MCP server for dyscalculia statistics

Connect Claude Code

Add the hosted URL with one command. A local install works too.

1. Run the command in a terminal. --scope user makes the server available in all your projects; without it the server only applies to the current project.
2. claude mcp list should show the server as Connected. Inside Claude Code, /mcp shows the same status.
3. To share the server with a team, use --scope project: the command writes a .mcp.json file in the project root that you can commit.

claude mcp add --transport http --scope user dyscalculia https://mcp.dyscalculia.io/mcp

claude mcp add --scope user dyscalculia -- npx -y dyscalculia-mcp

{
  "mcpServers": {
    "dyscalculia": {
      "type": "http",
      "url": "https://mcp.dyscalculia.io/mcp"
    }
  }
}

claude mcp list
claude mcp get dyscalculia
claude mcp remove dyscalculia

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

The -- separates Claude's own options from the command that starts the server. Keep it in the npx line.

Source: Claude Code: MCP

Connect Claude (claude.ai and Desktop)

A remote server is added as a custom connector. It needs the hosted URL; npx does not work here.

1. Pro and Max: open the + menu in the chat box, choose Add custom connector, paste the URL below and press Add. No sign-in is needed, so leave the OAuth fields under Advanced settings empty.
2. Team and Enterprise: an Owner first adds the connector in the organization's Connectors settings: Add → Custom → Web. Members then find it in their list and press Connect.
3. Open a new chat, switch the connector on and try the check prompt further down this page.

https://mcp.dyscalculia.io/mcp

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Menu names in Claude change from time to time. If you do not see the option, search Claude's help for custom connectors. Anthropic warns on its own page that custom connectors can reach unverified services.

Source: Claude help: custom connectors (remote MCP)

Connect Claude Desktop (local)

To run the server on your own machine with npx, add it to Claude Desktop's config file.

1. From the Claude menu open Settings → Developer → Edit Config. The file is ~/Library/Application Support/Claude/claude_desktop_config.json on macOS and %APPDATA%\Claude\claude_desktop_config.json on Windows.
2. Add the block below inside mcpServers. If the file already has other servers, add only the dyscalculia entry.
3. Quit Claude Desktop completely and reopen it. The server appears under the + menu in the chat box, Connectors → Manage connectors.

{
  "mcpServers": {
    "dyscalculia": {
      "command": "npx",
      "args": ["-y", "dyscalculia-mcp"]
    }
  }
}

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

If it does not connect, read the logs: ~/Library/Logs/Claude/mcp*.log on macOS, %APPDATA%\Claude\logs on Windows. Node.js must be installed (node --version).

Source: MCP: connect to local servers

Connect ChatGPT

Only a remote (hosted) server works. ChatGPT cannot start a local npx process.

1. In ChatGPT Settings, turn on Developer mode. The switch is usually under Apps / Connectors → Advanced, and under Security on some accounts.
2. On the connectors page press Create. Use Dyscalculia.io as the name, one sentence as the description (for example Dyscalculia prevalence figures and study sources) and the URL below.
3. Choose No authentication, tick the trust box and create the connector.
4. In a new chat, enable the connector from the tools menu.

https://mcp.dyscalculia.io/mcp

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Which plans include Developer mode, and its menu names, change on OpenAI's side. On Business and Enterprise an admin may have to allow custom connectors. None of the tools writes anything; all six are read-only.

Source: Adding a remote MCP server to ChatGPT (Auth0 guide)

Connect Codex

The Codex CLI and the IDE extension read the same config.toml. Use --url for hosted, npx for local.

1. Run one of the commands. Codex writes the configuration to ~/.codex/config.toml.
2. To edit by hand, add a [mcp_servers.dyscalculia] table to that file. For a per-project setup, put the table in .codex/config.toml at the root of a trusted project.
3. Restart Codex and try the check prompt below.

codex mcp add dyscalculia --url https://mcp.dyscalculia.io/mcp

codex mcp add dyscalculia -- npx -y dyscalculia-mcp

[mcp_servers.dyscalculia]
url = "https://mcp.dyscalculia.io/mcp"

[mcp_servers.dyscalculia]
command = "npx"
args = ["-y", "dyscalculia-mcp"]

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Source: Codex: MCP

Connect Cursor

Add a URL or a command to mcp.json, for one project or for every project.

1. Create (or open) ~/.cursor/mcp.json for all projects, or .cursor/mcp.json in a project root for that project only.
2. Add one of the blocks below inside mcpServers and save.
3. In Cursor's settings, open the MCP section and check that the server is on and its tools are listed.

{
  "mcpServers": {
    "dyscalculia": {
      "url": "https://mcp.dyscalculia.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "dyscalculia": {
      "command": "npx",
      "args": ["-y", "dyscalculia-mcp"]
    }
  }
}

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Source: Cursor: MCP

Connect VS Code

The workspace file is .vscode/mcp.json. Its top-level key is servers, not mcpServers.

1. Create .vscode/mcp.json in the project root and paste one of the blocks below. The MCP: Add Server command in the Command Palette walks through the same setup.
2. Start the server with the Start link that appears above it in the file. The tools show up in Copilot Chat's Agent mode.
3. To add the local server to your user profile instead of one workspace, use the command-line form.

{
  "servers": {
    "dyscalculia": {
      "type": "http",
      "url": "https://mcp.dyscalculia.io/mcp"
    }
  }
}

{
  "servers": {
    "dyscalculia": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "dyscalculia-mcp"]
    }
  }
}

code --add-mcp "{\"name\":\"dyscalculia\",\"command\":\"npx\",\"args\":[\"-y\",\"dyscalculia-mcp\"]}"

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Source: VS Code: MCP servers

Connect Gemini CLI

Use gemini mcp add or edit settings.json. The key for a remote server is httpUrl.

1. Run the command. The default scope is project; add -s user to use the server everywhere (it is written to ~/.gemini/settings.json).
2. If you edit the file by hand, use `httpUrl`, not url, for a remote Streamable HTTP server: url is for the older SSE address.

gemini mcp add -s user --transport http dyscalculia https://mcp.dyscalculia.io/mcp

{
  "mcpServers": {
    "dyscalculia": {
      "httpUrl": "https://mcp.dyscalculia.io/mcp"
    }
  }
}

{
  "mcpServers": {
    "dyscalculia": {
      "command": "npx",
      "args": ["-y", "dyscalculia-mcp"]
    }
  }
}

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

Source: Gemini CLI: MCP servers

Connect Any other client

Any MCP client that supports Streamable HTTP works with the hosted URL. Clients that only support stdio use npx.

1. Enter the URL below in the client's remote MCP server field. There is no authentication and no header to set.
2. For a client that only supports local (stdio) servers, set the command to npx and the arguments to -y dyscalculia-mcp.
3. To check the connection without any client, the curl command below returns the tool list.

https://mcp.dyscalculia.io/mcp

curl -s https://mcp.dyscalculia.io/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Check it works. Ask: “Using Dyscalculia.io, what share of school-age children have dyscalculia, and what is the source?” The answer should be about 3 to 6 percent, with the study it comes from and its year.

The server is stateless and accepts only POST /mcp, so opening the address in a browser returns 405. That is normal. https://mcp.dyscalculia.io/health answers ok.

Source: Model Context Protocol