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io.github.daedalus/mcp-pyright

MCP server that exposes Pyright language server functionality

Developer ToolsPythonv0.1.0

mcp-pyright

MCP server that exposes Pyright language server functionality

PyPI Python Ruff

mcp-name: io.github.daedalus/mcp-pyright

Install

pip install mcp-pyright

Usage

The MCP server can be used with any MCP-compatible client. It exposes the following tools:

Type Checking

from mcp_pyright import mcp

# Run type checking
result = check_types(code="x: int = 'hello'")

Get Hover Information

# Get type information at position
result = get_hover(code="x: int = 1", position=0)

Get Completions

# Get code completions
result = get_completions(code="prin", position=4)

Get Definition

# Find definition location
result = get_definition(code="def foo(): pass\nfoo()", position=15)

Find References

# Find all references
result = find_references(code="x = 1\nx", position=5)

Get Document Symbols

# Get all symbols in document
result = get_document_symbols(code="class Foo: pass\ndef bar(): pass")

Format Code

# Format Python code
result = format_code(code="x=1\ny=2")

Development

git clone https://github.com/daedalus/mcp-pyright.git
cd mcp-pyright
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mypy src/

License

MIT

Installation

Source-derived launch command. Check the maintainer’s required arguments and credentials before running:

bash
uvx mcp-pyright

Set up in your AI client

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json
{
  "mcpServers": {
    "io-github-daedalus-mcp-pyright": {
      "command": "uvx",
      "args": [
        "mcp-pyright"
      ]
    }
  }
}

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Package

mcp-pyrightpypi

Compatible MCP Clients

io.github.daedalus/mcp-pyright works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

  • Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.
  • Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.
  • VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.
  • Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.
  • Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

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