Anthropic Claude
Stack Pack.

Claude coverage from the lens of building production systems — not chat demos. Prompt caching as the cost / latency lever, tool use design, the Agent SDK for long-running tasks, batch API for offline workloads, computer use for browser automation, citations + memory for grounded recall.

Why it's in the catalog. Claude's 2025–26 cadence (Opus 4.7, Sonnet 4.6, Haiku 4.5) shifted the cost-quality frontier. The pack carries the opinion that prompt caching is non-negotiable for any production system, tool use beats embeddings for most agentic flows, and the Agent SDK is the right surface for multi-step work.

Headline products and features the pack carries opinions on. Each lives as its own canonical page under stacks/anthropic-claude/<product>.md in the etyb-skills repo — currency-stamped, sourced, opinionated.

• Claude Opus 4.7 (1M context)
• Claude Sonnet 4.6
• Claude Haiku 4.5
• Prompt caching
• Tool use + JSON mode
• Agent SDK
• Batch API
• Computer use
• Citations + memory
• Admin API
• Files API
• Extended thinking

When /etyb routes a request to one of these roles AND the Anthropic Claude pack is in play, the role's reference is composed with the platform-flavored knowledge from this stack. Same role, sharper answer.

• › ai-ml-engineer
• › backend-architect
• › system-architect
• › security-engineer

The three things on Anthropic Claude that a 2024-cutoff model is most likely to get wrong — and that this pack reflects.

• Opus 4.7 + 1M context: prompt caching becomes the only viable cost model for long-context apps
• Agent SDK: built-in subagent dispatch, tool use, and durable execution
• Batch API: 50% off list price for non-urgent workloads with 24h SLA

The Anthropic Claude pack comes with /etyb — one install, every pack ready to go. The overlay loads automatically when the work calls for it.

$ npx skills add e-t-y-b/etyb-skills

See the full install guide for Claude Code plugin and manual routes.