fastmcp.client.transports.stdio

Classes

StdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L25" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Base transport for connecting to an MCP server via subprocess with stdio.

This is a base class that can be subclassed for specific command-based transports like Python, Node, Uvx, etc.

Methods:

connect_session ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L78" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

connect_session(self, **session_kwargs: Unpack[SessionKwargs]) -> AsyncIterator[ClientSession]

connect ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L97" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

connect(self, **session_kwargs: Unpack[SessionKwargs]) -> ClientSession | None

disconnect ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L169" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

disconnect(self)

close ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L218" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

close(self)

PythonStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L291" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running Python scripts.

FastMCPStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L344" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running FastMCP servers using the FastMCP CLI.

NodeStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L373" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running Node.js scripts.

UvStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L426" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running commands via the uv tool.

UvxStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L503" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running commands via the uvx tool.

NpxStdioTransport ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/client/transports/stdio.py#L568" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transport for running commands via the npx tool.