Announcing stryker-mcp-reporter v1.16.0: 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 v1.16.0, 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 v1.16.0

Bug Fixes

deps: correct stryker peerDependencies and downgrade typescript to 5.6 (9d36f3b)
resolve architecture and security flaws in Event Bus (d5c030f)
security: resolve npm vulnerabilities, remove unused variables, and fix unawaited promise in mcp-server.adapter.ts (ecfb8c2)

Features

AST-based Incremental Mutant Cache (4e89804)
Coverage Gap Analysis (0853df4)
implement Event Bus system (0dbb2d9)
implement git blame attribution for surviving mutants (8a95bdb)
implement massive agentic network and pipeline optimization (4cc0459)
Mutant Flakiness Tracker (207025b)

📸 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

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