Announcing stryker-mcp-reporter v1.12.0: 100% Mutation Score & Native MCP for AI Coding Agents

#mcp #testing #typescript #ai

Standard code coverage measures execution, not test strength. AI coding assistants generate hundreds of lines of unit tests, but often fall into the "happy path bias".

With stryker-mcp-reporter v1.12.0, AI pair programmers (Antigravity, Cursor, Claude Desktop, Roo Code, Cline) can autonomously execute mutation tests, inspect survived mutants via Model Context Protocol (MCP), write exact edge-case tests, and achieve a verified 100% Mutation Score.

🌟 What's New in v1.12.0

Bug Fixes

resolve CJS/ESM interop in e2e tests (3bd8b93)
resolve TS errors in database.adapter and missing types for better-sqlite3 (03cff58)
serve public webapp directory on MCP express server (73fe00c)
use correct stryker incremental flag in CI (7405fb1)

Features

integrate SQLite database for runs and history (530f5a7)
ui: add E2E data-testids and improve a11y across dashboard (a9a289b)

📸 Real Runtime Proof

Below are unedited runtime screenshots captured directly from active test executions:

⚡ How to Connect to Your AI Tool

Add this single JSON block to your MCP config:

{
  "mcpServers": {
    "stryker-mutation-testing": {
      "command": "npx",
      "args": ["-y", "--silent", "stryker-mcp-reporter"]
    }
  }
}

(Windows users: Use "command": "cmd.exe" with "args": ["/c", "npx", "-y", "--silent", "stryker-mcp-reporter"]).

Check out the full open-source project on GitHub: https://github.com/kluth/stryker-mcp-reporter

DEV Community