fast-llms-txt 0.1.0

Generate llms.txt markdown from FastAPI OpenAPI schema for AI agents

fast-llms-txt

Generate an llms.txt markdown manifest from your FastAPI OpenAPI schema for AI agents.

Inspired by the llms.txt specification for LLM-friendly documentation.

Installation

uv add fast-llms-txt

Usage

from fastapi import FastAPI
from fast_llms_txt import create_llms_txt_router

app = FastAPI(title="My API", description="A sample API")

@app.get("/users")
def list_users(limit: int = 10):
    """List all users."""
    return []

# Mount the llms.txt endpoint
app.include_router(create_llms_txt_router(app), prefix="/docs")

Now GET /docs/llms.txt returns:

# My API

> A sample API

## Endpoints

- **GET /users** - List all users.
  - `limit` (integer, optional):
  - **Response** (200): Successful Response

API

create_llms_txt_router(app, path="/llms.txt")

Creates a FastAPI router that serves the llms.txt endpoint.

• app: Your FastAPI application instance
• path: The endpoint path (default: /llms.txt)

generate_llms_txt(openapi_schema)

Directly convert an OpenAPI schema dict to llms.txt markdown string.