fastmcp.server.transforms.prompts_as_tools

Transform that exposes prompts as tools.

This transform generates tools for listing and getting prompts, enabling clients that only support tools to access prompt functionality.

The generated tools route through ctx.fastmcp at runtime, so all server middleware (auth, visibility, rate limiting, etc.) applies to prompt operations exactly as it would for direct prompts/get calls.

Example: ```python from fastmcp import FastMCP from fastmcp.server.transforms import PromptsAsTools

mcp = FastMCP("Server")
mcp.add_transform(PromptsAsTools(mcp))
# Now has list_prompts and get_prompt tools
```

Classes

PromptsAsTools ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/transforms/prompts_as_tools.py#L38" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

Transform that adds tools for listing and getting prompts.

Generates two tools:

• list_prompts: Lists all prompts
• get_prompt: Gets a specific prompt with optional arguments

The generated tools route through the server at runtime, so auth, middleware, and visibility apply automatically.

This transform should be applied to a FastMCP server instance, not a raw Provider, because the generated tools need the server's middleware chain for auth and visibility filtering.

Methods:

list_tools ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/transforms/prompts_as_tools.py#L75" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

list_tools(self, tools: Sequence[Tool]) -> Sequence[Tool]

Add prompt tools to the tool list.

get_tool ^{<a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/transforms/prompts_as_tools.py#L83" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a>}

get_tool(self, name: str, call_next: GetToolNext) -> Tool | None

Get a tool by name, including generated prompt tools.