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Convex Migration

convex-migration

guidance on how to properly do data migrations in Convex

SKILL.md

Full skill instructions

Full docs

Use @convex-dev/​migrations in convex/​migrations.ts (reference convex_migrations.md for full guidance). The standard flow is:

  • loosen schema/​app to tolerate old+new values
  • add migrations.define({ table, migrateOne }) in convex/​migrations.ts (idempotent; skip no‑ops; no external APIs).
  • dry run: npx convex run migrations:runYourFn '{"dryRun":true,"cursor":null}'
  • full run: npx convex run migrations:runYourFn '{"cursor":null}'*
  • monitor: npx convex run --component migrations lib:getStatus --watch
  • cancel: npx convex run --component migrations lib:cancel '{"name":"migrations:yourFnName"}'.

*"cursor":null makes it to real work from the start (as opposed to the dry-run default); omit only when resuming from a specific cursor.

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