o9k-core

A plugin that sets rules for using fewer agent tokens and coordinates other efficiency plugins. It activates when a session starts, checks dependencies for updates, and provides setup and orientation commands.

In plain words
What is it for?
It is for applying the o9k rules automatically, updating related dependencies, running guided setup with /o9k-init, and getting an introduction with /o9k-guide.
Why use it?
It helps keep efficiency-related tools from conflicting and reduces the need to configure the doctrine manually.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add Bumblebiber/its-over-9k
agentmods
npx agentmods add plugins/bumblebiber/its-over-9k/o9k-core
Clone the repo
git clone --depth 1 https://github.com/Bumblebiber/its-over-9k

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 5 skills, 1 hook cost 396 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

o9k-core 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.

plugins/o9k-core/.claude-plugin/plugin.json · 18 lines

What it actually says

{
  "name": "o9k-core",
  "displayName": "o9k Core",
  "version": "0.12.0",
  "description": "The o9k doctrine: token-efficiency rules of engagement and the arbitration layer that keeps efficiency plugins from colliding. Zero-effort: a SessionStart hook activates the doctrine automatically, checks dependencies for updates (npm o9k package + git marketplace channels; refreshes multi-CLI skills/hooks after apply), /o9k-init runs the guided setup, and /o9k-guide gives the human a personalized one-minute orientation.",
  "author": {
    "name": "Bumblebiber"
  },
  "repository": "https://github.com/Bumblebiber/its-over-9k",
  "license": "MIT",
  "keywords": [
    "token-efficiency",
    "claude-code",
    "meta-framework",
    "o9k"
  ]
}
Contents

What it installs

The manifest is a name and a version. 5 skills, 1 hook travel with it, and installing the plugin installs all of them — 396 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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 · 18 lines scan A a320cc13f1f3

Subscribe to this mod's changes

o9k-core is a plugin published in the GitHub repository Bumblebiber/its-over-9k (0 stars, last pushed 5d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.