larrybrain

larrybrain is a skill for Claude Code from OllieWazza/LarryBrain-Skill. It costs 51 tokens per session (1,217 once invoked), scanned A, original, no licence file.

A marketplace for AI-agent skills. It lets an agent search for, download, and install skills from the LarryBrain library.

In plain words
What is it for?
Use it to browse available skills, find a missing capability, and install skills from LarryBrain.
Why use it?
It helps when the agent lacks a capability or when you need to find and add a skill instead of building one yourself.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the larrybrain plugin — 1 skill shipped together

Good fit Use it to browse available skills, find a missing capability, and install skills from LarryBrain.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/olliewazza/larrybrain-skill/larrybrain
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 OllieWazza/LarryBrain-Skill --skill larrybrain
Clone the repo
git clone --depth 1 https://github.com/OllieWazza/LarryBrain-Skill

Made for: Claude Code.

Or install larrybrain, the plugin that ships this one along with the rest of its 1 skill.

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 larrybrain

README.md
[![agentmods](https://agentmods.dev/badge/skills/olliewazza/larrybrain-skill/larrybrain.svg)](https://agentmods.dev/skills/olliewazza/larrybrain-skill/larrybrain)
Your own site
<a href="https://agentmods.dev/skills/olliewazza/larrybrain-skill/larrybrain"><img src="https://agentmods.dev/badge/skills/olliewazza/larrybrain-skill/larrybrain.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,217 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00051 $0.01217
Opus 5 $0.00026 $0.00609
Sonnet 5 $0.00010 $0.00243
Haiku 4.5 $0.00005 $0.00122

Measured 8d ago against content hash d659fd2f292c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

larrybrain scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "https://www.larrybrain.com/api/skills/search?q=QUERY&limit=10"
skills/larrybrain/SKILL.md · 143 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. 8d ago First seen · 143 lines · 51 tokens per session scan A d659fd2f292c

Subscribe to this mod's changes

larrybrain is a skill published in the GitHub repository OllieWazza/LarryBrain-Skill (22 stars, last pushed 5mo ago), with no licence file. It adds 51 tokens to every session and 1,217 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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