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fastmcp.server.middleware.tool_injection

A middleware for injecting tools into the MCP server context.

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Functions

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list_prompts 

list_prompts(context: Context) -> list[Prompt]
List prompts available on the server.

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get_prompt 

get_prompt(context: Context, name: Annotated[str, 'The name of the prompt to render.'], arguments: Annotated[dict[str, Any] | None, 'The arguments to pass to the prompt.'] = None) -> mcp.types.GetPromptResult
Render a prompt available on the server.

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list_resources 

list_resources(context: Context) -> list[mcp.types.Resource]
List resources available on the server.

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read_resource 

read_resource(context: Context, uri: Annotated[AnyUrl | str, 'The URI of the resource to read.']) -> list[ReadResourceContents]
Read a resource available on the server.

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Classes

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ToolInjectionMiddleware

A middleware for injecting tools into the context. Methods:

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on_list_tools 

on_list_tools(self, context: MiddlewareContext[mcp.types.ListToolsRequest], call_next: CallNext[mcp.types.ListToolsRequest, Sequence[Tool]]) -> Sequence[Tool]
Inject tools into the response.

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on_call_tool 

on_call_tool(self, context: MiddlewareContext[mcp.types.CallToolRequestParams], call_next: CallNext[mcp.types.CallToolRequestParams, ToolResult]) -> ToolResult
Intercept tool calls to injected tools.

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PromptToolMiddleware

A middleware for injecting prompts as tools into the context.

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ResourceToolMiddleware

A middleware for injecting resources as tools into the context.