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Concisr

Token compression for AI contexts. Reduce token consumption by compressing conversation exchanges before they enter the LLM context window.

Deterministic, embedding-free compression. No external APIs, no GPU required.

Why?

Every token costs money. Most conversation context is filler — greetings, hedges, repeated data, verbose JSON. Concisr strips that noise before it hits the model, so you fit more signal into fewer tokens.

Related MCP server: SlimContext MCP Server

Tools

Tool

Purpose

Compression

digest_input

Strip incoming messages to essential signal

~25-95% depending on mode

compress_response

Compress outgoing responses with sentence truncation

Preserves voice and meaning

cache_reference

Gzip-compressed key-value store with TTL expiry

Store large text, retrieve on demand

session_stats

Real-time token savings dashboard

Track ROI across sessions

Compression Modes

Mode

Level

Strategy

checkin

~25%

Extract structured metrics (pain, sleep, energy, food, weight, stress)

task

~50%

Strip filler words, greetings, hedges

casual

~75%

Light structural compression

narrative

~95%

Preserve detail with minimal trimming

Content-type detection automatically applies JSON crushing, code comment stripping, or prose pass-through.

Quick Start

# Install via pip
pip install concisr

# Run locally
concisr

Or add to your MCP client config:

{
  "mcpServers": {
    "concisr": {
      "url": "https://concisr.mcpize.run/mcp"
    }
  }
}

Deployed

Live on MCPize — Free tier (500 req/mo) and Pro ($50/mo unlimited).

Storage

  • Cache DB: ~/.concisr/cache.db (SQLite, gzip-compressed blobs)

  • Stats: ~/.concisr/stats.json (persistent across sessions)

Author

Eric Ian Rodriguez

License

MIT

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