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Anthropic Python SDK 1.0 drops httpx, breaking mocks

By PulseAugur Editorial · [2 sources] ·

Anthropic's Python SDK has released version 1.0.0, which introduces significant changes including a move from the httpx library to httpx2. This update raises the minimum Python version to 3.10 and removes several features like the legacy Text Completions API and certain parameters from the messages API. A key issue arising from this change is that HTTP mocking and tracing libraries, such as respx and pytest-httpx, which were designed to work with the older httpx, may silently fail to match requests made by the new SDK, potentially leading to tests hitting the live API or failing unexpectedly. AI

IMPACT Developers using the Anthropic SDK may face silent test failures due to incompatible HTTP mocking libraries.

RANK_REASON This is a software library update for an AI company's SDK, not a core model release or research paper.

Read on dev.to — Anthropic tag →

AI-generated summary · Google Gemini · from 2 sources. How we write summaries →

Anthropic Python SDK 1.0 drops httpx, breaking mocks

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This is a software library update for an AI company's SDK, not a core model release or research paper.
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COVERAGE [2]

  1. dev.to — Anthropic tag TIER_1 English(EN) · Manu Shukla ·

    Anthropic Python SDK 1.0 dropped httpx on 20 August 2026: what breaks in your mocks and tracing

    <h1> Anthropic Python SDK 1.0 dropped httpx on 20 August 2026: what breaks in your mocks and tracing </h1> <p><strong>Summary.</strong> Version 1.0.0 of the <code>anthropic</code> Python package was published to PyPI on 20 August 2026 at 19:58 UTC. It requires Python 3.10 or late…

  2. Mastodon — mastodon.social TIER_1 日本語(JA) · [email protected] ·

    Anthropic SDK dropped httpx. I didn't notice because it still worked after migrating.

    anthropic SDK が httpx をやめました。移行しても動くので気づけません https:// qiita.com/jqit_suwa/items/5edf 6037203a15c3fdfd?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items # qiita # Python # AI # httpx # 生成AI # Anthropic

    LINKS qiita.com/…/5edf6037203a15c3fdfd

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