GitLearn

GitLearn is a skill for Claude Code, Codex from RohiRIK/OpenLtm. It costs 38 tokens per session (715 once invoked), scanned A, original, MIT.

A tool that reads older Git commits and saves reusable lessons from them into long-term project memory. Git commits are recorded snapshots of changes made to a codebase.

In plain words
What is it for?
Use it when onboarding a repository, backfilling history after enabling memory, or collecting patterns from a completed sprint.
Why use it?
It helps an agent learn from project history when existing memory is empty or incomplete, without filling the main conversation with raw diffs. It can process the last commits or commits selected by count or date.

Skill for Claude CodeCodex

Part of the openltm plugin — 10 skills, 6 commands, 3 agents, 3 hooks shipped together

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/rohirik/openltm/gitlearn
Any agent
npx skills add RohiRIK/OpenLtm --skill gitlearn
Clone the repo
git clone --depth 1 https://github.com/RohiRIK/OpenLtm

Made for: Claude Code, Codex.

Or install openltm, the plugin that ships this one along with the rest of its 10 skills, 6 commands, 3 agents, 3 hooks.

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 GitLearn

README.md
[![agentmods](https://agentmods.dev/badge/skills/rohirik/openltm/gitlearn.svg)](https://agentmods.dev/skills/rohirik/openltm/gitlearn)
Your own site
<a href="https://agentmods.dev/skills/rohirik/openltm/gitlearn"><img src="https://agentmods.dev/badge/skills/rohirik/openltm/gitlearn.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 715 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 $0.00038 $0.00715
Opus 5 $0.00019 $0.00358
Sonnet 5 $0.00008 $0.00143
Haiku 4.5 $0.00004 $0.00072

Measured 5d ago against content hash b32c09e4d579, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

GitLearn 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 5d 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/GitLearn/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitLearn — Retroactive Git Commit Learning

Extract durable LTM memories from past git commits by delegating the read-and-extract work to the dedicated git-learner agent (shipped with this plugin). The agent reads the diffs and stores memories via the learn MCP tool, so this path needs no API key and keeps the main thread's context clean (raw diffs stay in the agent).

Scope

Invocation arg Commits processed
(none) last 10
--commits N last N
--since YYYY-MM-DD all commits since that date

When to Use

  • Onboarding a new project into LTM — seed memories from existing commit history.
  • Backfilling history after enabling gitLearnEnabled for the first time.
  • Harvesting reusable patterns after a productive sprint.

How It Works

The background post-commit hook (GitCommit.ts) calls an LLM API directly and needs a configured key. This skill runs interactively instead, so it spawns the git-learner agent via the Agent tool. Spawning an agent is valid here because skills execute in the live Claude Code session, which has the Agent tool available. The agent carries its own extraction rubric (signal-to-noise rules, category mapping, storage fields), so this skill only has to supply the scope.

Instructions for Claude

Step 1 — Resolve scope

Determine the commit range from the invocation arg (default: last 10). Capture the repo root so the subagent runs git in the right directory:

git rev-parse --show-toplevel
git log --pretty=format:'%H %s' -<N>   # or --since="<date>"

Step 2 — Spawn the git-learner agent once

Call the Agent tool once with subagent_type: "git-learner". A single agent processes the whole batch — do not spawn one per commit. The agent's system prompt already holds the extraction rubric, so the spawn prompt only supplies a <scope> block:

<scope>
REPO_ROOT: <repo root from git rev-parse --show-toplevel>
PROJECT_NAME: <repo directory basename>
COMMITS:
<one commit hash per line, from Step 1>
</scope>

Read the full file on GitHub · 79 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. 5d ago First seen · 79 lines · 38 tokens per session scan A b32c09e4d579

Subscribe to this mod's changes

GitLearn is a skill published in the GitHub repository RohiRIK/OpenLtm (26 stars, last pushed 4d ago), licensed MIT. It adds 38 tokens to every session and 715 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.

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