AffinityMCP

The Universal MCP Server (Rust) exposes tools for Canva workflows—and Affinity Photo/Designer/Publisher automation—designed for natural language usage in MCP-compatible clients.

Features

• 🎨 Natural Language Control: Control Affinity applications using natural language commands

• 🖼️ File Operations: Open files, create new documents, export in various formats

• ⚡ 16-Parallel Processing: Process up to 16 files simultaneously for maximum efficiency

• 🔧 Advanced Tools: Apply filters, get document info, and more

• 🚀 Easy Setup: Simple setup for beginners with comprehensive documentation

• 🌐 Cross-Platform Ready: Currently macOS (AppleScript), Windows support planned

Quick Start

For beginners, see SETUP_GUIDE.md for detailed step-by-step instructions.

Quick installation:

# Build
cargo build --release
cp target/release/affinity-mcp dist/

# Use with Cursor
# Add to Cursor MCP settings:
{
  "mcpServers": {
    "affinity-mcp": {
      "command": "npx",
      "args": ["affinity-mcp"],
      "autoStart": true
    }
  }
}

Installation

Prerequisites

• Node.js 18+ (for the thin npx wrapper)

• Rust 1.76+ / Cargo (for local builds)

• Set AFFINITY_MCP_API_KEY if using Canva Connect/MCP endpoints.

Get an API key

• If your tools require Canva APIs, obtain credentials from the Canva developer console or MCP server guidance. Otherwise, you can skip this step.

Build locally

cd /path/to/affinity-mcp
cargo build --release
# copy target/release/affinity-mcp -> ./dist/
cp target/release/affinity-mcp dist/

Setup: Claude Code (CLI)

Use this one-liner (replace with your real values):

claude mcp add AffinityMCP -s user -e AFFINITY_MCP_API_KEY="sk-your-real-key" -- npx affinity-mcp

To remove:

claude mcp remove AffinityMCP

Setup: Cursor (Do not commit .cursor/mcp.json here)

Create the config in your client:

{
  "mcpServers": {
    "affinity-mcp": {
      "command": "npx",
      "args": ["affinity-mcp"],
      "env": { "AFFINITY_MCP_API_KEY": "sk-your-real-key" },
      "autoStart": true
    }
  }
}

Other Clients and Agents

code --add-mcp '{"name":"affinity-mcp","command":"npx","args":["affinity-mcp"],"env":{"AFFINITY_MCP_API_KEY":"sk-your-real-key"}}'

Follow the MCP install guide and reuse the standard config above.

• Command: npx

• Args: ["affinity-mcp"]

• Env: AFFINITY_MCP_API_KEY=sk-your-real-key

• Type: STDIO

• Command: npx

• Args: ["affinity-mcp"]

• Enabled: true

~/.config/opencode/opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "affinity-mcp": {
      "type": "local",
      "command": ["npx", "affinity-mcp"],
      "enabled": true
    }
  }
}

Add a new MCP and paste the standard JSON config.

See docs and reuse the standard config above.

Setup: Codex (TOML)

Example (Serena):

[mcp_servers.serena]
command = "uvx"
args = ["--from", "git+https://github.com/oraios/serena", "serena", "start-mcp-server", "--context", "codex"]

This server (minimal):

[mcp_servers.affinity-mcp]
command = "npx"
args = ["affinity-mcp"]

# Optional environment variables:
# AFFINITY_MCP_API_KEY = "sk-your-real-key"
# MCP_NAME = "affinity-mcp"

Configuration (Env)

• AFFINITY_MCP_API_KEY: Canva API key or token (if applicable)

• MCP_NAME: Server name override (default: affinity-mcp)

If your tools are purely local, no API keys are required.

Available Tools

Affinity Tools (Natural Language Support)

All Affinity tools support natural language commands. Examples:

• "Open the file /path/to/image.jpg in Affinity Photo"

• "Create a new document with width 1920 and height 1080"

• "Export the current document as PDF to /path/to/output.pdf"

affinity.open_file

Open a file in Affinity application (auto-detects app from file extension).

• inputs: { "path": string, "app"?: "Photo"|"Designer"|"Publisher" }

• outputs: { "opened": boolean, "app": string, "path": string }

affinity.create_new

Create a new Affinity document.

• inputs: { "app": "Photo"|"Designer"|"Publisher", "width"?: number, "height"?: number }

• outputs: { "created": boolean, "app": string }

affinity.export

Export the currently open document.

• inputs: { "path": string, "format": "pdf"|"png"|"jpg"|"tiff"|"svg", "quality"?: number }

• outputs: { "exported": boolean, "path": string }

affinity.apply_filter

Apply a filter to the current document.

• inputs: { "filter_name": string, "intensity"?: number }

• outputs: { "applied": boolean, "filter_name": string }

affinity.get_active_document

Get information about the currently active document.

• inputs: {}

• outputs: { "is_open": boolean, "name"?: string, "path"?: string }

affinity.close_document

Close the currently open document.

• inputs: {}

• outputs: { "closed": boolean }

affinity.batch_open_files ⚡ 16-Parallel

Open multiple files simultaneously (up to 16 files in parallel).

• inputs: { "paths": string[], "app"?: "Photo"|"Designer"|"Publisher" }

• outputs: { "success_count": number, "failure_count": number, "results": OpenFileResult[] }

Natural language example: "Open multiple files: /path/to/image1.jpg, /path/to/image2.jpg, /path/to/image3.jpg"

affinity.batch_export ⚡ 16-Parallel

Export multiple documents simultaneously (up to 16 exports in parallel).

• inputs: { "exports": ExportParams[] }

• outputs: { "success_count": number, "failure_count": number, "results": ExportResult[] }

Natural language example: "Export all open documents as PDF files"

Canva Tools

canva.create_design

• inputs: { "title": string, "template_id"?: string, "width"?: number, "height"?: number }

• outputs: { "design_id": string, "url"?: string }

Example Usage

Natural Language Commands

In Cursor or other MCP-compatible clients, you can use natural language:

Example 1: Open a file

User: "Open /Users/john/Desktop/image.jpg in Affinity Photo"
AI: [Calls affinity.open_file with path="/Users/john/Desktop/image.jpg", app="Photo"]

Example 2: Create and export

User: "Create a new Affinity Photo document with size 1920x1080, then export it as PDF to my Desktop"
AI: [Calls affinity.create_new, then affinity.export]

Example 3: Get document info

User: "What document is currently open?"
AI: [Calls affinity.get_active_document]

Example 4: Batch operations (16-parallel)

User: "Open these 5 images simultaneously: /path/to/img1.jpg, /path/to/img2.jpg, /path/to/img3.jpg, /path/to/img4.jpg, /path/to/img5.jpg"
AI: [Calls affinity.batch_open_files with paths array]

Example 5: Batch export (16-parallel)

User: "Export all open documents as PDF files to the Desktop"
AI: [Calls affinity.batch_export with multiple export configurations]

Direct Tool Invocation (MCP tool call)

{
  "type": "tool",
  "name": "affinity.open_file",
  "arguments": {
    "path": "/path/to/image.jpg",
    "app": "Photo"
  }
}

Documentation

• SETUP_GUIDE.md: Beginner-friendly setup guide with step-by-step instructions

• SPEC.md: Technical specification (Japanese)

• README.md: This file (English documentation)

For complex schemas, see src/tools/*.rs.

Name Consistency & Troubleshooting

Always use CANONICAL_ID (affinity-mcp) for identifiers and keys.

Use CANONICAL_DISPLAY (AffinityMCP) only for UI labels.

Do not mix legacy keys after registration.

Consistency Matrix

• npm package name → affinity-mcp

• Binary name → affinity-mcp

• MCP server name → affinity-mcp

• Env default MCP_NAME → affinity-mcp

• Client registry key → affinity-mcp

• UI label → AffinityMCP

Conflict Cleanup

Remove stale keys and re-add with affinity-mcp only.

Cursor is UI-configured only; this repo intentionally omits .cursor/mcp.json.