length_measurement

# Length & Dimension Measurement

**Discipline**: Metrology | **Tools Used**: 4 | **Servers**: 3

## Description

Precision length measurement: convert mm to m, calculate length plus width, area, and error.

## Tools Used

- **`convert_length_mm_to_m`** from `server-27` (streamable-http) - `https://scp.intern-ai.org.cn/api/v1/mcp/27/Physical_Quantities_Conversion`
- **`calculate_length_plus_width`** from `server-25` (streamable-http) - `https://scp.intern-ai.org.cn/api/v1/mcp/25/Geometry_and_mathematical_calculations`
- **`calculate_area`** from `server-25` (streamable-http) - `https://scp.intern-ai.org.cn/api/v1/mcp/25/Geometry_and_mathematical_calculations`
- **`calculate_absolute_error`** from `server-26` (streamable-http) - `https://scp.intern-ai.org.cn/api/v1/mcp/26/Data_processing_and_statistical_analysis`

## Workflow

1. Convert length mm to m
2. Calculate length plus width
3. Calculate area
4. Compute measurement error

## Test Case

### Input
```json
{
    "length_mm": 150,
    "width_mm": 80
}
```

### Expected Steps
1. Convert length mm to m
2. Calculate length plus width
3. Calculate area
4. Compute measurement error

## Usage Example

> **Note:** Replace `<YOUR_SCP_HUB_API_KEY>` with your own SCP Hub API Key. You can obtain one from the [SCP Platform](https://scphub.intern-ai.org.cn).

```python
import asyncio
import json
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
from mcp.client.sse import sse_client

SERVERS = {
    "server-27": "https://scp.intern-ai.org.cn/api/v1/mcp/27/Physical_Quantities_Conversion",
    "server-25": "https://scp.intern-ai.org.cn/api/v1/mcp/25/Geometry_and_mathematical_calculations",
    "server-26": "https://scp.intern-ai.org.cn/api/v1/mcp/26/Data_processing_and_statistical_analysis"
}

async def connect(url, transport_type):
    transport = streamablehttp_client(url=url, headers={"SCP-HUB-API-KEY": "<YOUR_SCP_HUB_API_KEY>"})
    read, write, _ = await transport.__aenter__()
    ctx = ClientSession(read, write)
    session = await ctx.__aenter__()
    await session.initialize()
    return session, ctx, transport

def parse(result):
    try:
        if hasattr(result, 'content') and result.content:
            c = result.content[0]
            if hasattr(c, 'text'):
                try: return json.loads(c.text)
                except: return c.text
        return str(result)
    except: return str(result)

async def main():
    # Connect to required servers
    sessions = {}
    sessions["server-27"], _, _ = await connect("https://scp.intern-ai.org.cn/api/v1/mcp/27/Physical_Quantities_Conversion", "streamable-http")
    sessions["server-25"], _, _ = await connect("https://scp.intern-ai.org.cn/api/v1/mcp/25/Geometry_and_mathematical_calculations", "streamable-http")
    sessions["server-26"], _, _ = await connect("https://scp.intern-ai.org.cn/api/v1/mcp/26/Data_processing_and_statistical_analysis", "streamable-http")

    # Execute workflow steps
    # Step 1: Convert length mm to m
    result_1 = await sessions["server-27"].call_tool("convert_length_mm_to_m", arguments={})
    data_1 = parse(result_1)
    print(f"Step 1 result: {json.dumps(data_1, indent=2, ensure_ascii=False)[:500]}")

    # Step 2: Calculate length plus width
    result_2 = await sessions["server-25"].call_tool("calculate_length_plus_width", arguments={})
    data_2 = parse(result_2)
    print(f"Step 2 result: {json.dumps(data_2, indent=2, ensure_ascii=False)[:500]}")

    # Step 3: Calculate area
    result_3 = await sessions["server-25"].call_tool("calculate_area", arguments={})
    data_3 = parse(result_3)
    print(f"Step 3 result: {json.dumps(data_3, indent=2, ensure_ascii=False)[:500]}")

    # Step 4: Compute measurement error
    result_4 = await sessions["server-26"].call_tool("calculate_absolute_error", arguments={})
    data_4 = parse(result_4)
    print(f"Step 4 result: {json.dumps(data_4, indent=2, ensure_ascii=False)[:500]}")

    # Cleanup
    print("Workflow complete!")

if __name__ == "__main__":
    asyncio.run(main())
```