A developer migrating an MCP server and two clients from FastMCP 3 to FastMCP 4 documented several breaking changes that compile but fail at runtime. Key issues include a pip in-place upgrade leaving …
Simon Willison released llm-anthropic 0.27, an Anthropic plugin for LLM, to ensure compatibility with the anthropic v1.0.0 Python library, which switched from httpx to httpx2. The update was prompted …
Simon Willison released LLM 0.33 on August 22, 2026, as a non-prerelease version, moving the project's HTTP dependency from httpx to httpx2. The update follows a temporary compatibility fix in LLM 0.3…
LLM 0.32.1, a dot-release of the command-line tool for running AI models, fixes broken fresh installs caused by the OpenAI Python library dropping its usage of httpx, which LLM depended on transitivel…
Anthropic released the Python SDK v1.0 on August 20, 2026, moving the HTTP layer to httpx2, requiring Python 3.10+, and removing long-deprecated features including the legacy Text Completions API and …
The MCP Python SDK v2 beta is available today, supporting the July 28, 2026 revision of the MCP specification, which introduces a stateless core, extensions framework, MCP Apps, Tasks as an extension,…