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How to use Caveman: what you can do with it

What is Caveman? Caveman is a skill and proxy for coding agents that cuts tokens by making the agent talk tersely and read less, while code stays exact. The README reports 33.2% fewer input tokens across 54 Claude Code runs and links an Adobe Research paper on caveman-style output; it also links a page listing every case where caveman loses. It installs as a skill, a Claude Code plugin, a Gemini CLI extension or an all-agents installer, with an optional free Auto model router.

How do I use it? Install for every agent with npx skills add JuliusBrussee/caveman -g; then Or in Claude Code: /plugin marketplace add JuliusBrussee/caveman then /plugin install caveman@caveman; type /caveman ($caveman in Codex) if it does not start on its own; /ultracave is even shorter. Full steps below.

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What do you want to do?

3 use cases

Quick start with Caveman

  1. Check you have what it needs: A coding agent such as Claude Code, Codex or Gemini CLI; Node.js for the npx installs (22.13+ for the all-agents installer).
  2. Open JuliusBrussee/caveman on GitHub and read the README and license.
  3. Install for every agent with npx skills add JuliusBrussee/caveman -g
  4. Or in Claude Code: /plugin marketplace add JuliusBrussee/caveman then /plugin install caveman@caveman
  5. Type /caveman ($caveman in Codex) if it does not start on its own; /ultracave is even shorter
  6. Say stop caveman to go back to normal

These steps come from our top use case, Cut your coding agent's token use with one skill, which also has a copy-paste agent prompt.

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Using the Deduped MCP, get the setup steps for JuliusBrussee/caveman

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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Caveman alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forDevelopers who pay per token for Claude Code, Codex or Gemini CLI and want shorter answers and smaller context without losing correctness.
  • Why it is hot115k stars, talked about in 2 AI sources we track
  • LanguageGo
  • Sourcegithub.com/JuliusBrussee/caveman · Back to Hot repos

Requirements

  • A coding agent such as Claude Code, Codex or Gemini CLI
  • Node.js for the npx installs (22.13+ for the all-agents installer)

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Questions about Caveman

What is Caveman?

Caveman is a skill and proxy for coding agents that cuts tokens by making the agent talk tersely and read less, while code stays exact. The README reports 33.2% fewer input tokens across 54 Claude Code runs and links an Adobe Research paper on caveman-style output; it also links a page listing every case where caveman loses. It installs as a skill, a Claude Code plugin, a Gemini CLI extension or an all-agents installer, with an optional free Auto model router. It is an open-source project on GitHub: https://github.com/JuliusBrussee/caveman.

How do I use Caveman?

Install for every agent with npx skills add JuliusBrussee/caveman -g; then Or in Claude Code: /plugin marketplace add JuliusBrussee/caveman then /plugin install caveman@caveman; type /caveman ($caveman in Codex) if it does not start on its own; /ultracave is even shorter. The use cases on this page give the full steps and a copy-paste agent prompt for each job.

Who is Caveman for?

Developers who pay per token for Claude Code, Codex or Gemini CLI and want shorter answers and smaller context without losing correctness.

What can I do with Caveman?

3 use cases so far, for example: Cut your coding agent's token use with one skill; Shrink what your agent reads: logs, test output and web pages; Add Caveman to Gemini CLI as an extension. Each has steps and a copy-paste agent prompt.

What do I need to run Caveman?

A coding agent such as Claude Code, Codex or Gemini CLI; Node.js for the npx installs (22.13+ for the all-agents installer).

What are alternatives to Caveman?

Other hot AI repos in Software and DevOps: Deep Infer, Harness2, Orca, Opencode, Graphify.

Is Caveman safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.