Anthropic SDK Python v1.3.0 repo
Anthropic's official Python SDK, version 1.3.0, released 2026-09-01. Adds organization compliance settings, user-profile order_by query support, and memory-store plus toolset schema updates to the beta API. Bug fixes include AWS base_url resolution under skip_auth, batch results exposed in GA raw/streaming response wrappers, and multipart filename derivation for file tuples passed without one.
What it does for you: The batch results fix is the most immediately impactful change: any Axion script that polls for async batch output using the GA response wrapper now reliably gets the results field, removing a silent gap that existed since the batch API hit GA. The memory-store schema updates matter for any Axion agent that stores context between sessions through the SDK memory API. Update the version pin in Axion and Hermes environments, run existing agent scripts, and confirm response shapes before treating the upgrade as done.
In practice: A tidy cleanup release that makes the beta memory and toolset APIs more reliable without introducing breaking changes to stable namespaces. The org compliance settings are enterprise-facing, but the batch and multipart fixes land for every caller.
For: Both runtimes. Core Python library for calling Claude; every Axion and Hermes script that calls the API runs through this.
Verdict: build now. Score 33. The batch results fix and memory-store schema update are immediately usable improvements that require no new code: update the pin, run tests, done. The compliance and user-profile features are beta but non-breaking for existing code, and the AWS base_url fix closes a real edge case for any Axion deployment that targets a regional Claude endpoint.
Build #1 Anthropic SDK Python v1.3.0: use the ai-implementation-build-intake skill to build this safely. Source: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v1.3.0. Save canonical skill/agent under AXION\Skills and AXION\Agents.
Source · v1.3.0 released 2026-09-01 by stainless-app on anthropics/anthropic-sdk-python; full changelog available at github.com/anthropics/anthropic-sdk-python/compare/v1.2.0...v1.3.0; commit b6d1732 fixes AWS base_url resolution; commit cbf9715 adds batch results to GA raw/streaming response wrappers; commit 74080c3 adds external_user_onboarded_at to beta user profiles and replaces relationship field with access_type; commit 429e719 adds org compliance settings and memory-store and toolset schema updates; commit a9f3fb4 fixes multipart filename derivation.