api-learn

A skill for collecting official documentation and examples for a project's library or framework, then saving them as project references.

In plain words
What is it for?
Learning an API, storing its documentation in .claude/references/, and registering it in CLAUDE.md.
Why use it?
It keeps the information an agent needs in the project instead of relying on scattered external documentation.

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/oozoofrog/oozoofrog-plugins/api-learn
Any agent
npx skills add oozoofrog/oozoofrog-plugins --skill api-learn
Clone the repo
git clone --depth 1 https://github.com/oozoofrog/oozoofrog-plugins

Made for: Claude Code, Codex.

Per session 132 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,442 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00132 $0.02442
Opus 5 $0.00066 $0.01221
Sonnet 5 $0.00026 $0.00488
Haiku 4.5 $0.00013 $0.00244

Measured yesterday against content hash d0e2a9ad2a08, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

api-learn 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/api-learn/skills/api-learn/SKILL.md · 233 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 233 lines · 132 tokens per session scan A d0e2a9ad2a08

Subscribe to this mod's changes

api-learn is a skill published in the GitHub repository oozoofrog/oozoofrog-plugins (2 stars, last pushed 3mo ago), with no licence file. It adds 132 tokens to every session and 2,442 once invoked, about $0.0007 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.

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