First 10 Moves

First 10 Moves is a skill for Claude Code, Codex from wrg32786/aigent-os. It costs 57 tokens per session (1,057 once invoked), scanned A, original, MIT.

A step-by-step checklist for entering an unfamiliar codebase and understanding it before changing anything.

In plain words
What is it for?
Use it when investigating bugs, tracing code, locating modules, or making changes in an area you do not know.
Why use it?
It reduces unnecessary questions by helping you find answers in the project’s files, documentation, and structure first.

Skill for Claude CodeCodex

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

Good fit Use it when investigating bugs, tracing code, locating modules, or making changes in an area you do not know.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wrg32786/aigent-os/first-10-moves
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 wrg32786/aigent-os --skill first-10-moves
Clone the repo
git clone --depth 1 https://github.com/wrg32786/aigent-os

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 First 10 Moves

README.md
[![agentmods](https://agentmods.dev/badge/skills/wrg32786/aigent-os/first-10-moves/github.svg)](https://agentmods.dev/skills/wrg32786/aigent-os/first-10-moves)
Your own site
<a href="https://agentmods.dev/skills/wrg32786/aigent-os/first-10-moves"><img src="https://agentmods.dev/badge/skills/wrg32786/aigent-os/first-10-moves/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 First 10 Moves

Your own site · 80×15
<a href="https://agentmods.dev/skills/wrg32786/aigent-os/first-10-moves"><img src="https://agentmods.dev/badge/skills/wrg32786/aigent-os/first-10-moves.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,057 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 $0.00057 $0.01057
Opus 5 $0.00028 $0.00528
Sonnet 5 $0.00011 $0.00211
Haiku 4.5 $0.00006 $0.00106

Measured 8d ago against content hash 82234428f4b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

First 10 Moves 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 8d 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/first-10-moves/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

First 10 Moves

When dropped into an unfamiliar codebase or asked to fix something in code you don't know — run this sequence before doing anything else. The principle: most "clarification" questions are answered by 5 minutes in the relevant file. If the answer is in the code, the docs, or the file tree — find it there before asking.

When to use

  • Fresh in an unfamiliar codebase
  • Asked to fix or change code in an area you haven't worked in
  • Tempted to ask "where does X live?" or "how does Y work?"
  • Triggered by Caddy on prompts like: "fix the X", "investigate", "trace this bug", "how does X work", "unfamiliar codebase", "where is X defined", "what calls Y", "navigate the code", "find the bug in"

The sequence (run top-to-bottom)

1. Re-read the user's request

Look for clues. "Fix" implies a bug. "The headline generator" implies a named module. Note any screenshots, errors, or examples included. The exact phrasing embeds most of the diagnosis — don't abstract it away.

2. Get the lay of the land (~30 seconds)

  • List project root
  • Identify main source directory
  • Read package.json / pyproject.toml / Cargo.toml (whatever the manifest is)
  • Read README if short

This rules out a lot. You learn the language, framework, build system, and entry point in 30 seconds.

3. Search for the keyword across the project

One ripgrep, filtered to relevant extensions. The matches will cluster around the real module.

4. Pick the most likely 2-3 matched files

Filenames are huge signal. aiHeadlineGenerator.ts beats headlineUtils.test.ts. Production code beats test code. Implementation beats type definitions.

5. Read the public surface of the top candidate

Imports + exports, not bodies. Shape first. What does this module take in and put out? What does it depend on?

6. Find the entry point — who calls this?

Search for the main exported function name. Call sites tell you how the module fits into the larger pipeline.

7. Read one upstream call site fully

Concrete example of "what inputs does this receive in real use?" That constrains everything downstream. Don't read 5 call sites — one is usually enough.

Read the full file on GitHub · 87 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. 8d ago First seen · 87 lines · 57 tokens per session scan A 82234428f4b0

Subscribe to this mod's changes

First 10 Moves is a skill published in the GitHub repository wrg32786/aigent-os (18 stars, last pushed yesterday), licensed MIT. It adds 57 tokens to every session and 1,057 once invoked, about $0.0003 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 2026-09-01.