agentic-coding-playbook: Skill for Claude Code

.agents/skills/agent-permissions/SKILL.md

agent-permissions is a skill for Claude Code, Codex from GSA-TTS/agentic-coding-playbook. It costs 24 tokens per session (2,004 once invoked), scanned A, original, CC0-1.0.

An environment check for the credentials and tools available to an AI coding agent. It compares those resources with the needs listed in a project plan without exposing secret values.

In plain words
What is it for?
Checking environment variables, CLI login status, required permissions, and setup gaps after cloning a project or rotating credentials.
Why use it?
It shows why an agent cannot authenticate, call an API, push code, or deploy, and tells a developer what setup is missing.

Skill for Claude CodeCodex

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

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/agent-permissions/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 agent-permissions

README.md
[![agentmods](https://agentmods.dev/badge/skills/gsa-tts/agentic-coding-playbook/agent-permissions.svg)](https://agentmods.dev/skills/gsa-tts/agentic-coding-playbook/agent-permissions)
Your own site
<a href="https://agentmods.dev/skills/gsa-tts/agentic-coding-playbook/agent-permissions"><img src="https://agentmods.dev/badge/skills/gsa-tts/agentic-coding-playbook/agent-permissions.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,004 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 $0.00024 $0.02004
Opus 5 $0.00012 $0.01002
Sonnet 5 $0.00005 $0.00401
Haiku 4.5 $0.00002 $0.00200

Measured 6d ago against content hash 051189b0a898, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

agent-permissions 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 6d 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/agent-permissions/SKILL.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Agent Environment Doctor

Detect what credentials and tools an AI coding agent has access to, diagnose gaps against the project plan, and output actionable fix commands for each missing item.

When to Use

  • First thing after cloning a repo — before the agent tries to push, deploy, or call APIs
  • Agent reports "permission denied" or "authentication failed"
  • Onboarding a new developer or setting up a new environment
  • Running the agent in a sandboxed environment (Codespace, container, CI runner)
  • After rotating credentials to verify everything still works

Core Principles

Detect, don't create. A sandboxed agent cannot create tokens or access browser UIs. This skill checks what's available and tells the human exactly what to fix.

Never log secret values. Check env var names and CLI auth status only. Never print, log, or transmit credential values.

Least privilege. Every credential gets the minimum scope needed for its job.

Quick Start

# Run the environment doctor
make doctor

# Machine-readable JSON output
make doctor-json

# With custom project plan path
PYTHONPATH=scripts python3 -m playbook_validator doctor --plan path/to/PROJECT_PLAN.md

How It Works

The doctor runs three phases:

Phase 1: Detect

Scans the environment for available tools and credentials:

Check Method What It Proves
Git command -v git Version control available
Git remote git remote get-url origin Platform identified (GitHub/GitLab)
GitHub CLI gh auth status Can create PRs, issues, manage repo
GITHUB_TOKEN env var presence API access for automation
cloud.gov CLI cf target Can deploy applications
GitLab token GITLAB_TOKEN env var Can push to GitLab instance
AI API keys ANTHROPIC_API_KEY, OPENAI_API_KEY, etc. Agent has LLM access
.gitignore grep for .env pattern Secrets won't be committed

Phase 2: Diagnose

Compares detected capabilities against PROJECT_PLAN.md requirements:

Read the full file on GitHub · 265 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. 6d ago First seen · 265 lines · 24 tokens per session scan A 051189b0a898

Subscribe to this mod's changes

agent-permissions is a skill published in the GitHub repository GSA-TTS/agentic-coding-playbook (23 stars, last pushed 4d ago), licensed CC0-1.0. It adds 24 tokens to every session and 2,004 once invoked, about $0.0001 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 2026-08-30.

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