{"generatedAt":"2026-10-24T12:11:27.697Z","canonicalUrl":"https://agentbreakwatch.vercel.app/p/anthropic-python","llmsTxtUrl":"https://agentbreakwatch.vercel.app/p/anthropic-python/llms.txt","categoryHub":{"slug":"agent-sdks","title":"AI Agent SDKs & Frameworks Breaking-Change Index","url":"https://agentbreakwatch.vercel.app/c/agent-sdks"},"tldrVerdict":"Anthropic Python SDK (anthropic) is currently at v2.3.0 on PYPI (published 2026-10-23), with a 90-day Stability Score of 78/100 (B) and MEDIUM schema drift risk. v2.x drops Python 3.9 support, requires typed thinking blocks on multi-turn tool loops, and updates streaming citation events.","package":{"slug":"anthropic-python","packageName":"anthropic","registry":"pypi","kind":"sdk","subcategory":"Model Provider SDK","displayName":"Anthropic Python SDK","vendor":"Anthropic","githubRepo":"anthropics/anthropic-sdk-python","breakingSummary":"v2.x drops Python 3.9 support, requires typed thinking blocks on multi-turn tool loops, and updates streaming citation events.","schemaDriftRisk":"medium","affectedSymbols":["Anthropic","AsyncAnthropic","messages.stream"],"migrationBefore":"client.beta.prompt_caching.messages.create(model=\"claude-3-5-sonnet-20241022\", messages=msgs)","migrationAfter":"client.messages.create(model=\"claude-sonnet-4-5\", max_tokens=4096, messages=msgs)","description":"The official Python library for the anthropic API","latestVersion":"2.3.0","latestPublishedAt":"2026-10-23T23:18:45.779480Z","recentVersions":[{"version":"2.3.0","publishedAt":"2026-10-23T23:18:45.779480Z"},{"version":"2.2.0","publishedAt":"2026-10-23T13:10:31.356744Z"},{"version":"2.1.0","publishedAt":"2026-10-21T22:00:54.480521Z"},{"version":"2.0.0","publishedAt":"2026-10-21T15:51:54.549615Z"},{"version":"1.17.0","publishedAt":"2026-10-20T22:13:32.585203Z"},{"version":"1.16.0","publishedAt":"2026-10-20T17:50:14.680219Z"}],"releasesLast90d":30,"dependenciesCount":17,"license":"Apache-2.0","registryUrl":"https://pypi.org/project/anthropic/","githubUrl":"https://github.com/anthropics/anthropic-sdk-python","installCommand":"pip install \"anthropic==2.3.0\"","stabilityScore":78,"stabilityGrade":"B"}}