// event · sdk
Anthropic Python SDK v1.12.0 adds claude-haiku-5-5 and typed computer/browser tool calls
sdkvendor: Anthropicpublished: 5d agoconfidence: 0.90id: dcdb8453-bdc0-4b0d-a0db-2708209f3642
Anthropic's Python SDK v1.12.0 ships support for the new claude-haiku-5-5 model, adds typed tool calls for the computer and browser toolsets, exposes web_search and code_execution in model capabilities, adds url_sources to the Managed Agents web_fetch tool config, surfaces a lifecycle filter and line field on /v1/models, and documents the 256 agent-tools limit.
capability delta
An agent can now call claude-haiku-5-5 and use typed computer/browser tool calls, configure url_sources on the Managed Agents web_fetch tool, and filter models by lifecycle stage via the official Python SDK.
curator note
Haiku 5.5 model identifier is new; headline features are typed computer/browser toolset tool calls and web_fetch url_sources for Managed Agents.
// install
pip install anthropic==1.12.0pypi · anthropic @ 1.12.0
// example
python
from anthropic import Anthropic
client = Anthropic()
message = client.messages.create(
model="claude-haiku-5-5",
max_tokens=1024,
tools=[{"type": "computer_20250124", "name": "computer", "display_width_px": 1280, "display_height_px": 800}],
messages=[{"role": "user", "content": "Open a browser and search for the latest AI news."}],
)
print(message)
// links