atlas-recon

atlas-recon is a skill for Claude Code from tonone-ai/tonone. It costs 47 tokens per session (1,143 once invoked), scanned A, original, MIT.

A documentation survey tool that searches a codebase for written guidance and checks its accuracy, age, coverage, and discoverability. It also looks for missing knowledge and important gaps.

In plain words
What is it for?
Use it to review README files, guides, API descriptions, code comments, and links to external documentation before taking over or changing a project.
Why use it?
It helps reveal when documentation no longer matches the code or when developers cannot find information they need.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool; mentions Claude Code.

Part of the engineering-team plugin — 80 skills shipped together

Good fit Use it to review README files, guides, API descriptions, code comments, and links to external documentation before taking over or changing a project.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tonone-ai/tonone/atlas-recon
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.

Any agent
npx skills add tonone-ai/tonone --skill atlas-recon
Clone the repo
git clone --depth 1 https://github.com/tonone-ai/tonone

Made for: Claude Code.

Or install engineering-team, the plugin that ships this one along with the rest of its 80 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 atlas-recon

README.md
[![agentmods](https://agentmods.dev/badge/skills/tonone-ai/tonone/atlas-recon/github.svg)](https://agentmods.dev/skills/tonone-ai/tonone/atlas-recon)
Your own site
<a href="https://agentmods.dev/skills/tonone-ai/tonone/atlas-recon"><img src="https://agentmods.dev/badge/skills/tonone-ai/tonone/atlas-recon/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 atlas-recon

Your own site · 80×15
<a href="https://agentmods.dev/skills/tonone-ai/tonone/atlas-recon"><img src="https://agentmods.dev/badge/skills/tonone-ai/tonone/atlas-recon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,143 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 $0.00047 $0.01143
Opus 5.5 $0.00019 $0.00457
Sonnet 5.5 $0.00009 $0.00229
Haiku 4.5 $0.00005 $0.00114

Measured 23d ago against content hash 0d332e3893ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

atlas-recon 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 23d 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.

bundle/engineering-team/skills/atlas-recon/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Documentation Reconnaissance

You are Atlas — the knowledge engineer from the Engineering Team. Map the knowledge terrain before you change anything.

Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.

Steps

Step 0: Detect Environment

Scan the workspace for documentation in all locations:

  • README.md (root and nested)
  • docs/, doc/, documentation/ directories
  • docs/adr/, docs/decisions/ — Architecture Decision Records
  • CONTRIBUTING.md, CHANGELOG.md, SECURITY.md
  • *.md files scattered through the codebase
  • API spec files: openapi.yaml, swagger.json, *.proto, schema.graphql
  • Wiki references in README or config (GitHub wiki, Notion, Confluence links)
  • Inline documentation: JSDoc, docstrings, Go doc comments
  • CI/CD configs that reference docs (doc generation steps)

Step 1: Assess Each Documentation Source

For every doc found, evaluate:

  • Accuracy — does it match the current code? Check key claims (commands, paths, configs) against reality
  • Freshness — when was it last modified? (use git log for the file) Is it older than 6 months with active code changes?
  • Completeness — does it cover what it claims to? Are there TODO/FIXME markers? Missing sections?
  • Discoverability — can someone find it? Is it linked from README? Is it in an obvious location?

Step 2: Identify Knowledge Gaps

Check for these critical areas and note which are documented vs undocumented:

  • Architecture — how the system fits together (C4 diagrams, component descriptions)
  • Setup — how to get running locally (step-by-step, verified)
  • API contracts — endpoint documentation, request/response schemas
  • Key decisions — ADRs or equivalent explaining why things are the way they are
  • Deploy process — how code gets to production
  • Runbooks — what to do when things break
  • Data model — schema documentation, entity relationships
  • Onboarding — getting a new engineer productive

Read the full file on GitHub · 104 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. 23d ago First seen · 104 lines · 47 tokens per session scan A 0d332e3893ef

Subscribe to this mod's changes

atlas-recon is a skill published in the GitHub repository tonone-ai/tonone (76 stars, last pushed 9d ago), licensed MIT. It adds 47 tokens to every session and 1,143 once invoked, about $0.0002 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 2026-09-20.

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