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{
"id": 42,
"name": "Ada Lovelace",
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"active": true
}Long reads, fresh takes, signal over noise.
Claude Opus 5.5 tool_choice 400: 3 SDKs Tested (2026)
Claude Opus 5.5 rejects forced tool_choice with a 400. I captured what the AI SDK, LangChain and the raw SDK actually send, and built a preflight check.
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Agent Harness GA: Microsoft Ships the 2026 Agent Runtime
Join hosts Alex and Jamie in this episode of the Nerd Level Tech AI Cast as they dive into Microsoft’s groundbreaking release of the Agent Harness GA, the game-changing framework that transforms plain language models into effective AI agents. Discover why the real magic lies not in the AI itself, but in the harness that manages context, permissions, and functionality—turning a simple model into a capable assistant. Tune in for insights that reveal the true complexity behind AI development and why it's more than just a pretty interface!
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