aws-serverlesslisted
Install: claude install-skill aiskillstore/marketplace
# AWS Serverless
## Patterns
### Lambda Handler Pattern
Proper Lambda function structure with error handling
**When to use**: ['Any Lambda function implementation', 'API handlers, event processors, scheduled tasks']
```python
```javascript
// Node.js Lambda Handler
// handler.js
// Initialize outside handler (reused across invocations)
const { DynamoDBClient } = require('@aws-sdk/client-dynamodb');
const { DynamoDBDocumentClient, GetCommand } = require('@aws-sdk/lib-dynamodb');
const client = new DynamoDBClient({});
const docClient = DynamoDBDocumentClient.from(client);
// Handler function
exports.handler = async (event, context) => {
// Optional: Don't wait for event loop to clear (Node.js)
context.callbackWaitsForEmptyEventLoop = false;
try {
// Parse input based on event source
const body = typeof event.body === 'string'
? JSON.parse(event.body)
: event.body;
// Business logic
const result = await processRequest(body);
// Return API Gateway compatible response
return {
statusCode: 200,
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*'
},
body: JSON.stringify(result)
};
} catch (error) {
console.error('Error:', JSON.stringify({
error: error.message,
stack: error.stack,
requestId: context.awsRequestId
}));
return {
statusCode: error.statusCode || 500,
headers: { 'Content-Type': 'application/json' },