# Claude Agent SDK

MIT-licensed Python and TypeScript SDKs exposing the agent loop that powers Claude Code. Claude Agent SDK is free, with no paid plan attached, at github.com.

## Facts

- **Pricing tier:** Free
- **Works on:** API, Self-hosted
- **Works in browser:** No

## Capabilities

- MIT-licensed Python and TypeScript SDKs exposing the agent loop that powers Claude Code
- Built-in tools for files, shell and MCP with custom tool support
- Bring an Anthropic API key; the SDK itself costs nothing

## FAQ

### What is Claude Agent SDK?

Claude Agent SDK is listed under Agent Frameworks (Developers), in the AI Agents & Automation category on Flocci AI Tools. MIT-licensed Python and TypeScript SDKs exposing the agent loop that powers Claude Code. It is free, with no paid plan attached, and it lives at github.com.

### Is Claude Agent SDK free?

Claude Agent SDK is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.

### Can I use Claude Agent SDK in a browser, or is there an app?

Claude Agent SDK needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on an API and self-hosting.

### What can Claude Agent SDK do?

Claude Agent SDK does 3 things the catalog singles out: Mit-licensed python and typescript sdks exposing the agent loop that powers claude code; built-in tools for files, shell and mcp with custom tool support; bring an anthropic api key; the sdk itself costs nothing.

### What is the best free alternative to Claude Agent SDK?

Agno is the closest free alternative: it sits in the same Agent Frameworks (Developers) sub-category and is free. AWS Strands Agents, CAMEL and Cloudflare Agents SDK also start free. The full list is on the alternatives page.

## Related

- [Claude Agent SDK alternatives](https://aitools.flocci.in/alternatives/claude-agent-sdk)
- [Agent Frameworks (Developers)](https://aitools.flocci.in/category/ai-agents-automation/agent-frameworks-developers)
- [Best free AI agent frameworks for developers](https://aitools.flocci.in/best/best-agent-frameworks-developers)
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Source: Flocci AI Tools — https://aitools.flocci.in/tool/claude-agent-sdk

Facts last verified: October 2026