JuliusBrussee

Cavemem — Development skill for Claude Code

Development community

Frozen — cross-agent persistent memory for coding assistants.

How to install Cavemem

This entry records only its repository, not the path inside it, so there is no exact command to give. Open JuliusBrussee/cavemem and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Cavemem does

Frozen — cross-agent persistent memory for coding assistants. Still works; the compressed-memory core now ships inside JuliusBrussee/caveman.

Alternatives in Development

Zeroshot — Runs coding agents as a graph: one agent implements, independent agents review, failures go to repair, and not 1.9k ★
Project Memory: AgentSys — Cross-tool compatible: Works across all 5 platforms - Claude Code, OpenCode, Codex CLI, Cursor, and Kiro 622 ★
Caveman Claude Skill — Ultra-compressed communication mode for Claude 396 ★

README

![](https://em-content.zobj.net/source/apple/391/rock_1faa8.png)

cavemem

**why agent forget when agent can remember**

[![npm](https://img.shields.io/npm/v/cavemem?style=flat&color=yellow)](https://www.npmjs.com/package/cavemem) [![Stars](https://img.shields.io/github/stars/JuliusBrussee/cavemem?style=flat&color=yellow)](https://github.com/JuliusBrussee/cavemem/stargazers) [![Last Commit](https://img.shields.io/github/last-commit/JuliusBrussee/cavemem?style=flat)](https://github.com/JuliusBrussee/cavemem/commits/main) [![License](https://img.shields.io/github/license/JuliusBrussee/cavemem?style=flat)](LICENSE)

[Install](#install) • [How it works](#how-it-works) • [CLI](#cli) • [MCP](#mcp) • [Settings](#settings)

**Status: frozen (August 2026).** cavemem is no longer in active development. Everything below still installs and works, but expect no new features or fixes. Its compressed-memory core lives on inside [caveman](https://github.com/JuliusBrussee/caveman) — the actively developed home of the family, alongside [caveman-browse](https://github.com/JuliusBrussee/caveman-browse).

Cross-agent persistent memory for coding assistants. Hooks fire at session boundaries, compress observations with the caveman grammar (~75% fewer prose tokens, code and paths preserved byte-for-byte), and write to local SQLite. Agents query their own history through three MCP tools. No network. No cloud.

**Supports:** Claude Code · OpenCode · Codex · GitHub Copilot · Augment Code · Cursor (query-only) · Gemini CLI (query-only) · Antigravity (query-only) · IBM Bob (query-only)

Persistent memory across sessions. Hooks capture what happened; the store keeps it.
Compressed at rest. Deterministic caveman grammar, round-trip-guaranteed expansion for humans.
Progressive MCP retrieval. search, timeline, get_observations — agents filter before fetching.
Hybrid search. SQLite FTS5 keyword + local vector index, combi