repo-onboarder

repo-onboarder is a skill for Claude Code, Codex from surfmind-space/awesome-surfmind. It costs 73 tokens per session (688 once invoked), scanned A, original, MIT.

A guide for getting familiar with an existing code repository, meaning a project's files, configuration, and development instructions. It explains the project's purpose, structure, setup, commands, and important files.

In plain words
What is it for?
Use it when joining a codebase, preparing a local development environment, finding the main parts of an application, or learning how to build and test it.
Why use it?
It saves a new contributor from guessing how the project works or which commands are safe to run. It also highlights missing or possibly outdated documentation.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when joining a codebase, preparing a local development environment, finding the main parts of an application, or learning how to build and test it.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/surfmind-space/awesome-surfmind/repo-onboarder
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 surfmind-space/awesome-surfmind --skill repo-onboarder
Clone the repo
git clone --depth 1 https://github.com/surfmind-space/awesome-surfmind

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 repo-onboarder

README.md
[![agentmods](https://agentmods.dev/badge/skills/surfmind-space/awesome-surfmind/repo-onboarder/github.svg)](https://agentmods.dev/skills/surfmind-space/awesome-surfmind/repo-onboarder)
Your own site
<a href="https://agentmods.dev/skills/surfmind-space/awesome-surfmind/repo-onboarder"><img src="https://agentmods.dev/badge/skills/surfmind-space/awesome-surfmind/repo-onboarder/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-onboarder

Your own site · 80×15
<a href="https://agentmods.dev/skills/surfmind-space/awesome-surfmind/repo-onboarder"><img src="https://agentmods.dev/badge/skills/surfmind-space/awesome-surfmind/repo-onboarder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 688 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 $0.00073 $0.00688
Opus 5 $0.00036 $0.00344
Sonnet 5 $0.00015 $0.00138
Haiku 4.5 $0.00007 $0.00069

Measured 12d ago against content hash cc3145de1ad1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

repo-onboarder 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 12d 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.

skills/repo-onboarder/SKILL.md · 42 lines

How it starts

The opening of the file, as written. The whole thing — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repo Onboarder

Read a repository's page, README, file tree, and package metadata to explain what it does and how to get it running — purpose, architecture, setup and run commands, key scripts, environment needs, and the first files worth opening. Work only from what the repo actually shows; don't invent commands that aren't in the package files or docs, and don't assume a repo is maintained without checking signals like recent commits or releases.

  1. Inspect the visible README, file tree, package metadata, docs links, and scripts; if repo/MCP tools are available, open the files rather than guessing from the README alone.
  2. Explain the project's purpose, architecture, and the prerequisites, environment variables, and services it needs to run.
  3. Cross-check any install, run, or test commands against package.json, Makefile, pyproject.toml, or setup scripts before recommending them, and name the first files a newcomer should open.
  4. Flag likely gotchas and any docs that are missing or out of date.

Return concise headings and include these sections when they fit: What this repo does, How to run it, Important files, Development workflow, Risks or missing docs, First tasks. Separate supported facts from assumptions and recommendations. Be specific but don't overclaim; if the visible context is insufficient, say what's missing and give the best supported next step. Respond in the same language as the user's request.

Example

Repo (a small Node.js CLI):

Root has package.json, src/index.js, src/parse.js, README.md (a one-line description and npm install), and a test/ folder. package.json scripts: "start": "node src/index.js", "test": "vitest".

Onboarding summary:

What this repo does: A command-line tool that parses a config file and prints a normalized version (per the README's one-liner and src/parse.js).

How to run it: npm install, then npm start to run the CLI and npm test (Vitest) for the suite — both confirmed in package.json scripts.

Important files: src/index.js (CLI entry and arg handling), src/parse.js (the core parsing logic), test/ (behavior examples worth reading first).

Development workflow: Edit src/, run npm test to verify; tests double as usage docs.

Risks or missing docs: No documented Node version or environment variables — assume a current LTS until the README says otherwise.

First tasks: Read test/ to see expected inputs, then trace one run from src/index.js into src/parse.js.

Read the full file on GitHub · 42 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. 12d ago First seen · 42 lines · 73 tokens per session scan A cc3145de1ad1

Subscribe to this mod's changes

repo-onboarder is a skill published in the GitHub repository surfmind-space/awesome-surfmind (5 stars, last pushed 1mo ago), licensed MIT. It adds 73 tokens to every session and 688 once invoked, about $0.0004 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 2026-08-31.