# Anthropic Python SDK changelog > The official Python library for the Anthropic API. - Vendor: Anthropic - Category: AI - Official site: https://github.com/anthropics/anthropic-sdk-python - Tracked by: What's New (https://whatsnew.fyi/product/anthropic-sdk-python) - Harvested from: GitHub (anthropics/anthropic-sdk-python) - Entries below: 10 (newest first) What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. ## Releases ### v0.120.2 - Date: 2026-07-28 - Version: v0.120.2 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.120.2 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.120.2 - **fixed** — support mcp sdk v2 alongside v1 ##### 0.120.2 (2026-07-28) Full Changelog: [v0.120.1...v0.120.2](https://github.com/anthropics/anthropic-sdk-python/compare/v0.120.1...v0.120.2) ###### Bug Fixes * **mcp:** support mcp sdk v2 alongside v1 ([#300](https://github.com/anthropics/anthropic-sdk-python/issues/300)) ([177f88c](https://github.com/anthropics/anthropic-sdk-python/commit/177f88ccd7f966e47b654cb19ad0e9cfa4c58ac2)) ### v0.120.1 - Date: 2026-07-28 - Version: v0.120.1 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.120.1 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.120.1 - **fixed** — Pin mcp extra to version less than 2 ##### 0.120.1 (2026-07-28) Full Changelog: [v0.120.0...v0.120.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.120.0...v0.120.1) ###### Bug Fixes * **mcp:** pin mcp extra to <2 ([#1783](https://github.com/anthropics/anthropic-sdk-python/issues/1783)) ([fb66371](https://github.com/anthropics/anthropic-sdk-python/commit/fb66371322621be23a0956f1998da39c4686f4cb)) ### v0.120.0 - Date: 2026-07-24 - Version: v0.120.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.120.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.120.0 - **added** — Add claude-opus-5 model - **added** — Add tool addition/removal blocks and tool_change events - **added** — Expand client-side fallback credit token types and add server-side fallbacks default option ##### 0.120.0 (2026-07-24) Full Changelog: [v0.119.0...v0.120.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.119.0...v0.120.0) ###### Features * **api:** add claude-opus-5 model ([bf4e31c](https://github.com/anthropics/anthropic-sdk-python/commit/bf4e31c17c43ba2b409bec57e1856b025d159f1a)) * **api:** add tool addition/removal blocks and tool_change events ([bf4e31c](https://github.com/anthropics/anthropic-sdk-python/commit/bf4e31c17c43ba2b409bec57e1856b025d159f1a)) * **api:** expand client-side fallback credit token types and add server-side fallbacks default option ([bf4e31c](https://github.com/anthropics/anthropic-sdk-python/commit/bf4e31c17c43ba2b409bec57e1856b025d159f1a)) ### v0.119.0 - Date: 2026-07-23 - Version: v0.119.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.119.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.119.0 - **added** — Add new stop reason 'model_context_window_exceeded' - **fixed** — Handle binary files in agent toolset read/edit ##### 0.119.0 (2026-07-23) Full Changelog: [v0.118.0...v0.119.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.118.0...v0.119.0) ###### Features * **api:** add new stop reason 'model_context_window_exceeded' ([d983cde](https://github.com/anthropics/anthropic-sdk-python/commit/d983cdecdea27fb8ae36fd293930b978c9bebf4f)) ###### Bug Fixes * **tools:** handle binary files in agent toolset read/edit ([#283](https://github.com/anthropics/anthropic-sdk-python/issues/283)) ([417b76b](https://github.com/anthropics/anthropic-sdk-python/commit/417b76b9adcb69ee9effa2e9af1536dd08e6764e)) ### v0.118.0 - Date: 2026-07-22 - Version: v0.118.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.118.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.118.0 - **added** — Add support for Managed Agents model effort, initial session events, and threads delta streaming ##### 0.118.0 (2026-07-22) Full Changelog: [v0.117.1...v0.118.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.117.1...v0.118.0) ###### Features * **api:** add support for Managed Agents model effort, initial session events, and threads delta streaming ([712bc6f](https://github.com/anthropics/anthropic-sdk-python/commit/712bc6f5e07ca7607e13f24fba4eea57c2e73478)) ### v0.117.1 - Date: 2026-07-21 - Version: v0.117.1 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.117.1 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.117.1 - **fixed** — Handle credentials correctly when using AnthropicAWS.copy() - **added** — Add support for new refusal category ##### 0.117.1 (2026-07-21) Full Changelog: [v0.117.0...v0.117.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.117.0...v0.117.1) ###### Bug Fixes * **aws:** handle credentials correctly when using AnthropicAWS.copy() ([85d3881](https://github.com/anthropics/anthropic-sdk-python/commit/85d3881b2e178dd30b30f9ac4c462f20ea88693d)) ###### Chores * **api:** add support for new refusal category ([d1dea0b](https://github.com/anthropics/anthropic-sdk-python/commit/d1dea0b51164c859de1e05a78468f5be2b6a67de)) * **client:** docs updates ([b14f94c](https://github.com/anthropics/anthropic-sdk-python/commit/b14f94c231f9adc6bb2ad96eddfc27cc1a4cfea7)) * **deps:** bump http-snapshot to 0.1.9 ([#275](https://github.com/anthropics/anthropic-sdk-python/issues/275)) ([434b657](https://github.com/anthropics/anthropic-sdk-python/commit/434b65772633f1c0d1899de64d40a67b7cb943fe)) * **deps:** pin httpx_aiohttp major version ([#271](https://github.com/anthropics/anthropic-sdk-python/issues/271)) ([924487f](https://github.com/anthropics/anthropic-sdk-python/commit/924487f7c8b3afd69ec382af78326ba224779141)) * **docs:** small updates ([c48db8b](https://github.com/anthropics/anthropic-sdk-python/commit/c48db8b6cdd800a98bf57088f530de8fe4dc82e8)) * **docs:** small updates ([755c06c](https://github.com/anthropics/anthropic-sdk-python/commit/755c06cc06161ccdf9b28b77d5e6de58adb462ce)) * **internal:** codegen related update ([a4fbecf](https://github.com/anthropics/anthropic-sdk-python/commit/a4fbecf6a2b002c8807da2336a75ddef7864f47c)) ### v0.117.0 - Date: 2026-07-16 - Version: v0.117.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.117.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.117.0 - **added** — Add support for dreaming - **added** — Add support for MCP Tunnels - **fixed** — Keep credential material out of traceback frame locals via SecretStr ##### 0.117.0 (2026-07-16) Full Changelog: [v0.116.0...v0.117.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.116.0...v0.117.0) ###### Features * **api:** add support for dreaming ([642eee7](https://github.com/anthropics/anthropic-sdk-python/commit/642eee707b0fe3c35c21917f60b06846b2a3b291)) * **api:** add support for MCP Tunnels ([d716df6](https://github.com/anthropics/anthropic-sdk-python/commit/d716df6edb1df7de25f1b5e14dcab33b9aafc2ff)) ###### Bug Fixes * **credentials:** keep credential material out of traceback frame locals via SecretStr ([aa93a4d](https://github.com/anthropics/anthropic-sdk-python/commit/aa93a4dbf383f7fdab1404c136e86d4679d644c1)) ###### Chores * **docs:** small updates to field descriptions ([75d8dcc](https://github.com/anthropics/anthropic-sdk-python/commit/75d8dcc0ac8cb381fa327a61a9ac84022b3a1677)) * **docs:** update model example ([a57e30a](https://github.com/anthropics/anthropic-sdk-python/commit/a57e30ac1bafb54387bf631be2081bfdb3782911)) * **docs:** updates to descriptions and examples ([e1535b6](https://github.com/anthropics/anthropic-sdk-python/commit/e1535b6919441448dddf00e2636cb8c60a721a43)) ### v0.116.0 - Date: 2026-07-02 - Version: v0.116.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.116.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.116.0 - **added** — Add agent-memory-2026-07-22 beta header to API ##### 0.116.0 (2026-07-02) Full Changelog: [v0.115.1...v0.116.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.115.1...v0.116.0) ###### Features * **api:** add agent-memory-2026-07-22 beta header ([e181d5c](https://github.com/anthropics/anthropic-sdk-python/commit/e181d5c1b233d5b0b313c78b27cf1dd27f620e74)) ### v0.115.1 - Date: 2026-07-01 - Version: v0.115.1 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.115.1 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.115.1 - **removed** — Remove nonfunctional types from the SDK ##### 0.115.1 (2026-07-01) Full Changelog: [v0.115.0...v0.115.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.115.0...v0.115.1) ###### Chores * **api:** remove some nonfunctional types from the SDKs ([5e7c431](https://github.com/anthropics/anthropic-sdk-python/commit/5e7c431ef31b72b3f1f59902e678316fea14d983)) ### v0.115.0 - Date: 2026-06-30 - Version: v0.115.0 - Original notes: https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.115.0 - Permalink: https://whatsnew.fyi/product/anthropic-sdk-python/releases/v0.115.0 - **added** — Add support for Managed Agents event delta streaming - **added** — Add support for agent overrides - **added** — Add support for reverse pagination - **added** — Add support for vault credential injection scoping - **added** — Add support for agent and deployment webhook events ##### 0.115.0 (2026-06-30) Full Changelog: [v0.114.0...v0.115.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.114.0...v0.115.0) ###### Features * **api:** add support for Managed Agents event delta streaming, agent overrides, reverse pagination, vault credential injection scoping, and agent and deployment webhook events ([8c23f7e](https://github.com/anthropics/anthropic-sdk-python/commit/8c23f7ef103c287362364c12503de85eb31f07fb))