Convert physical quantities and units at nanoscale for materials science and nanotechnology applications.
import asyncio
import json
from mcp.client.streamable_http import streamablehttp_client
from mcp import ClientSession
class UnitClient:
def __init__(self, server_url: str, api_key: str):
self.server_url = server_url
self.api_key = api_key
self.session = None
async def connect(self):
try:
self.transport = streamablehttp_client(url=self.server_url, headers={"SCP-HUB-API-KEY": self.api_key})
self.read, self.write, self.get_session_id = await self.transport.__aenter__()
self.session_ctx = ClientSession(self.read, self.write)
self.session = await self.session_ctx.__aenter__()
await self.session.initialize()
return True
except:
return False
async def disconnect(self):
if self.session:
await self.session_ctx.__aexit__(None, None, None)
if hasattr(self, 'transport'):
await self.transport.__aexit__(None, None, None)
def parse_result(self, result):
try:
if hasattr(result, 'content') and result.content:
return json.loads(result.content[0].text)
return str(result)
except:
return {"error": "parse error"}
## Initialize and use
client = UnitClient("https://scp.intern-ai.org.cn/api/v1/mcp/27/Physical_Quantities_Conversion", "<your-api-key>")
await client.connect()
# Nanoscale unit conversions
nm_to_m = 1e-9
angstrom_to_m = 1e-10
length_nm = 50 # nanometers
length_m = length_nm * nm_to_m
length_angstrom = length_m / angstrom_to_m
print(f"{length_nm} nm = {length_m:.2e} m = {length_angstrom:.1f} Å")
# Energy conversion (eV to Joules)
eV_to_J = 1.602e-19
energy_eV = 2.5
energy_J = energy_eV * eV_to_J
print(f"{energy_eV} eV = {energy_J:.2e} J")
await client.disconnect()