Claude Agent SDK Python v0.1.48: Build Production Agents with Claude Code's Own Infrastructure — Subagents, Permission Modes, MCP Integration, Background Tasks

Claude API Docs·high signal

Released March 20 on PyPI, the Claude Agent SDK exposes the same primitives that power Claude Code: built-in file operations, shell commands, web search, MCP server integration, and programmatic subagent dispatch with configurable description/prompt/tools/model. Permission modes (default, acceptEdits, plan, bypassPermissions) control tool execution granularity. Background task support lets agents kick off research while working on other things. Combined with Git worktree support for independent code copies, this is the building block for custom multi-agent coding workflows.