agentic-coding-playbook: Skill for Claude Code

.agents/skills/ato-package/SKILL.md

ato-package is a skill for Claude Code, Codex from GSA-TTS/agentic-coding-playbook. It costs 16 tokens per session (1,845 once invoked), scanned A, original, CC0-1.0.

A workflow for collecting, checking, and listing the documents needed for an Authority to Operate (ATO) submission. An ATO is formal approval to operate a system in a regulated environment.

In plain words
What is it for?
Assembling items such as agent instructions, risk assessments, architecture decisions, deployment checklists, coding standards, security policies, and CI/CD definitions.
Why use it?
It shows which review documents exist and identifies missing items before submission. This makes an ATO package easier for an Information System Security Officer (ISSO) to review.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is GSA-TTS/agentic-coding-playbook's own configuration. It tells Claude Code and Codex how to work on agentic-coding-playbook 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 agentic-coding-playbook configures →

Reuse

Borrowing it

Nothing to install: this file belongs to GSA-TTS/agentic-coding-playbook. 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/GSA-TTS/agentic-coding-playbook/main/.agents/skills/ato-package/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/GSA-TTS/agentic-coding-playbook

Made for: Claude Code, Codex.

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 ato-package

README.md
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Your own site
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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 ato-package

Your own site · 80×15
<a href="https://agentmods.dev/skills/gsa-tts/agentic-coding-playbook/ato-package"><img src="https://agentmods.dev/badge/skills/gsa-tts/agentic-coding-playbook/ato-package.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,845 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00016 $0.01845
Opus 5.5 $0.00006 $0.00738
Sonnet 5.5 $0.00003 $0.00369
Haiku 4.5 $0.00002 $0.00185

Measured 1mo ago against content hash b556d4fac3c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ato-package 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.

.agents/skills/ato-package/SKILL.md · 172 lines

How it starts

The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ATO Package Assembly

This skill collects, validates, and indexes all Authority to Operate submission artifacts into a review-ready package for ISSO review.

When to Use

  • Before submitting a system for ISSO review
  • When preparing an ATO package for a new or updated system
  • When asked "is the compliance package complete?"
  • After completing risk assessment, pre-deployment checks, and decision records
Path Kind Notes
docs/risk-assessment.md target-project Read in Step 1/Step 2 as a completed artifact in the repo under assessment; never resolved via §13.1a.
docs/CODING_PRACTICES.md target-project Read in Step 1/Step 2 as an artifact-existence check in the target repo (the target repo's own copy, if any); never resolved via §13.1a.
docs/adr/ target-project Directory checked in Step 1/Step 2 for the target repo's own ADRs; never resolved via §13.1a.
docs/SECURITY-CONTROLS.md playbook-source Used in Step 3 for NIST control family mappings. See AGENTS.md §13.1a if not found at this relative path.
docs/TRACEABILITY.md playbook-source The playbook's traceability matrix (in the agentic-coding-playbook repo), used in Step 3. See AGENTS.md §13.1a if not found at this relative path.

Assembly Procedure

Step 1: Artifact Inventory

Check which required artifacts exist in the target repository:

  • AGENTS.md — behavioral contract defining agent permissions and constraints
  • docs/risk-assessment.md — completed risk assessment (not the template)
  • docs/adr/ directory with at least ADR-001 — architecture decision records
  • checklists/pre-deployment.md — completed checklist with sign-off
  • docs/CODING_PRACTICES.md — coding standards and practices
  • SECURITY.md — vulnerability disclosure policy
  • .github/workflows/ — CI/CD pipeline definitions

For each artifact, record: exists (yes/no), last modified date, file size.

If an artifact is missing, note it as a gap and continue. Do not stop the assembly process for missing items — the gap analysis in Step 4 will capture them.

Read the full file on GitHub · 172 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 Changed · +8 lines b556d4fac3c3
  2. 1mo ago First seen · 164 lines · 16 tokens per session scan A bd48650e0d43

Subscribe to this mod's changes

ato-package is a skill published in the GitHub repository GSA-TTS/agentic-coding-playbook (37 stars, last pushed yesterday), licensed CC0-1.0. It adds 16 tokens to every session and 1,845 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.

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