Anthropic Python SDK v1.8.0 adds claude-opus-5-5 support and MCP tool-list pinning
Anthropic released anthropic-sdk-python v1.8.0, adding API support for the claude-opus-5-5 model, inline tool definitions, and MCP tool-list pinning in beta. The release also fixes a Python 3.13 crash when a stream is left open, makes add_tools() take effect immediately, and shares one evaluated_permission enum across Managed Agents events.
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