PRIMS – Python Runtime Interpreter MCP Server

import asyncio import json from fastmcp import Client SERVER = "http://localhost:9000/mcp" CSV_URL = "https://raw.githubusercontent.com/cs109/2014_data/master/countries.csv" async def main() -> None: async with Client(SERVER) as client: # 1. Mount the CSV once for this session mount_params = { "url": CSV_URL, "mount_path": "data/countries.csv", } mount_resp = await client.call_tool("mount_file", mount_params) print("Mount response:", mount_resp[0].text) # 2. Run code that reads the mounted CSV without passing `files` code = """ import pandas as pd import os path = 'mounts/data/countries.csv' print('File exists:', os.path.exists(path)) print('Row count:', len(pd.read_csv(path))) """ run_resp = await client.call_tool("run_code", {"code": code}) print("Run result:") print(json.dumps(json.loads(run_resp[0].text), indent=2)) if __name__ == "__main__": asyncio.run(main())