Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
- official
- models
- announcement
- fable
Building Effective Agents
Anthropic's canonical essay on agent design — workflows vs agents, and five composable patterns.
Anthropic's most-cited engineering essay on building agents: the workflow-versus-agents distinction, five composable patterns (prompt chaining, routing, parallelization, orchestrator-workers, evaluator-optimizers), and the discipline of starting with the simplest thing that works. Required reading before adopting any agent framework — most "agent problems" are solved by the patterns here.
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12-Factor Agents
GuideHumanLayer's 12 design principles for production-grade LLM agents — the closest thing to a 'best practices' manifesto.
- agents
- best-practices
- production
- principles
MCP Registry
GuideOfficial curated registry of MCP servers — discovery, versioning, and metadata for the ecosystem.
- official
- mcp
- registry
- discovery