# Anthropic Python SDK v1.3.0

Category: model-behavior
Published: 2026-09-01T17:36:55Z
Source: [Anthropic Python SDK releases](https://github.com/anthropics/anthropic-sdk-python/releases/tag/v1.3.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-19T00:17:26.715Z
Tags: anthropic, sdk, python

## Human Summary
Anthropic Python SDK releases published Anthropic Python SDK v1.3.0. 1.3.0 (2026-09-01) Full Changelog: v1.2.0...v1.3.0 (https://github.com/anthropics/anthropic-sdk-python/compare/v1.2.0...v1.3.0) Features api: beta user profiles: add external user onboarded at, remove relationship in favor of access type ( 74080c3…

## Agent Summary
Treat Anthropic Python SDK v1.3.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Anthropic Python SDK releases published Anthropic Python SDK v1.3.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: 1.3.0 (2026-09-01) Full Changelog: v1.2.0...v1.3.0 (https://github.com/anthropics/anthropic-sdk-python/compare/v1.2.0...v1.3.0) Features api: beta user profiles: add external user onboarded at, remove relationship in favor of access type ( 74080c3 (https://github.com/anthropics/anthropic-sdk-python/commit/74080c35d6e4f3e5e7fd47454ecce2350cbfdd2b)) api: manual updates ( 1dc3ce0 (https://github.com/anthropics/anthropic-sdk-python/commit/1dc3ce0709a9bca146b045dfb0787971e747b1f5)) api: organization compliance settings, user-profile order by, memory-store and toolset schema updates ( 429e719 (https://github.com/anthropics/anthropic-sdk-python/commit/429e719f84bd78db51c9fd0442ccb0ca63e614ba)) Bug Fixes aws: resolve base url from aws region under skip auth and with options ( 564 (https://github.com/anthropics/anthropic-sdk-python/issues/564)) ( b6d1732…

## Recommended actions
- Review the official Anthropic Python SDK releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.