Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
- official
- models
- announcement
- fable
Anthropic's official documentation for Agent Skills — SKILL.md structure, loading, and progressive disclosure.
The official Agent Skills documentation on platform.claude.com: what a skill is, how SKILL.md frontmatter and bundling work, how the agent discovers and loads skills progressively, and how to author your own. The authoritative reference behind the community skill ecosystem — start here before trusting third-party skill tutorials.
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.