ZpDIC MCP Server

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An MCP server that allows ChatGPT to use the ZpDIC API.

Prerequisites

• Node.js and npm
• A ZpDIC API key
• An ngrok account and authtoken

Installation

Clone this repository and install the dependencies:

git clone https://github.com/Eskartur/ZpDIC-MCP.git
cd zpdic-mcp
npm install

Environment Variables

Create a .env file in the project root:

ZPDIC_API_KEY=your_zpdic_api_key_here
NGROK_AUTHTOKEN=your_ngrok_authtoken_here

Getting ZPDIC_API_KEY

Log in to your ZpDIC account, open your user page, and go to the Developer tab to create or copy your API key.

Keep this key private because it allows the server to read and modify dictionary data through your ZpDIC account.

Getting NGROK_AUTHTOKEN

Create or log in to an ngrok account, then open Your Authtoken in the ngrok dashboard and copy it into NGROK_AUTHTOKEN.

The server uses this token to create a public HTTPS tunnel for your local MCP server.

Run the Server

Start the server with npm:

npm start

The server listens locally on port 6767 and prints output similar to:

Server running on http://localhost:6767
MCP available at: https://example.ngrok-free.app/mcp

Copy the full MCP available at URL, including the /mcp path.

Add to ChatGPT

In ChatGPT settings, open Apps -> Create app. Use the public ngrok URL printed by the server as the server URL:

https://example.ngrok-free.app/mcp

After saving it, ChatGPT can use the ZpDIC tools exposed by this server.

Tools

This MCP server provides the following tools:

• get_word_by_number: Retrieves a single word entry by its word number.
• search_words: Searches word entries in a dictionary.
• create_word: Creates a new word entry in a dictionary.
• delete_word: Deletes a word entry by its word number.
• overwrite_word: Overwrites a word entry by its word number. Fields omitted from the new data are cleared.
• get_example_sentences: Retrieves example sentences for a word by its word number.

All tools share the same ZpDIC API rate limit (10 requests per minute). The MCP server automatically waits when needed and retries requests after rate limit responses.

Notes

• Keep the terminal running while using the ChatGPT app.
• The ngrok URL stays the same when you use the same ngrok account.
• Do not commit your .env file or share your API keys.