AWS releases local service emulator written by coding agents
What happened
AWS released a local API emulator, AWS Emulator, for development and testing without an AWS account, sending requests to the emulator instead of AWS. It supports a server mode and an embedded mode inside Rust tests, and a skill lets coding agents help configure it, requiring AWS CLI 2.35.0 or later. Later reports said the tool runs offline for free, with all code written and tested by agents, built on more than 400 API models covering over 200 services and checked against real AWS behavior. Engineers own the specs, tests and a merge gate that includes security review. The code is released under CC0, and the public commit history is published alongside behavior mismatches. The tool is not for production workloads or security testing, and default telemetry can be turned off. Simon Willison later reported the project is written in Rust, produced 29,684 commits in its first three weeks, and currently needs Docker to run on macOS or Windows; he wants a single binary in the future.
Written by AI from the coverage · updated 4 hours ago
Coverage
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- Simon Willisonaws-emulator
AWS 推出官方模拟器 aws-emulator，可针对多种 AWS 服务的本地副本运行测试，无需为此配置付费 API 密钥。项目由大量 AI 智能体使用 Rust 编写，前三周产生了 29,684 次提交，目前在 macOS 或 Windows 上运行需要 Docker。Simon Willison 希望未来能直接下载单个二进制文件，用于其他语言和平台的标准测试套件。
- Hacker News front pagePickAWS Emulator lets coding agents test offline, with engineers owning the merge gate
AWS released AWS Emulator, a free, offline AWS test environment that runs on a local machine for coding agents. Its code was written and tested entirely by agents, built on more than 400 API models covering over 200 AWS services, and checked against real AWS for behavioral consistency. The code is published under CC0, and the GitHub repo shows the full commit history plus the known gaps where behavior still differs from real AWS. Engineers design the specs, tests and the merge gate, including security review.
- Hacker News front pageAWS emulator
AWS Emulator 是用于开发和测试的本地 AWS API 模拟器，无需 AWS 账号，请求发送至模拟器而非 AWS。它支持服务端模式和 Rust 测试内嵌模式，也可通过 aws-emulator 技能让 AI 编码智能体协助配置，后者要求 AWS CLI 2.35.0 或更高版本。该工具不适用于生产负载或安全测试，默认开启使用遥测，可通过命令行、环境变量或配置关闭。
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