolved feedback, on-demand or from the pr-maintenance-loop skill's hourly cycle.

lint-fix

Fixes golangci-lint findings (patch-scoped or full-repo) produced by the lint skill, following this repo's formatting/error-handling/comment conventions.

Use when: The lint skill has findings to fix, either human-invoked or from pr-maintenance-loop's hourly cycle.

test-coverage-fix

Fixes in-scope failing tests (never pre-existing ones), then fixes genuine coverage gaps on added lines, for the current patch vs origin/main. Zero tolerance for coverage theater or weakened assertions.

Use when: The test-coverage skill has failures or coverage gaps to address, either human-invoked or from pr-maintenance-loop's hourly cycle.

merge-conflict-resolve

Read the full file on GitHub · 78 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 78 lines · 0 tokens per session scan A 32071865c9f3

Subscribe to this mod's changes

README is an agent published in the GitHub repository cloudposse/atmos (1,403 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 694 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.