Claude Agent SDK
Overview
The foundational infrastructure that powers Claude Code, now available as a multi-modal agent framework. It enables agents to read/edit files, run terminal commands, and use tools via MCP servers in a secure sandbox.
The Claude Agent SDK packages the infrastructure behind Claude Code into a framework for building autonomous, multimodal agents that can read and edit files, run commands, and use tools through MCP servers. It gives developers Anthropic's battle-tested agent loop and tool-use foundation. It targets teams building reliable agentic coworkers on Claude.
Key Features
- Powers and generalizes Claude Code
- File editing and terminal command execution
- Tool use via MCP servers
- Secure, sandboxed operation
- Robust agent loop from Anthropic
Best For
Developers building reliable, multimodal autonomous agents on top of Claude.
Pros & Cons
Pros
- Battle-tested agent infrastructure
- Strong tool-use and MCP support
- Backed by Anthropic
Cons
- Centered on the Claude ecosystem
- API usage costs for heavy workloads
Pulse Verdict
“The gold standard for reliable agentic actions. By packaging the core of Claude Code, Anthropic has provided the most robust toolkit for building autonomous, multi-modal coworkers.”
Pricing
Usage-based via the Anthropic API; SDK itself is free.
Pricing changes often — confirm current plans on the official site.