LingQ Progress MCP for ChatGPT

A tiny read-only MCP server that lets ChatGPT inspect your LingQ progress without receiving your LingQ password.

What it exposes

• list_languages — active LingQ languages and the data LingQ returns for them (including known-word totals when available).

• inspect_progress_capabilities — asks LingQ which progress intervals/metrics are currently available.

• get_progress_summary — aggregate progress for a period.

• get_progress_chart — time-series data for a specific metric and period.

The server only performs HTTP GET requests to LingQ.

Related MCP server: ChatGPT Codex Bridge

1. Requirements

• Node.js 18 or newer

• A LingQ account

• Your LingQ API key

Get your LingQ API key while logged in:

https://www.lingq.com/en/accounts/apikey/

Do not send the key to anyone. Keep it in the local .env file.

2. Configure

Open a terminal in this folder and run:

npm install

Copy .env.example to .env.

Windows PowerShell:

Copy-Item .env.example .env
notepad .env

Put your key after LINGQ_API_KEY= and save.

3. Run locally

npm start

You should see:

LingQ Progress MCP listening on http://localhost:8787/mcp

Opening http://localhost:8787/ in a browser should show a simple health message.

4. Test with MCP Inspector (recommended)

In a second terminal:

npx @modelcontextprotocol/inspector@latest

Choose Streamable HTTP and connect to:

http://localhost:8787/mcp

Call list_languages first. If it returns your LingQ languages, the key and LingQ API are working.

5. Make it reachable by ChatGPT

For a quick local test, expose port 8787 through an HTTPS tunnel such as ngrok:

ngrok http 8787

It will give you an HTTPS address. Add /mcp to the end, for example:

https://example.ngrok.app/mcp

In ChatGPT, enable Developer mode, create/add a custom plugin/MCP connection, and paste that HTTPS /mcp URL.

Then you can ask things like:

• "Como tá meu russo no LingQ essa semana?"

• "Quantas palavras conhecidas eu tenho em russo e japonês?"

• "Compara meu progresso dos últimos 7 e 30 dias."

• "Quanto tempo eu ouvi neste mês?"

• "Mostra quais dias eu mais li esta semana."

Security notes

• The LingQ API key stays on the computer/server running this project.

• The MCP responses never intentionally include the API key.

• All LingQ calls in this project are GET requests only.

• Do not commit .env to Git; it is already included in .gitignore.

LingQ API caveat

LingQ's public API documentation is incomplete/outdated. The project therefore includes inspect_progress_capabilities, which asks the live LingQ progress endpoint what it currently supports instead of assuming every metric name forever.