Microsoft Agent Framework agents use Pexafy through its MCP server, https://mcp.pexafy.com/mcp, with your API key in the Authorization header. The agent searches free-to-use photos (Unsplash, Pexels, Pixabay and more) and gets each one back with its URL, licence and credit line.

​
Install

pip install agent-framework
export PEXAFY_API_KEY="pexafy_..."   # free key: pexafy.com/dashboard/api-keys/create
export OPENAI_API_KEY="sk-..."       # for this example; Azure OpenAI and other providers work too

​
Use

import asyncio
import os

from agent_framework import Agent, MCPStreamableHTTPTool
from agent_framework.openai import OpenAIChatClient


async def main():
    async with MCPStreamableHTTPTool(
        name="pexafy",
        url="https://mcp.pexafy.com/mcp",
        static_headers={"Authorization": f"Bearer {os.environ['PEXAFY_API_KEY']}"},
        allowed_tools=["search_photos", "search_photos_by_image"],
    ) as pexafy:
        agent = Agent(
            client=OpenAIChatClient(model="gpt-5.4-mini"),
            instructions="Find free stock photos and give each photo's URL and credit line.",
            tools=pexafy,
        )
        result = await agent.run("Find a header photo for a post about remote work.")
        print(result.text)


asyncio.run(main())
allowed_tools keeps the two search tools. The other tools are for chat clients, where a person views a photo grid or links an account. On the free plan, show the credit line next to each photo you publish. See MCP server for the full tool list.