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Migrating Effect code from v3 to v4 v1.0.0

Use this resource to migrate a repository from Effect v3 to Effect v4 using the official data

New

  • 494 downloads
  • 149 likes
  • 248 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install effect-v3-to-v4-migration

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent clones the reference repositories, reads the migration guide section by section, then applies the renames, removals and signature changes listed in the upstream documentation. It can delegate bounded tasks to sub-agents.

Mostly picked by

Updated November 2, 2026

Card for the “Migrating Effect code from v3 to v4” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

Similar resources

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What you get

  • SKILL.md: migration workflow and targeted reading of the guide
  • SKILL.md: local checkout setup and project-level changes

Good fit for

  • You need to move a project from Effect v3 to v4
  • You are upgrading an @effect/* package across the v3 and v4 boundary

Not for

    Tags

    • Effect
    • migration
    • TypeScript
    • upgrade
    • v4

    About

    You say

    “Migrate this service from Effect v3 to v4 using the migration guide from the official repository.”

    Card for the “Migrating Effect code from v3 to v4” skill

    Skill published by effect-ts under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to migrate a repository from Effect v3 to Effect v4 using the official data
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md8.3 KB

    Origin and licence

    Listed unmodified

    Author
    effect-ts
    Source
    github.com/effect-ts/skills/tree/155c50c911f9c99c294ef8a4461981c5bbe6453e/skills/effect-v3-to-v4
    Licence
    MIT

    Notice

    « effect-v3-to-v4 » (effect-ts, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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