repo-map

repo-map is a skill for Claude Code from yeaight7/agent-powerups. It costs 26 tokens per session (412 once invoked), scanned A, original, Apache-2.0.

A structured way to map an unfamiliar code repository before changing it. It identifies the project layout, entry points, major modules, and typical data flow.

In plain words
What is it for?
It helps onboard developers, locate feature code, and identify complex or risky areas through observation only.
Why use it?
Editing without understanding where code starts and how parts connect can cause wasted effort or changes in the wrong place.

Skill for Claude Code

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

Part of the dev-vitals plugin — 14 skills, 4 commands, 1 agent shipped together

Good fit It helps onboard developers, locate feature code, and identify complex or risky areas through observation only.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yeaight7/agent-powerups/repo-map
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 yeaight7/agent-powerups --skill repo-map
Clone the repo
git clone --depth 1 https://github.com/yeaight7/agent-powerups

Made for: Claude Code.

Or install dev-vitals, the plugin that ships this one along with the rest of its 14 skills, 4 commands, 1 agent.

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 repo-map

README.md
[![agentmods](https://agentmods.dev/badge/skills/yeaight7/agent-powerups/repo-map/github.svg)](https://agentmods.dev/skills/yeaight7/agent-powerups/repo-map)
Your own site
<a href="https://agentmods.dev/skills/yeaight7/agent-powerups/repo-map"><img src="https://agentmods.dev/badge/skills/yeaight7/agent-powerups/repo-map/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 repo-map

Your own site · 80×15
<a href="https://agentmods.dev/skills/yeaight7/agent-powerups/repo-map"><img src="https://agentmods.dev/badge/skills/yeaight7/agent-powerups/repo-map.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 412 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 $0.00026 $0.00412
Opus 5 $0.00013 $0.00206
Sonnet 5 $0.00005 $0.00082
Haiku 4.5 $0.00003 $0.00041

Measured yesterday against content hash ed6de1e98021, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-15, from the pricing page.

Security

Grade A, and why

repo-map 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 yesterday.

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.

plugins/dev-vitals/skills/repo-map/SKILL.md · 51 lines

What it actually says

Purpose

Produce a structured overview of an unfamiliar codebase before making changes. Prevents wasted effort caused by misunderstanding project layout or entry points.

When to Use

  • Starting work on an unfamiliar repository or module.
  • Onboarding to a new project before the first edit.
  • Locating where a feature lives before implementing or modifying it.

Do not edit code during this skill. Observation only.

Inputs

  • Repository path or access to the codebase.
  • Optional: specific area of interest (module, feature, data flow).

Workflow

  1. Identify project root, package manager, and language(s).
  2. Find main entry points (executables, API handlers, CLI commands).
  3. Read the smallest set of files needed to explain the architecture.
  4. Map major modules, their responsibilities, and how data flows between them.
  5. Flag risky or complex areas (high churn, missing tests, tangled dependencies).

Output

  • Project purpose — What it does in one or two sentences.
  • Entry points — Where execution starts.
  • Main modules — What each major directory or package is responsible for.
  • Data flow — How a typical request or operation moves through the system.
  • Risky areas — Complex, undertested, or high-coupling zones to approach carefully.

Verification

  • No code was edited during this skill
  • All major modules identified
  • Entry points documented
  • Risky areas flagged

Failure Modes

  • Premature editing — Do not make changes during mapping. Finish the map first.
  • Monorepo confusion — Map each package or app separately if the repo contains multiple independent projects.
  • Metaprogramming blind spots — Dynamic languages may have runtime-defined routes or classes. Note these as limitations in the output.
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. yesterday First seen · 51 lines · 26 tokens per session scan A ed6de1e98021

Subscribe to this mod's changes

repo-map is a skill published in the GitHub repository yeaight7/agent-powerups (6 stars, last pushed 2d ago), licensed Apache-2.0. It adds 26 tokens to every session and 412 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 2026-09-14.