`fastmcp.utilities.inspect`

Utilities for inspecting FastMCP instances.

Functions

`inspect_fastmcp_v2`

inspect_fastmcp_v2(mcp: FastMCP[Any]) -> FastMCPInfo

Extract information from a FastMCP v2.x instance. Args:

mcp: The FastMCP v2.x instance to inspect

Returns:

FastMCPInfo dataclass containing the extracted information

`inspect_fastmcp_v1`

inspect_fastmcp_v1(mcp: SDKServer) -> FastMCPInfo

Extract information from a FastMCP v1.x instance using a Client. Args:

mcp: The FastMCP v1.x instance to inspect

Returns:

FastMCPInfo dataclass containing the extracted information

`inspect_fastmcp`

inspect_fastmcp(mcp: FastMCP[Any] | SDKServer) -> FastMCPInfo

Extract information from a FastMCP instance into a dataclass. This function automatically detects whether the instance is FastMCP v1.x or v2.x and uses the appropriate extraction method. Args:

mcp: The FastMCP instance to inspect (v1.x or v2.x)

Returns:

FastMCPInfo dataclass containing the extracted information

`format_fastmcp_info`

format_fastmcp_info(info: FastMCPInfo) -> bytes

Format FastMCPInfo as FastMCP-specific JSON. This includes FastMCP-specific fields like tags, enabled, annotations, etc.

`format_mcp_info`

format_mcp_info(mcp: FastMCP[Any] | SDKServer) -> bytes

Format server info as standard MCP protocol JSON. Uses Client to get the standard MCP protocol format with camelCase fields. Includes version metadata at the top level.

`format_info`

format_info(mcp: FastMCP[Any] | SDKServer, format: InspectFormat | Literal['fastmcp', 'mcp'], info: FastMCPInfo | None = None) -> bytes

Format server information according to the specified format. Args:

mcp: The FastMCP instance
format: Output format (“fastmcp” or “mcp”)
info: Pre-extracted FastMCPInfo (optional, will be extracted if not provided)

Returns:

JSON bytes in the requested format

Classes

`ToolInfo`

Information about a tool.

`PromptInfo`

Information about a prompt.

`ResourceInfo`

Information about a resource.

`TemplateInfo`

Information about a resource template.

`FastMCPInfo`

Information extracted from a FastMCP instance.

`InspectFormat`

Output format for inspect command.

fastmcp.apps

fastmcp.experimental