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Effect basics: the Effect<A, E, R> type v1.0.0

Use this resource to create and compose effects with the Effect library in TypeScript

New

  • 332 downloads
  • 224 likes
  • 194 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install effect-core-typed-effects

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 creates effects with succeed, fail, sync, try or tryPromise, then composes them with Effect.gen and runs them. You get typed code where successes, errors and dependencies show up in the signature.

Mostly picked by

Updated November 2, 2026

Card for the “Effect basics: the Effect<A, E, R> type” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md : the Effect<A, E, R> type and its three parameters
  • SKILL.md : succeed, fail, sync, promise and tryPromise constructors
  • SKILL.md : composition with Effect.gen and running effects

Good fit for

  • You are new to Effect and want a solid foundation
  • Your asynchronous calls have untyped errors

Not for

    Tags

    • effect
    • typescript
    • effects
    • typing

    About

    You say

    “Write an Effect function that reads a user from the database with Effect.gen and a typed error.”

    Card for the “Effect basics: the Effect<A, E, R> type” skill

    Skill published by thebushidocollective under the Apache-2.0 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 create and compose effects with the Effect library in TypeScript
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE3.8 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md15.7 KB

    Origin and licence

    Listed unmodified

    Author
    thebushidocollective
    Source
    github.com/thebushidocollective/han/tree/19caa51d5fd144ef6b2764f2332f4c856aa5d1af/plugins/frameworks/effect/skills/effect-core-patterns
    Licence
    Apache-2.0

    Notice

    « effect-core-patterns » (thebushidocollective, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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