deepinit

A tool for creating or updating guidance files that tell coding agents how a repository is organized and maintained.

In plain words
What is it for?
Inspecting a repository and documenting its structure, languages, build and test commands, subsystem conventions, and known risks.
Why use it?
It preserves project-specific commands, conventions, and hazards so future agents can work with the repository correctly.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jmstar85/oh-my-githubcopilot/deepinit
Any agent
npx skills add jmstar85/oh-my-githubcopilot --skill deepinit
Clone the repo
git clone --depth 1 https://github.com/jmstar85/oh-my-githubcopilot

Made for: Claude Code, Codex.

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 197 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00032 $0.00197
Opus 5 $0.00016 $0.00098
Sonnet 5 $0.00006 $0.00039
Haiku 4.5 $0.00003 $0.00020

Measured 2d ago against content hash fd23fcf5e385, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deepinit 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 2d 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.

.github/skills/deepinit/SKILL.md · 30 lines

What it actually says

Deepinit

Use this skill to analyze a repository and create durable agent-facing guidance for future work.

Workflow

  1. Map the repository structure, languages, build/test commands, and major subsystems.
  2. Identify local conventions and hazards that future agents must know.
  3. Write or update guidance files at the narrowest useful scope.
  4. Avoid duplicating stale or generic instructions.
  5. Verify references and commands where practical.

Output

  • Files created or updated
  • Repository conventions captured
  • Commands verified
  • Areas intentionally left undocumented

Rules

  • Prefer specific, local facts over generic coding advice.
  • Do not overwrite human-authored guidance without preserving intent.
  • Keep guidance concise enough to be loaded repeatedly.
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. 2d ago First seen · 30 lines · 32 tokens per session scan A fd23fcf5e385

Subscribe to this mod's changes

deepinit is a skill published in the GitHub repository jmstar85/oh-my-githubcopilot (153 stars, last pushed 3mo ago), licensed MIT. It adds 32 tokens to every session and 197 once invoked, about $0.0002 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.

Related

Other skills, from other repositories