## 0.122.0 (2026-08-13) Full Changelog: [v0.121.0...v0.122.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.121.0...v0.122.0) ### Features * **api:** add output_behavior to dream creation (create a new memory store or update the input store in place) ([852c4bb](https://github.com/anthropics/anthropic-sdk-python/commit/852c4bbe4a3a425a8780e89ea6c3cae54836e8bb)) ### Bug Fixes * **bedrock,aws:** run SigV4 signing off the event loop in async clients ([#334](https://github.com/anthropics/anthropic-sdk-python/issues/334)) ([2bae6c8](https://github.com/anthropics/anthropic-sdk-python/commit/2bae6c8cb86f693f4e1e3dd13bb64e03b01fe720)) * **bedrock:** expose beta.messages.parse, stream and tool_runner ([#366](https://github.com/anthropics/anthropic-sdk-python/issues/366)) ([6eca7bb](https://github.com/anthropics/anthropic-sdk-python/commit/6eca7bb19f968856b5652d5471e3ca9fc3fe8641)) * **client:** add models ([52e9d94](https://github.com/anthropics/anthropic-sdk-python/commit/52e9d9453a46a281846f9860e742bfc938bafebc)) * **client:** keep token exchange bound per client across copy() ([#388](https://github.com/anthropics/anthropic-sdk-python/issues/388)) ([c13e6e3](https://github.com/anthropics/anthropic-sdk-python/commit/c13e6e30b75d73b9af51468ae0deae6e6aca1ba0)) * **client:** read PathLike contents passed inside a file tuple ([070f953](https://github.com/anthropics/anthropic-sdk-python/commit/070f95332daea9dc3ed19fe91251d6e5285e5560)) * **client:** treat empty ANTHROPIC_API_KEY / ANTHROPIC_AUTH_TOKEN as unset ([#341](https://github.com/anthropics/anthropic-sdk-python/issues/341)) ([76a2e68](https://github.com/anthropics/anthropic-sdk-python/commit/76a2e68531d50c9043a5ac58919527287e56a842)) * **streaming:** add context to malformed tool input JSON errors in the non-beta accumulator ([#339](https://github.com/anthropics/anthropic-sdk-python/issues/339)) ([a343e17](https://github.com/anthropics/anthropic-sdk-python/commit/a343e17b7bc970f656fa02a980b0baa2bf8c3b80)) * **streaming:** apply all message_delta fields when accumulating streamed messages ([#380](https://github.com/anthropics/anthropic-sdk-python/issues/380)) ([fc1599b](https://github.com/anthropics/anthropic-sdk-python/commit/fc1599bd4c25ad5550d55f8f1c8f5c5664e19ed1)) * **streaming:** emit input_json events for server tool use blocks ([#336](https://github.com/anthropics/anthropic-sdk-python/issues/336)) ([ccfc8e1](https://github.com/anthropics/anthropic-sdk-python/commit/ccfc8e140e8e6b824e74c8fd9bed2587e60c5b6f)) * **streaming:** keep omitted content block fields unset in accumulated messages ([#346](https://github.com/anthropics/anthropic-sdk-python/issues/346)) ([cd40aab](https://github.com/anthropics/anthropic-sdk-python/commit/cd40aab995181aa44e9fbdb7b6ce1fa82357c18b)) * **streaming:** run the request transform once in messages.stream() ([#347](https://github.com/anthropics/anthropic-sdk-python/issues/347)) ([81a92da](https://github.com/anthropics/anthropic-sdk-python/commit/81a92dafa2efd87c850950d7d84af727d01c2e47)) * **streaming:** silence pydantic serializer warnings on message_stop events ([#338](https://github.com/anthropics/anthropic-sdk-python/issues/338)) ([41f9cdc](https://github.com/anthropics/anthropic-sdk-python/commit/41f9cdcac36d4c6a3d9d2c8becaa632c75a44054)) * **tools:** reject symlink loops in tool paths and skip special skill-archive members ([#322](https://github.com/anthropics/anthropic-sdk-python/issues/322)) ([43e8669](https://github.com/anthropics/anthropic-sdk-python/commit/43e8669d066a1d18ffdbff505fc99ac45aa7492e)) * **vertex:** expose beta.messages.parse and tool_runner ([#367](https://github.com/anthropics/anthropic-sdk-python/issues/367)) ([96723a0](https://github.com/anthropics/anthropic-sdk-python/commit/96723a000b6179f0bee51a0b5aa0129e360dc323)) ### Chores * **ci:** run breaking-change detection as a ci.yml job on every push ([6dfd16e](https://github.com/anthropics/anthropic-sdk-python/commit/6dfd16ea7a650dc65253c72264cbcb14db696c91)) * **examples:** update messages_stream.py shebang from rye to uv ([#1519](https://github.com/anthropics/anthropic-sdk-python/issues/1519)) ([7d72364](https://github.com/anthropics/anthropic-sdk-python/commit/7d7236432934073a5c83f4eca021d35ea5bbd7c8)) * **internal:** codegen related update ([21a0e3d](https://github.com/anthropics/anthropic-sdk-python/commit/21a0e3d46ea0c3842cbcb92de32876727595b1f4)) * **internal:** drop remaining references to black ([13df390](https://github.com/anthropics/anthropic-sdk-python/commit/13df3907629ac68627a13944e49ba1d12c2fdc2b)) * **internal:** remove misc things ([d6ee99e](https://github.com/anthropics/anthropic-sdk-python/commit/d6ee99e8b90f3921f74a2768748f0eea912c1dfd)) * **tests:** use pytest monkeypatch and fakes instead of unittest.mock ([55d246f](https://github.com/anthropics/anthropic-sdk-python/commit/55d246f0e55e3f51de17d53d7974ea0ea01c5a9b)) * **tests:** use pytest monkeypatch instead of unittest.mock ([e0c6488](https://github.com/anthropics/anthropic-sdk-python/commit/e0c64881c24291b77e2b0653994ac9e3c696ab00)) ### Documentation * **api:** clarify that user profile name is optional for resold profiles ([b8f9f61](https://github.com/anthropics/anthropic-sdk-python/commit/b8f9f6177cf7b49e75e2c0395eed4d21c5efb416)) * fix fulfillment typos in session runner ([#1795](https://github.com/anthropics/anthropic-sdk-python/issues/1795)) ([009b035](https://github.com/anthropics/anthropic-sdk-python/commit/009b035305e0724ce108ebd796935f91711fc6e1)) * fix incorrect docstring in AsyncAnthropicFoundry.models ([#1592](https://github.com/anthropics/anthropic-sdk-python/issues/1592)) ([f1f5e9b](https://github.com/anthropics/anthropic-sdk-python/commit/f1f5e9b9170ed04833d7c4ec0ae003978ecc19a1)) ### Refactors * use the not_given singleton instead of the legacy NOT_GIVEN alias ([eeb4d74](https://github.com/anthropics/anthropic-sdk-python/commit/eeb4d74f442678233e34af9490bae1fabaccee64))