Claude Agent SDK
Claude Agent SDK is Anthropic's SDK (Python and TypeScript) for building agents on top of Claude Code programmatically, with support for custom tools and hooks.
Free tierOpen sourceVerified
Our verdict
Build agents on top of the same harness that powers Claude Code, with custom tools and hooks. Strong for coding and file-heavy agents; tied to Claude models.
Best for
- ✓ Coding and file-manipulating agents
- ✓ Reusing Claude Code's tool loop
- ✓ Python and TypeScript
Watch out for
- ! Tied to Claude models
- ! Use is also governed by Anthropic's commercial terms
Pricing
Read from the official pricing page. Prices in USD; always confirm on the vendor's site.
| Plan | Price | Details |
|---|---|---|
| SDK | Free | MIT-licensed repo; use also governed by Anthropic Commercial Terms. Claude model usage billed separately - check site. |
Note: License verified on official GitHub repo (Python SDK). Claude API model pricing was not read and is not recorded. The 'openSource' flag reflects the MIT repo license, but use is additionally subject to Anthropic's Commercial Terms.
Open source (MIT (repo); use governed by Anthropic Commercial Terms of Service).