AWS Cost Analysis MCP ServerのツールをLambda関数に移植してAWS Lambda MCP Server経由で実行する

-async def get_pricing_from_web(service_code: str, ctx: Context) -> Optional[Dict]:
-    """Get pricing information from AWS pricing webpage.
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+# This file is based on code originally provided by Amazon Web Services and has been modified.

+import json
+import httpx
+from bs4 import BeautifulSoup
+
+def lambda_handler(event, context):
+    """AWS Lambda function to retrieve pricing information from AWS pricing webpage.
+    
     Args:
-        service_code: The service code (e.g., 'opensearch-service' for both OpenSearch and OpenSearch Serverless)
-        ctx: MCP context for logging and state management
+        event (dict): The Lambda event object containing the service code
+                      Expected format: {"service_code": "lambda"}
+        context (dict): AWS Lambda context object

     Returns:
-        Dict: Dictionary containing the pricing information retrieved from the AWS pricing webpage
+        dict: Pricing information if found, otherwise an error message
     """
     try:
+        # Extract service code from the event
+        service_code = event.get('service_code')
+        
+        if not service_code:
+            return {
+                'status': 'error',
+                'message': 'Missing service_code parameter'
+            }
+            
+        # サービスコードの前処理
         for prefix in ['Amazon', 'AWS']:
             if service_code.startswith(prefix):
                 service_code = service_code[len(prefix) :].lower()
         service_code = service_code.lower().strip()
+        
+        # AWSの価格ページにアクセス
         url = f'https://aws.amazon.com/{service_code}/pricing'
-        async with AsyncClient() as client:
-            response = await client.get(url, follow_redirects=True, timeout=10.0)
+        response = httpx.get(url, follow_redirects=True, timeout=10.0)
             response.raise_for_status()

+        # HTMLをパース
             soup = BeautifulSoup(response.text, 'html.parser')

-            # Remove script and style elements
+        # スクリプトとスタイル要素を削除
             for script in soup(['script', 'style']):
                 script.decompose()

-            # Extract text content
+        # テキストコンテンツを抽出
             text = soup.get_text()

-            # Break into lines and remove leading and trailing space on each
+        # 行に分割して各行の先頭と末尾の空白を削除
             lines = (line.strip() for line in text.splitlines())

-            # Break multi-headlines into a line each
+        # 複数行の見出しを1行ずつに分割
             chunks = (phrase.strip() for line in lines for phrase in line.split('  '))

-            # Drop blank lines
+        # 空行を削除
             text = '\n'.join(chunk for chunk in chunks if chunk)

-            result = {
+        # 結果を返す
+        return {
                 'status': 'success',
                 'service_name': service_code,
                 'data': text,
                 'message': f'Retrieved pricing for {service_code} from AWS Pricing url',
             }
-
-            # No need to store in context, just return the result
-
-            return result
-
     except Exception as e:
-        await ctx.error(f'Failed to get pricing from web: {e}')
-        return None
\ No newline at end of file
+        return {
+            'status': 'error',
+            'message': str(e),
+        }

{
  "mcpServers": {
    "awslabs.lambda-mcp-server": {
      "command": "uvx",
      "args": ["awslabs.lambda-mcp-server@latest"],
      "env": {
        "AWS_PROFILE": "lambda-mcp-server",
        "AWS_REGION": "ap-northeast-1",
        "FUNCTION_LIST": "get_pricing_from_web, get_pricing_from_api, generate_cost_report"
      }
    }
  }
}

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": [
                "lambda:ListFunctions",
                "lambda:ListTags"
            ],
            "Resource": "*"
        },
        {
            "Sid": "VisualEditor1",
            "Effect": "Allow",
            "Action": "lambda:InvokeFunction",
            "Resource": [
                "arn:aws:lambda:ap-northeast-1:<accountid>:function:get_pricing_from_api",
                "arn:aws:lambda:ap-northeast-1:<accountid>:function:get_pricing_from_web",
                "arn:aws:lambda:ap-northeast-1:<accountid>:function:generate_cost_report"
            ]
        }
    ]
}

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": "pricing:GetProducts",
            "Resource": "*",
            "Effect": "Allow"
        }
    ]
}