PATK — PFC Agent Token Killer MCP Server

Compress noisy terminal output before it fills Claude's context. npm install, docker build, pytest — filtered down to what actually matters.

Why PATK?

Long coding sessions fill Claude's context with terminal noise. Each npm install dumps 150–200 lines of deprecation warnings and progress bars. That's ~10,000 tokens of pure noise per session — eating into your context window.

PATK filters that noise before Claude ever sees it.

Real benchmark (5-command session, Haiku API):

Real Haiku API benchmark. No spin — actual measured values.

What this means:

• Context fills up 2× slower in long sessions

• Claude's summarization is delayed → longer memory of early session details

• At CI/CD scale: meaningful API cost reduction

Related MCP server: mcp-context-guard

Works in Sub-Agents Too

Sub-agents (Task tool, Explore agents, parallel agents) have their own isolated context and their own separate API costs. PATK installed once works everywhere:

• Main agent context: protected

• Sub-agent context: also protected (independently)

• n8n pipelines: filter between nodes to halve accumulated data

Add to your Task tool prompts: "Use patk_safe_execute for all bash commands producing > 15 lines output"

Installation

1. Get your free API key

🔜 API keys not yet live. Watch this repo or open an issue to get notified when pfc-token-killer.com launches — 200 free credits, no payment required.

2. Install dependencies

pip install -r requirements.txt

3. Add to Claude Code MCP config

Claude Code (~/.claude.json or project .mcp.json):

{
  "mcpServers": {
    "patk": {
      "command": "python",
      "args": ["/path/to/server.py"],
      "env": {
        "PATK_API_KEY": "ptk_your_key_here"
      }
    }
  }
}

Or via CLI:

PATK_API_KEY=ptk_your_key_here claude mcp add patk python /path/to/server.py

That's it. No configuration. No extra dependencies beyond requirements.txt.

Tools

Example: patk_safe_execute

patk_safe_execute(command="npm install", max_lines=50)

→ npm install  [✅ Exit 0]
  ──────────────────────────────────────────────────
  added 847 packages in 12.3s
  [10× npm warn deprecated — run 'npm audit fix']
  // ✂ 80% reduction — 52→6 lines
  ---
  ⚡ PATK API  |  80% Reduktion  |  52 → 6 Zeilen  |  ~1,200 Tokens gespart

Filter Pipeline

1. ANSI removal — Strip colors, cursor codes

2. Progress bar detection — Remove [=====> ] 47%, ━━━━━━ 100%, download bars

3. Pattern condensation — Group similar lines: [10× npm warn deprecated], [15× pip Collecting/Downloading]

4. Duplicate compression — Identical lines → single summary

5. Timestamp clusters — 20 timestamp log lines → 1 summary

6. Entropy scoring — Remove low-information lines; always keep errors/warnings

Compatibility

Works with any MCP-compatible client:

• Claude Code (primary target)

• Cursor

• Cline

• Windsurf

• Any client supporting the MCP protocol

Pricing

1 credit = 1 filter call. Credits never expire. No subscriptions.

⏳ Paid plans not yet live. Free Starter tier available at launch. Pre-register now for +50% Early Bird bonus credits on paid plans.

Get your key

→ Register at pfc-token-killer.com (coming soon) → Or watch this repo — we'll announce here when keys go live

Questions / Support

→ Open an Issue — fastest way to reach us

Built by ForgeBuddy & Dante · 2026