# Anthropic Python SDK v2.0.0

Category: model-behavior
Published: 2026-10-21T15:51:32Z
Source: [Anthropic Python SDK releases](https://github.com/anthropics/anthropic-sdk-python/releases/tag/v2.0.0)
Agent usefulness: 96/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-21T18:17:50.586Z
Tags: anthropic, sdk, python

## Human Summary
Anthropic Python SDK v2.0.0 is released, introducing breaking changes to support API version 2026-10-21 and adding new spend limit filters.

## Agent Summary
Anthropic Python SDK v2.0.0 introduces breaking changes to add support for API version 2026-10-21. It also adds a workspace ID filter and a usage tier scope type for listing spend limits, and updates the messages description documentation.

## Body
Anthropic has released v2.0.0 of its Python SDK, marking a major release with breaking changes. The update adds support for API version 2026-10-21. In addition, it brings new features for managing spend limits, including a workspace id filter and a usage tier scope type. Documentation updates also remove an outdated system role note from the messages description.

## Recommended actions
- Review breaking changes related to API version 2026-10-21 before upgrading to SDK v2.0.0.
- Update integrations that list spend limits if workspace id filtering or the usage tier scope type is required.

## 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.