caveman

caveman is a plugin for Claude Code from Manikantareddy941-hash/-caveman. Its manifest loads nothing; the 6 skills it bundles cost 457 tokens per session together, scanned A, original, MIT.

A plugin that changes the agent’s communication into a highly compressed, caveman-like style. It uses session-start and prompt hooks to activate and track that mode.

In plain words
What is it for?
Changing how the agent responds and tracking the compressed communication mode across prompts.
Why use it?
It reduces the amount of text used while aiming to preserve technical information.

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 Manikantareddy941-hash/-caveman
agentmods
npx agentmods add plugins/manikantareddy941-hash/-caveman/caveman
Clone the repo
git clone --depth 1 https://github.com/Manikantareddy941-hash/-caveman

Made for: Claude Code.

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 caveman

README.md
[![agentmods](https://agentmods.dev/badge/plugins/manikantareddy941-hash/-caveman/caveman.svg)](https://agentmods.dev/plugins/manikantareddy941-hash/-caveman/caveman)
Your own site
<a href="https://agentmods.dev/plugins/manikantareddy941-hash/-caveman/caveman"><img src="https://agentmods.dev/badge/plugins/manikantareddy941-hash/-caveman/caveman.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 6 skills cost 457 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

caveman 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 4d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • caveman — 100% identical, 4 lines differ
.claude-plugin/plugin.json · 35 lines

What it actually says

{
  "name": "caveman",
  "description": "Ultra-compressed communication mode. Cuts ~75% of tokens while keeping full technical accuracy by speaking like a caveman.",
  "author": {
    "name": "Julius Brussee",
    "url": "https://github.com/JuliusBrussee"
  },
  "hooks": {
    "SessionStart": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "node \"${CLAUDE_PLUGIN_ROOT}/hooks/caveman-activate.js\"",
            "timeout": 5,
            "statusMessage": "Loading caveman mode..."
          }
        ]
      }
    ],
    "UserPromptSubmit": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "node \"${CLAUDE_PLUGIN_ROOT}/hooks/caveman-mode-tracker.js\"",
            "timeout": 5,
            "statusMessage": "Tracking caveman mode..."
          }
        ]
      }
    ]
  }
}
Contents

What it installs

The manifest is a name and a version. 6 skills travel with it, and installing the plugin installs all of them — 457 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 35 lines scan A 77e448b7b70c

Subscribe to this mod's changes

caveman is a plugin published in the GitHub repository Manikantareddy941-hash/-caveman (31 stars, last pushed 4mo 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 2026-08-30.