Anthropic's official "Code with Claude" workshop materials — nine hands-on courses on skills, MCP, evals and Claude Managed Agents.
- official
- workshops
- anthropic
- managed-agents
Which Tools Do Coding Agents Install? (Armature)
16,893 sessions of experiment data on how Claude Code, Codex, and Cursor actually choose third-party tools.
Armature's experiment on tool selection by coding agents: 16,893 sessions, 1,163 prompt variants, 75 repos, 10 languages (first public wave: 5,292 valid sessions). Headline findings: the three agents agreed on the same tool in only 42% of scenarios; Claude Code leans on prior knowledge (~30% web search) while Codex searched 94% of the time; "being mentioned is not being chosen" — PayPal was cited 139 times and won zero selections (Stripe won 124); winners differ by language for the same need (Resend-TS, SendGrid-Python, Postmark-Go). The author discloses Armature sells dev-tools growth services — read with that in mind.
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Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
- official
- models
- announcement
- fable
Anthropic's canonical essay on agent design — workflows vs agents, and five composable patterns.
- official
- agents
- engineering
- patterns