Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
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Official Claude docs covering tools, prompts, and best practices.
Anthropic's official Claude documentation portal. Covers the API, Claude Code, the Agent SDK, prompt engineering, and best practices. The canonical reference for everything Anthropic ships.
Charted
Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
Anthropic's canonical essay on agent design — workflows vs agents, and five composable patterns.
HumanLayer's 12 design principles for production-grade LLM agents — the closest thing to a 'best practices' manifesto.