atmos-sbom

atmos-sbom is a skill for Claude Code from cloudposse/atmos. It costs 36 tokens per session (1,232 once invoked), scanned A, original, Apache-2.0.

A guide to generating a software bill of materials, or SBOM, for Atmos-managed infrastructure. An SBOM is a record of the software and build inputs used by a project; this one uses formats such as CycloneDX and SPDX.

In plain words
What is it for?
Use it to generate and review provenance records for vendor files, Terraform providers, modules, and selected Atmos dependencies, then validate or publish them in CI.
Why use it?
It shows what evidence was included and identifies gaps, so build provenance is not mistaken for a complete inventory of everything running in production.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the atmos plugin — 51 skills shipped together

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 · 1,372 stars · on GitHub · atmos.tools

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/cloudposse/atmos/atmos-sbom
Any agent
npx skills add cloudposse/atmos --skill atmos-sbom
Clone the repo
git clone --depth 1 https://github.com/cloudposse/atmos

Made for: Claude Code.

Or install atmos, the plugin that ships this one along with the rest of its 51 skills.

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 atmos-sbom

README.md
[![agentmods](https://agentmods.dev/badge/skills/cloudposse/atmos/atmos-sbom.svg)](https://agentmods.dev/skills/cloudposse/atmos/atmos-sbom)
Your own site
<a href="https://agentmods.dev/skills/cloudposse/atmos/atmos-sbom"><img src="https://agentmods.dev/badge/skills/cloudposse/atmos/atmos-sbom.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,232 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00036 $0.01232
Opus 5 $0.00018 $0.00616
Sonnet 5 $0.00007 $0.00246
Haiku 4.5 $0.00004 $0.00123

Measured 3d ago against content hash c51ed8b53cbe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

atmos-sbom 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 3d 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.

agent-skills/skills/atmos-sbom/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Atmos SBOM Provenance

Purpose

Use this skill to generate, review, or publish an Atmos software bill of materials (SBOM). Atmos produces a provenance/build-input SBOM: it records evidence used to build or run the selected infrastructure scope. It is not a claim that every deployed workload has been inventoried.

Atmos-managed source receipts (vendor.lock.yaml, including OCI-sourced artifacts) are always included, regardless of --scope. --scope additionally selects one of two adapter groups: the default terraform adds Terraform provider locks and Terraform modules (when the configured command exposes a stable module graph); --scope dependencies instead adds Atmos's own toolchain (.tools/toolchain.lock.yaml) and version-track (versions.lock.yaml) evidence. Helm, Helmfile, discovered deployed images, image package contents, and OpenTofu module graphs are outside this initial scope and must be reported as incomplete or unavailable rather than silently treated as absent.

Need Load
Immutable vendor receipts, reconciliation, Component Updater PRs atmos-vendoring
Just-in-time component source workdirs and source receipts atmos-components
Native CI workflow structure and GitHub Actions runtime setup atmos-ci
Toolchain locks and configured Terraform/OpenTofu commands atmos-toolchain
Version-track locks atmos-version

Generate an SBOM

Generate CycloneDX JSON to stdout, or write either supported format to a reviewed output file:

atmos sbom generate --format cyclonedx-json
atmos sbom generate --format spdx-json --output sbom.spdx.json
atmos sbom generate --include-files --output sbom.cyclonedx.json

--include-files expands the output with the vendor receipt's installation-file relationships; omit it for the normal artifact-oriented output.

Read the full file on GitHub · 125 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. 3d ago First seen · 125 lines · 36 tokens per session scan A c51ed8b53cbe

Subscribe to this mod's changes

atmos-sbom is a skill published in the GitHub repository cloudposse/atmos (1,372 stars, last pushed today), licensed Apache-2.0. It adds 36 tokens to every session and 1,232 once invoked, about $0.0002 per session on Opus 5. 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 2026-09-03.

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