# Image Diff (MCP server)

> Image Diff is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. MCP server for programmatic image comparison and visual diff generation. It has 81 GitHub stars, is released under the MIT license and runs locally with npx -y @pulsemcp/image-diff-mcp-server.

A Model Context Protocol (MCP) server for programmatic image comparison and visual diff generation. Compares two images pixel-by-pixel, identifies clusters of visual differences, and generates heatmap visualizations.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/pulsemcp/mcp-servers |
| GitHub stars | 81 |
| License | MIT |
| Language | TypeScript |
| Transport | stdio |
| Packages | npm: @pulsemcp/image-diff-mcp-server |
| Remote URL | none |
| Needs API key | no |
| Official | yes |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Other |
| Latest release | monorepo-latest-placeholder@0.0.0 (Jul 3, 2025) |
| Last commit | Aug 30, 2026 |
| MCP registry name | com.pulsemcp/image-diff |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "image-diff": {
      "command": "npx",
      "args": [
        "-y",
        "@pulsemcp/image-diff-mcp-server"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio image-diff -- npx -y @pulsemcp/image-diff-mcp-server
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "image-diff": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@pulsemcp/image-diff-mcp-server"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "image-diff": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@pulsemcp/image-diff-mcp-server"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Tools

- `get_diff_of_images`: Compare two images and get structured diff results.
- `source_image`: string
- `target_image`: string
- `threshold`: number
- `include_aa`: boolean
- `min_cluster_size`: number
- `cluster_gap`: number
- `identical`: boolean indicating if images match
- `summary`: overall diff statistics (pixel counts, percentages, cluster count)
- `clusters`: array of diff regions with bounding boxes, severity ratings, and intensity metrics
- `clustering`: gap used, whether it was auto-computed, and suggested alternative gap values
- `alignment`: position coordinates, confidence score, strategy used, and timing
- `dimensions`: width and height of the compared region

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---

Canonical page: https://appsgit.com/mcp-servers/image-diff
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