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Developer building blocks

Strands Agents

Open-source code kits in Python and TypeScript for building and running AI agents with any model.

Widely usedNew this week

What it does

Strands Agents is a set of code libraries for building AI agents, programs where an AI model decides which steps and tools to use to finish a task.

It handles the parts developers would otherwise build themselves: limits on turns and spending, tools, MCP connectors, teams of agents, memory, streaming answers, safety guardrails, tracing and testing. It runs inside your own program, with no hosted service required.

It works with Amazon Bedrock, Anthropic, OpenAI, Gemini and many other model providers. There is also a ready-made 'harness' agent and a plugin to help coding assistants build with it.

Who it's for

Developers building AI agents into their own products.

Can I use it without coding?

Developers only. It is a programming library for Python and TypeScript. New to this? Start here.

Can I run it?

Cost
Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
Computer
An ordinary computer is fine
API key
Needed. An API key is a password-like code from an online AI service. What's that?

Try it

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • Keep your API key private. Never paste it into websites or share it, and set a spending limit with the AI service.
  • More on staying safe

Where people are talking about it