#!/usr/bin/env python3
"""
Test MCP server without an LLM: spawns server via stdio and calls tools.
Run from project root: uv run python scripts/test_mcp.py
"""
import sys
from pathlib import Path
import anyio
# Project root
ROOT = Path(__file__).resolve().parent.parent
if str(ROOT) not in sys.path:
sys.path.insert(0, str(ROOT))
async def main() -> None:
"""Spawn server, list tools, call tool, print result."""
from mcp.client.session import ClientSession
from mcp.client.stdio import StdioServerParameters, stdio_client
# search_cars make model price_min price_max | get_car_details <url_or_id>
args = sys.argv[1:]
if len(args) >= 5 and args[0] == "search_cars":
tool_name = "search_cars"
tool_args = {
"make": args[1],
"model": args[2],
"price_min": int(args[3]),
"price_max": int(args[4]),
"limit": 10,
}
elif len(args) >= 2 and args[0] == "get_car_details":
tool_name = "get_car_details"
tool_args = {"listing_id": args[1]}
else:
tool_name = "get_trending"
tool_args = {"category": "new", "limit": 2}
params = StdioServerParameters(
command=sys.executable,
args=["-m", "src.server"],
cwd=ROOT,
)
async with stdio_client(params) as (read_stream, write_stream):
async with ClientSession(read_stream, write_stream) as session:
await session.initialize()
result = await session.call_tool(tool_name, tool_args)
if result.isError:
print("Tool error")
for block in result.content:
if getattr(block, "type", None) == "text":
print(block.text)
if __name__ == "__main__":
anyio.run(main, backend="trio")
