--- title: "Codemod Migration Assistant - Air Market" description: "When a framework or library changes and hundreds of files need the same edit, doing it by hand is slow and easy to get wrong. This runs those mechanical edits for you, checking first whether someone…" canonical: "https://airmarket.ai/app/codemod" --- [Air Market](/) / [Developer Tools](/category/devtools) / Codemod Migration Assistant Skill by [Codemod](/@codemod) # Codemod Migration Assistant Sweeping changes across a codebase, run the same way every time ## What this does When a framework or library changes and hundreds of files need the same edit, doing it by hand is slow and easy to get wrong. This runs those mechanical edits for you, checking first whether someone has already written one for your case. You can do a dry run to see what would change before anything is applied. ### Top 3 things it does for you - Upgrade a library across the whole project - Move off a deprecated API - Preview a change before it touches files ## Information **Codemod Migration Assistant at a glance** | | | | --- | --- | | Kind | Skill | | Publisher | [Codemod](/@codemod) | | Category | [Developer Tools](/category/devtools) | | Works with | Agent Skills - an open standard supported by 40+ agents | | Size | 14 KB | | Licence | Apache-2.0 | | Repository | [codemod/codemod](https://github.com/codemod/codemod/tree/c2e514ec155d6d5af8d3051bb5d9aad1ec31e0a5/skills/codemod) | | GitHub stars | 1,075 (as of Nov 2026) | | Installs | 3, counted by skills.sh (Nov 2026) | ## Security report **Verified.** AIR scanned this exact version of Codemod Migration Assistant and recorded 0 findings and 2 flagged items. AIR's verdict: **safe**. **What Codemod Migration Assistant's check was run against** | | | | --- | --- | | Commit | c2e514ec155d6d5af8d3051bb5d9aad1ec31e0a5 | | Content hash | fe3f7b782fd9e796b4b1ceb22de821553ada8652c195ec7eac3bc42e7f62935e | | Files read | [Browse the files at this exact commit](https://github.com/codemod/codemod/blob/c2e514ec155d6d5af8d3051bb5d9aad1ec31e0a5/skills/codemod/SKILL.md) | A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned. [Read the full security report for Codemod Migration Assistant](/security/codemod) ## About Codemod Migration Assistant Framework migrations, library upgrades, version bumps and API changes all come down to the same mechanical edits repeated across a codebase. This drives the Codemod CLI so those edits happen in a repeatable way rather than file by file. The order of work is deliberate. It searches the Codemod Registry for an existing package first, prefers deterministic codemods over open-ended AI rewrites, and runs a dry run before applying anything. A new codemod package is authored only when nothing suitable already exists. It also covers the surrounding work: inspecting the AST, looking up tree-sitter node types, and pulling up Codemod documentation through the `codemod ai` commands. ## What's inside - SKILL.md - instructions - agents/openai.yaml - data - commands/codemod.md - reference ## Questions ### Is Codemod Migration Assistant safe to install? AIR scanned this exact version of Codemod Migration Assistant and recorded 0 findings and 2 flagged items. AIR's verdict: safe. The verdict is named by the content that was read, at commit c2e514ec155d, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/codemod. ### How do I install Codemod Migration Assistant? Open https://airmarket.ai/app/codemod on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/codemod/codemod/tree/c2e514ec155d6d5af8d3051bb5d9aad1ec31e0a5/skills/codemod. Install from that link, not the branch. ## Related on Air Market - [More Developer Tools listings](/category/devtools) - [Everything by Codemod](/@codemod) --- Canonical URL: