Strands 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 licence and credit line.

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Install

pip install "strands-agents[anthropic]"
export PEXAFY_API_KEY="pexafy_..."      # free key: pexafy.com/dashboard/api-keys/create
export ANTHROPIC_API_KEY="sk-ant-..."   # for this example; any Strands model provider works

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Use

import os

from strands import Agent
from strands.models.anthropic import AnthropicModel
from strands.tools.mcp import MCPClient

pexafy = MCPClient(
    url="https://mcp.pexafy.com/mcp",
    headers={"Authorization": f"Bearer {os.environ['PEXAFY_API_KEY']}"},
    tool_filters={"allowed": ["search_photos", "search_photos_by_image"]},
)

agent = Agent(
    model=AnthropicModel(model_id="claude-haiku-4-5", max_tokens=2000),
    system_prompt="Find free stock photos and give each photo's credit line.",
    tools=[pexafy],
)

agent("Find a header photo for a post about remote work.")
tool_filters 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.