---
id: aws-lambda-builders
version: "1.66.0"
license: Apache License 2.0
license_treatment: permissive
maintenance: active
---

# aws-lambda-builders — Python library to compile, build & package AWS Lambda functions for several runtimes & frameworks.

License: permissive · Maintenance: active · Downloads: 1.8M/mo

## What it is and what it does

aws-lambda-builders is a Python library that orchestrates the compilation and packaging of AWS Lambda functions across a wide range of runtimes and frameworks. It abstracts away the complexity of building Lambda artifacts by providing unified workflows for Java (Gradle/Maven), Python (Pip/Uv), Node.js (npm), TypeScript (esbuild), Go, Rust, Ruby, and .NET, plus a Makefile-based custom workflow system. The library powers the `sam build` command in AWS SAM CLI and can be integrated directly into Python applications or called via its JSON-RPC 2.0 interface from other languages.

Developers use it to automate Lambda build pipelines, ensure consistent artifact generation across multiple runtimes, and integrate Lambda packaging into CI/CD workflows. It handles dependency resolution, compilation, and artifact staging, reducing the manual steps required to prepare functions for deployment.

Use it for:

- Automate Lambda function builds in CI/CD pipelines for projects using multiple runtimes
- Integrate Lambda packaging into AWS SAM or custom deployment tools via the JSON-RPC interface
- Build Lambda layers and custom runtime packages with language-specific toolchain management
- Standardize artifact generation across teams working with different Lambda runtime languages
- Create custom build workflows for Lambda functions with non-standard dependencies or build steps

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Compiles, builds, and packages AWS Lambda functions across multiple runtimes and frameworks including Python, Java, Node.js, Go, Rust, Ruby, and .NET, with support for custom workflows via Makefile.

Yes. This is an actively maintained, low-friction library with permissive licensing and no known vulnerabilities. Install it if you build or deploy AWS Lambda functions programmatically, integrate with SAM CLI, or need to automate multi-runtime Lambda packaging. It is not necessary if you only deploy pre-built artifacts or use the AWS Console.

## Install

pip install aws-lambda-builders
uv add aws-lambda-builders
poetry add aws-lambda-builders

## Installing aws-lambda-builders

Before you install: Low install friction with only setuptools and wheel as runtime dependencies. Actively maintained with a recent release 16 days ago and continuous repository activity.

License in practice: Apache License 2.0 is permissive, allowing commercial use, modification, and distribution with minimal restrictions—suitable for both open-source and proprietary projects.

Quickstart:

pip install aws-lambda-builders

from aws_lambda_builders.builders.python_pip_builder import PythonPipBuilder

builder = PythonPipBuilder(source_dir='src', artifacts_dir='build', scratch_dir='temp')
builder.build()

Requires Python 3.10 or later; actual build workflows depend on the target runtime's toolchain being available on the system (e.g., Maven for Java, npm for Node.js).

Verify before relying:

- Whether the JSON-RPC 2.0 interface is production-ready or still experimental
- Performance characteristics when building large Lambda functions or monorepos
- Compatibility matrix details for specific versions of each supported runtime toolchain

## Package facts

- License: Apache License 2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 1.8M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

AWS Lambda build tool, lambda function packaging, multi-runtime lambda builder, AWS SAM build backend, lambda deployment compiler, serverless function build, lambda artifact creation, aws-lambda, build-automation, serverless

[View on SkillFed](https://skillfed.io/packages/aws-lambda-builders) · [View on PyPI](https://pypi.org/project/aws-lambda-builders/)