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
Claude Code Migration Kit
Anthropic's official starter kit for large-scale language migrations — the prompts, templates and scripts behind their documented process.
The companion kit to Anthropic's "How we run large-scale code migrations with Claude Code": defaults to structure-preserving migrations (same architecture, same data structures, new language) with six templated steps from prompts/00-feasibility.md onward. A portable "judge" (your test suite, or one built by 00b-judge-setup.md) is the exit condition — no judge, no migration. Provenance is real: prompts were generalized and reviewed against production ports including Bun's 1M+ line Zig→Rust move.
What it does
- Six-step prompt ladder: feasibility → judge setup → pilot → fan-out translation → integration → fix loops, each prompt ready to paste
- templates/settings.json ships permission denies you install before fan-out, so parallel translation sessions can't run wild; prompts 03/04 verify it exists and stop without it
- Optional skill install (cp -r migration-kit/skill ~/.claude/skills/code-migration) carries the process into every session
- Honest provenance: reconstructions generalized from real migrations — the Bun port's actual "prompt" was a 576-line rulebook, not a one-liner
When to use it
For teams staring down a cross-language port (Zig→Rust, JS→TS, Python→Go scale). If your architecture stays and only the language changes, this kit turns a scary program into a checklist; the judge-first framing alone prevents the classic "we translated 80% and now nothing works" failure.
Getting started
1) Clone inside or adjacent to the repo being migrated. 2) Copy or @-import the kit's CLAUDE.md into your repo's CLAUDE.md. 3) Optional: cp -r migration-kit/skill ~/.claude/skills/code-migration (then fix [kit path] inside). 4) Open Claude Code in the target repo, fill placeholders in prompts/00-feasibility.md, paste.
Things to know
Reference code, not actively maintained; issues and PRs not monitored. Designed for structure-preserving moves — if you're redesigning as you migrate, the README flags that parts of the kit change and one part becomes invalid.
Charted
Related on the map
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