Anki

Anki MCP Server

A Model Context Protocol (MCP) server that enables LLMs to interact with Anki flashcard software through AnkiConnect.

Features

Tools

• anki_check_connection - Check whether AnkiConnect is reachable
• anki_list_decks - List all available Anki decks, optionally with deck IDs
• anki_create_deck - Create a new Anki deck
• anki_list_tags - List all tags currently used in the collection
• anki_add_note_tags - Add tags to one or more notes
• anki_remove_note_tags - Remove tags from one or more notes
• anki_create_note - Create a new note
• anki_batch_create_notes - Create multiple notes at once
• anki_search_notes - Search for notes using Anki query syntax
• anki_get_note_info - Get detailed information about a note
• anki_update_note - Update an existing note's fields and/or tags
• anki_delete_note - Delete one or multiple notes
• anki_list_note_types - List all available note types
• anki_create_note_type - Create a new note type
• anki_get_note_type_info - Get detailed structure of a note type
• anki_sync - Trigger AnkiWeb sync; requires {"confirm": true} because a full sync can merge or overwrite local and remote collections. Success means Anki accepted the request, not that AnkiWeb received the data; a blocking dialog in Anki can silently keep the sync queued

Legacy unprefixed tool names such as create_note and list_decks remain callable for existing clients, but new agent integrations should use the anki_* names.

Resources

• anki://decks/all - Complete list of available decks with deck IDs
• anki://tags/all - Complete list of tags
• anki://note-types/all - List of all available note types
• anki://note-types/all-with-schemas - Detailed structure information for all note types
• anki://note-types/{modelName} - Detailed structure information for a specific note type

Prerequisites

1. Anki installed on your system
2. AnkiConnect add-on installed in Anki
3. Node.js 20.11 or newer

Configuration

Install via Desktop Extension (.mcpb)

This repository supports Anthropic Desktop Extensions (MCPB). The easiest way to use this server in Claude Desktop is by installing the packaged .mcpb bundle.

1. Generate the .mcpb file locally using the provided script:

npm run mcpb

2. Open Claude Desktop Settings → Extensions and drag the generated .mcpb file in, then click Install.

This validates manifest.json and outputs a .mcpb archive you can install as above. Learn more about Desktop Extensions in Anthropic's announcement: Desktop Extensions: One-click MCP server installation for Claude Desktop.

Usage with Claude Desktop

Add the server to your claude_desktop_config.json:

{
  "mcpServers": {
    "anki": {
      "command": "npx",
      "args": ["--yes", "anki-mcp-server"]
    }
  }
}

Using Custom AnkiConnect Port

If your AnkiConnect is running on a different port, you can specify it using the --port parameter:

{
  "mcpServers": {
    "anki": {
      "command": "npx",
      "args": ["--yes", "anki-mcp-server", "--port", "8080"]
    }
  }
}

Configuration for Cline

Add the server to your Cline MCP settings file inside VSCode's settings cline_mcp_settings.json

{
  "mcpServers": {
    "anki": {
      "command": "npx",
      "args": ["--yes", "anki-mcp-server"]
    }
  }
}

Using Custom AnkiConnect Port

For Cline, you can also specify a custom port:

{
  "mcpServers": {
    "anki": {
      "command": "npx",
      "args": ["--yes", "anki-mcp-server", "--port", "8080"]
    }
  }
}

Agent Skills (Claude Code)

Install the Anki skill to give Claude Code built-in knowledge of all Anki tools and workflows:

npx skills add nailuoGG/anki-mcp-server@anki

Once installed, Claude Code will automatically use the skill when you ask it to create flashcards, manage decks, or batch import notes.

Note: Do not use the .mcpb packaged version as the MCP server — it outputs Electron metadata to stdout which breaks the MCP stdio protocol. Use npx -y anki-mcp-server instead.

Development

Packaging a Desktop Extension (.mcpb)

Create a distributable Desktop Extension bundle for Claude Desktop:

npm run mcpb

This will build the project and generate a .mcpb archive from the current repository, validating manifest.json. Test by dragging it into Claude Desktop's Extensions settings. Reference: Desktop Extensions: One-click MCP server installation for Claude Desktop.

Publishing to MCP Registry

This server is automatically published to the MCP Registry when a new version is released. The publishing process includes:

1. Automated CI/CD: GitHub Actions automatically publishes to both NPM and MCP Registry on successful releases
2. Schema Validation: The server.json file is validated against the MCP schema before publishing
3. Version Synchronization: Versions are kept in sync between package.json, manifest.json, and server.json
4. Comprehensive Testing: Multi-version Node.js testing, linting, and validation before publishing
5. Beta Support: Automated beta releases for testing new features

Manual Validation

You can validate the MCP server configuration locally:

npm run validate-mcp

This will download the latest MCP schema and validate your server.json file.

Manual Publishing

If you need to publish manually, you can use the MCP Publisher CLI:

# Install MCP Publisher
curl -L "https://github.com/modelcontextprotocol/registry/releases/download/v1.1.0/mcp-publisher_1.1.0_$(uname -s | tr '[:upper:]' '[:lower:]')_$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/').tar.gz" | tar xz mcp-publisher
chmod +x mcp-publisher
sudo mv mcp-publisher /usr/local/bin/

# Login to MCP Registry
mcp-publisher login github-oidc

# Publish to MCP Registry
mcp-publisher publish

Setup

1. Install dependencies:

npm install

2. Build the server:

npm run build

3. For development with auto-rebuild:

npm run watch

Testing

Run the test suite:

npm test

This executes unit tests for MCP tool schemas, structured tool results, note creation, search/update/delete workflows, and error handling. These tests use mocked AnkiConnect clients; use MCP Inspector with a running Anki instance for manual integration checks.

MCP Evaluations

Read-only agent evaluation assets live in evals/. Load the fixture into a disposable Anki profile, then run the XML questions against the MCP server to verify that agents can discover decks, tags, note type schemas, resources, and structured tool results.

Debugging

Since MCP servers communicate over stdio, we recommend using the MCP Inspector:

npm run inspector

This provides a browser-based interface for:

• Monitoring MCP messages
• Testing tool invocations
• Viewing server logs
• Debugging communication issues

Example Usage

1. Create a new deck:

Create a new Anki deck called "Programming"

2. Add a basic card:

Create an Anki card in the "Programming" deck with:
Front: What is a closure in JavaScript?
Back: A closure is the combination of a function and the lexical environment within which that function was declared.

3. Add a cloze deletion card:

Create a cloze card in the "Programming" deck with:
Text: In JavaScript, {{c1::const}} declares a block-scoped variable that cannot be {{c2::reassigned}}.

4. Delete a single note:

Delete note ID 1234567890

5. Delete multiple notes at once:

Delete note IDs 1234567890, 9876543210, and 1122334455

6. Add tags to notes:

Add tags "review" and "mcp" to note IDs 1234567890 and 9876543210

Contributing

1. Fork the repository
2. Create your feature branch
3. Run tests: npm test
4. Submit a pull request

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Credits

Icon courtesy of macOS Icons

License

MIT License - see LICENSE file for details