Hyperspell

A spellchecker and grammar checker for developers, requiring a Hyperspell token for authentication.

GitHub

Configuration

  • HYPERSPELL_TOKEN should be a valid user or app token (refer to the Hyperspell docs for how to obtain a user token).
  • Some MCP clients don't support resources well (looking at you, Claude Desktop), so we can expose them as tools instead. Set HYPERSPELL_USE_RESOURCES to false (default) to expose everything as tools, true to expose retrieveing single documents or listing collections as resources instead, or both if you want it all.
  • Optionally, set HYPERSPELL_COLLECTION to the name of the collection you want to query and add data to. If not set, it will use the user's default collection instead.

Claude Desktop

Note that Claude needs the absolute path to uv, which can be found with which uv (it's usually ~/.local/bin/uv).

{
  "mcpServers": {
    "Hyperspell": {
      "command": "/path/to/uv",
      "args": [
        "run",
        "--with",
        "hyperspell",
        "--with",
        "mcp[cli]",
        "mcp",
        "run",
        "/path/to/hyperspell_mcp/server.py"
      ],
      "env": {
        "HYPERSPELL_TOKEN": "<app or user token>",
        "USE_RESOURCES": "false"
      }
    }
  }
}

Using the inspector

Create a .env file with the following contents:

HYPERSPELL_TOKEN=...
HYPERSPELL_USE_RESOURCES=true

Then run this to start the inspector:

uv run mcp dev src/hyperspell_mcp/server.py

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