testwire_mcp 0.2.0

MCP server for AI agent control of Flutter integration tests via testwire.

testwire_mcp

MCP server that bridges AI agents to Flutter integration tests via testwire.

Testwire is a step-based integration test runner for Flutter, controlled by an AI agent through MCP. It lets an AI agent run, observe, debug, and modify Flutter integration tests in real time — with hot reload, step-by-step execution, and retry on failure.

This package is the MCP server — it connects your AI agent (Cursor, Claude Code, Copilot, Gemini CLI, etc.) to a running Flutter test process. For writing tests, add testwire_flutter to your app. See the full documentation for getting started.

How it works

┌──────────┐   MCP    ┌──────────────┐  VM Service  ┌─────────────────┐
│ AI Agent │ <------> │ testwire_mcp │ <----------> │ Flutter Test    │
│          │          │  (MCP server)│              │ (on device/sim) │
└──────────┘          └──────────────┘              └─────────────────┘

Installation

Globally:

dart pub global activate testwire_mcp

Or as a project dev dependency:

dart pub add dev:testwire_mcp

Configuration

The examples below use the global command testwire_mcp. If you installed it as a dev dependency, replace it with dart run testwire_mcp.

Cursor

Or manually add to .cursor/mcp.json:

{
  "mcpServers": {
    "testwire": {
      "command": "testwire_mcp"
    }
  }
}

Claude Code

claude mcp add --transport stdio testwire -- testwire_mcp

Gemini CLI

Add to ~/.gemini/settings.json:

{
  "mcpServers": {
    "testwire": {
      "command": "testwire_mcp"
    }
  }
}

Copilot

Add to mcp.json:

{
  "servers": {
    "testwire": {
      "command": "testwire_mcp"
    }
  }
}

Tools

Tool	Description
connect	Connect to a Flutter test process via its VM service URI.
disconnect	Disconnect from the test process; optionally terminate the app.
get_test_state	Return all steps with their statuses and the overall test status.
step_forward	Execute the next step and pause.
run_remaining	Run all remaining steps; pause only on failure or completion.
retry_step	Re-execute the current failed step after a fix.
hot_reload_testwire_test	Hot-reload the test process and re-enter the test body.
hot_restart_testwire_test	Full hot restart (requires reconnecting).
screenshot	Capture screenshots of all active render views as base64 PNG images.