## 1.6.0 (2026-09-15)
Full Changelog: [v1.5.0...v1.6.0](https://github.com/anthropics/anthropic-sdk-python/compare/v1.5.0...v1.6.0)
### Features
* **api:** add auto mode tool permissions for Managed Agents ([909d92f](https://github.com/anthropics/anthropic-sdk-python/commit/909d92ff57dd27270796407547ffbbf521cf941e))
* **api:** add compaction parameter and signed compaction blocks (beta) ([8689179](https://github.com/anthropics/anthropic-sdk-python/commit/8689179d2c760f005d0f7736387d352b71f05bee))
* **api:** add enum types for workspace data-residency geo fields ([3dc6dbf](https://github.com/anthropics/anthropic-sdk-python/commit/3dc6dbfcea444305dd9b0cc418e26e14163bac78))
* **api:** add thinking_mismatch_allowed entries to input_transformations (beta) ([14d1792](https://github.com/anthropics/anthropic-sdk-python/commit/14d179280ebfe241ef0604fd6afc331fc69528fd))
* **api:** add url_sources to the web fetch tool ([4ba7115](https://github.com/anthropics/anthropic-sdk-python/commit/4ba7115da810cade002b1893973ac3812466d2f4))
* **api:** add workspace_id parameter to user profiles methods ([1c359b2](https://github.com/anthropics/anthropic-sdk-python/commit/1c359b22de5a33df1c30aabe367c7381510783e8))
* **client:** support async credential token providers ([95e93f7](https://github.com/anthropics/anthropic-sdk-python/commit/95e93f763e104110fc0fb855175a8551dcbe5931))
### Bug Fixes
* **api:** mark usage iteration model as nullable ([520d000](https://github.com/anthropics/anthropic-sdk-python/commit/520d000440ddbc2262e5814d76c3add2380395db))
* **api:** use one input transformation type for message and delta event ([ae86d7d](https://github.com/anthropics/anthropic-sdk-python/commit/ae86d7d7b689e9a9635270621af9fe9e7040ed57))
* **client:** honor Retry-After values above 60 seconds ([2d03ba2](https://github.com/anthropics/anthropic-sdk-python/commit/2d03ba20c747c0ee3b58f696355ce41acc605460))
* **client:** ignore invalid Retry-After values and validate maxRetries ([909d92f](https://github.com/anthropics/anthropic-sdk-python/commit/909d92ff57dd27270796407547ffbbf521cf941e))
* **client:** retry connection errors in the async client and stop blocking in the coroutine retry loop ([909d92f](https://github.com/anthropics/anthropic-sdk-python/commit/909d92ff57dd27270796407547ffbbf521cf941e))
* **client:** use the default backoff when Retry-After is out of range ([3d15f04](https://github.com/anthropics/anthropic-sdk-python/commit/3d15f04c0e83a9a11d4e79ee41b29507f8ad6d2b))
### Chores
* **deps:** bump aiohttp, pygments and pytest in the dev lockfile ([005ad11](https://github.com/anthropics/anthropic-sdk-python/commit/005ad1146d4ea008eeb7e183c9ea8f390370607e))
* **deps:** require anyio 4.1 or later ([79b4175](https://github.com/anthropics/anthropic-sdk-python/commit/79b417514b99a5f094c6f1bac8a7a52c2990e96b))
* **docs:** clarify that session_thread_id on tool use events is informational ([2ac7b60](https://github.com/anthropics/anthropic-sdk-python/commit/2ac7b60beedb00f404f5e792c7a87b51629b4082))
* **docs:** correct the compaction beta's parameter descriptions ([5048c9a](https://github.com/anthropics/anthropic-sdk-python/commit/5048c9a8446a2daa24fb918b976ffa4b8587033e))
* **internal:** sort the imports in beta_message.py ([0a92f91](https://github.com/anthropics/anthropic-sdk-python/commit/0a92f91467c5edad5d54c135a1095e798df62b07))
* **tests:** define the model tests' type alias at module level ([98c3a7a](https://github.com/anthropics/anthropic-sdk-python/commit/98c3a7ac9e8d49984cfe1dc80e1e5fbb55e106df))
* **tests:** stop the mock server without failing a passing test run ([d28aea7](https://github.com/anthropics/anthropic-sdk-python/commit/d28aea74dfdb4616112bcae68c56e3bb32793995))
### Documentation
* **api:** clarify usage.iterations entry typing under server-side fallback ([bb06629](https://github.com/anthropics/anthropic-sdk-python/commit/bb066293dfeb17413254dc773687c281b74bc264))
* stop documenting unions with their first variant's description ([7a94250](https://github.com/anthropics/anthropic-sdk-python/commit/7a94250411e45e875f9f58303145c90b9acc769e))
* use markdown formatting in most docstrings ([25f344f](https://github.com/anthropics/anthropic-sdk-python/commit/25f344fd7fcbe281d2173fe12ecd2caa3dd5d044))
▸ 主项目介绍 · anthropics/anthropic-sdk-python
▸ README 原文（同步于 2026-07-19 13:24）
# Claude SDK for Python
[](https://pypi.org/project/anthropic/)
The Claude SDK for Python provides access to the [Claude API](https://docs.anthropic.com/en/api/) from Python applications.
## Documentation
Full documentation is available at **[platform.claude.com/docs/en/api/sdks/python](https://platform.claude.com/docs/en/api/sdks/python)**.
## Installation
```sh
pip install anthropic
```
## Getting started
```python
import os
from anthropic import Anthropic
client = Anthropic(
api_key=os.environ.get("ANTHROPIC_API_KEY"), # This is the default and can be omitted
)
message = client.messages.create(
max_tokens=1024,
messages=[
{
"role": "user",
"content": "Hello, Claude",
}
],
model="claude-opus-4-6",
)
print(message.content)
```
## Requirements
Python 3.9+
## Contributing
See [CONTRIBUTING.md](./CONTRIBUTING.md).
## License
This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.