Download
Chalice is a Python microframework for writing and deploying serverless applications on AWS with minimal ceremony. You define routes, event handlers, and background tasks in plain Python, and Chalice turns them into AWS Lambda functions wired to API Gateway, Amazon EventBridge schedulers, S3/SNS/SQS triggers, and more. A single command builds your app, bundles dependencies, generates infrastructure templates, and deploys to your account with sensible defaults. The framework includes local development tools so you can iterate on HTTP routes and inspect logs before shipping to the cloud. It also manages per-stage configuration, environment variables, IAM permissions scaffolding, and packaging optimizations to keep cold starts small. While it’s intentionally lightweight, it supports common production needs like CORS, custom authorizers, binary responses, and fine-grained IAM so you can grow from prototype to production without rewriting your stack.
Features
- Python decorators for HTTP routes, Lambda functions, and event sources
- One-command build and deploy workflow with stage management
- Automatic IAM policy generation scoped to your handlers
- Local server for rapid testing of API routes and payloads
- Built-in support for S3, SNS, SQS, EventBridge, and scheduled jobs
- Configuration files for environment variables, parameters, and per-stage overrides
Project Samples
