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PATTERN Cited by 1 source

Migration as Agent Skill

Pattern

Ship migration tooling (source framework → target framework; deprecated API → new API; v1 → v2) as an Agent Skill that runs inside any supported AI coding tool, rather than as a one-tool-specific codemod script or CLI.

Installation + invocation collapse to two verbs:

npx skills add <org>/<skill>
# then in the coding tool:
"migrate this project to <target>"

Forces

  • Migration tools have historically been language- / tool-specific (jscodeshift, ts-migrate, Rector, Quarkus migration scripts, …).
  • AI coding agents have become the developer's primary interface for anything non-mechanical — "migrate this project" is the natural prompt.
  • Agent Skills (agentskills.io) provide a cross-tool standard for publishing task-instructional documents at a fixed well-known URL (concepts/agent-skills-discovery).
  • Migrations benefit from remediation-aware guidance — "here's why this issue exists; here's the fix" — which an AI skill can do but a codemod script cannot.

Solution shape

  1. Publish an Agent Skill at <org>/<skill-name> (npm package / GitHub repo).
  2. The skill ships:
  3. Compatibility-check logic.
  4. Dependency-install commands.
  5. Config-generation templates / rules.
  6. Known-limitations documentation the AI reads before flagging issues.
  7. User runs npx skills add <skill> to install.
  8. User prompts the coding tool to migrate.
  9. The coding tool invokes the skill; the skill does the work in-session.

Canonical application — cloudflare/vinext

npx skills add cloudflare/vinext
# in Claude Code / OpenCode / Cursor / Codex / others:
"migrate this project to vinext"

The skill:

  • Checks compat with vinext's 94 % API coverage.
  • Installs deps.
  • Generates vinext + Worker config.
  • Starts dev server.
  • Flags anything needing manual attention based on vinext's known limitations.

Consequences

  • Cross-tool by construction — works in every tool that supports Agent Skills; user doesn't pick a specific tool's codemod flavour.
  • Explainable — when the skill flags a migration issue, it can explain the why with prose that the AI can then reason about with the user.
  • Updatable like a package — npx skills refresh.
  • Single-prompt UX — user says "migrate" once.
  • Requires Agent Skills adoption — limited to tools supporting the standard.
  • Dependency on the underlying AI model's capability to apply the skill competently.

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