Files
Julius Brussee b36219e2b1 chore(release): cut @caveman-ai/cli 1.3.3 on the bin-v1.1.6 runtime
Bump every BINARY_RELEASE pin to bin-v1.1.6 and regenerate the compiled
agent-skills bundle, which still carried the pre-ASD-STE100 caveman skill.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W2f7Lf7G9erA7YNn5SXPEj
2026-09-04 02:18:53 +02:00
..

caveman-mcp

The Caveman MCP server: five compression tools — caveman_compress, caveman_retrieve, caveman_stats, caveman_toon_encode, and caveman_toon_decode — over stdio, for any MCP host. It links the Caveman Engine in-process. Local-only (opens no network connection) and inferred-only (it never claims verified savings).

Install (Claude Code)

// .mcp.json / claude mcp config
{
  "mcpServers": {
    "caveman": { "command": "npx", "args": ["-y", "caveman-mcp"] }
  }
}

The MIT launcher downloads matching BSL-1.1 binary on first run, verifies key-signed checksum manifest plus artifact SHA-256, and caches it under ~/.caveman/bin. No Go toolchain or global Caveman install is required. To use an existing reviewed binary instead:

CAVEMAN_MCP_BIN=/path/to/caveman-mcp npx caveman-mcp

MIT applies to npm launcher. Downloaded binary follows BSL-1.1 terms named in BINARY_LICENSE.md.

Tools

Tool Input Returns
caveman_compress input (string) compressed text, inferred ratio, recovery_handle (null on pass-through)
caveman_retrieve recovery_handle (string) the byte-exact original; error on unknown handle
caveman_stats — session totals: tokens before/after, ratio, basis:"inferred", scope:"session"
caveman_toon_encode input (JSON string) explicit JSON→TOON result with sizes; pass-through plus note when not encodable
caveman_toon_decode input (TOON string) decoded JSON; error on invalid TOON

Compression is lossy (S4) but reversible: every drop is recoverable via caveman_retrieve. Incompressible or malformed input passes through unchanged with ratio:0 — never an error.