@meeseeks-sdk/mcp

MCP server for Claude Code — makes the AI verify its own code before giving it to you.

What it does

Instead of Claude Code giving you the first code it generates, this MCP runs a quality gate:

Claude Code calls quality_gate tool
        ↓
LLM generates code
        ↓
Sandbox executes it (real Node.js subprocess)
        ↓
Score 0-10 based on correctness + efficiency
        ↓
Score ≥ 8? → return verified code
Score < 8? → feed failures back to LLM → retry

You get code that already survived real execution — not just what looked good at first glance.

Install

npm install -g @meeseeks-sdk/mcp

Setup with Claude Code

claude mcp add meeseeks --scope user npx @meeseeks-sdk/mcp

That's it. The quality_gate tool is now available in all your Claude Code sessions.

Tell Claude when to use it

Add to your project's CLAUDE.md or ~/.claude/CLAUDE.md:

## Code Generation

When writing isolated utility functions or algorithms (any language),
use the meeseeks__quality_gate tool instead of writing directly.
Use mode: "fast" if the pattern was used before, "balanced" for new tasks.
For Dart/Flutter/Python code: always pass harness: "free".
For JS/Node.js utilities: omit harness (auto-detected).

Tool: quality_gate

Parameter	Type	Default	Description
task	string	required	What to build — be specific about function signature and export format
mode	fast|balanced|quality	fast	fast=1 iter, balanced=3, quality=5
harness	string	auto-detected	js-api, js-lrucache, js-ratelimiter, js-circuitbreaker, js-promisepool, js-maze, js-sudoku, js-wordle, free
projectContext	string	—	Stack description for the judge: "TypeScript + Express + PostgreSQL"
minScore	number	8	Stop when score ≥ this value

Requirements

• Node.js 18+
• AWS credentials configured (~/.aws/credentials) for Bedrock adapter
• Or set AWS_REGION environment variable

Knowledge inheritance

The MCP stores winning strategies in ~/.meeseeks/memory.db (SQLite). Next time you ask for a similar function, the proven approach is injected into the prompt — better first attempts over time.

Powered by

@meeseeks-sdk/core — the quality gate engine extracted from Meeseeks Hive.

License

MIT