---
title: "Effect - Air Market"
description: "This repo has TypeScript code written the Effect way, specifically the v4 or effect-smol kind. If you are about to add or change some of that code, this is the help meant for it. Reach for it wheneve…"
canonical: "https://airmarket.ai/app/effect"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Effect

Skill by [Anomaly](/@anomalyco)

# Effect

Writing effect-smol TypeScript in this repo? Start here.

## What this does

This repo has TypeScript code written the Effect way, specifically the v4 or effect-smol kind. If you are about to add or change some of that code, this is the help meant for it. Reach for it whenever the file you are touching uses Effect, rather than handling it like ordinary TypeScript.

### Top 3 things it does for you

- Add Effect v4 code that fits the rest of this repo
- Rework existing effect-smol TypeScript

## Information

**Effect at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Anomaly](/@anomalyco) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Languages | en |
| Size | 3 KB |
| Licence | MIT |
| Repository | [anomalyco/opencode](https://github.com/anomalyco/opencode/tree/b67f5d741f8939703825742a4ad7a7ba2114f839/.opencode/skills/effect) |
| GitHub stars | 225,659 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Effect and flagged nothing. AIR's verdict: **safe**.

**What Effect's check was run against**

|  |  |
| --- | --- |
| Commit | b67f5d741f8939703825742a4ad7a7ba2114f839 |
| Content hash | 98306bd37e91021e8d1ddc9125ae77bec7042130ab5139b3a13e6fd138df16cc |
| Files read | [Browse the files at this exact commit](https://github.com/anomalyco/opencode/blob/b67f5d741f8939703825742a4ad7a7ba2114f839/.opencode/skills/effect/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 Effect](/security/effect)

## About Effect

This skill covers one job: working with Effect TypeScript inside this repository, specifically the Effect v4 line also known as effect-smol. If the code you are touching uses Effect, this is the context that goes with it.

It is scoped to this repo's Effect code and to that version of it, so reach for it when your work lands in those files and skip it for everything else. Nothing here speaks for other projects or other ways of writing TypeScript.

## What's inside

- SKILL.md - instructions

## Questions

### Is Effect safe to install?

AIR scanned this exact version of Effect and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit b67f5d741f89, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/effect.

### How do I install Effect?

Open https://airmarket.ai/app/effect 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/anomalyco/opencode/tree/b67f5d741f8939703825742a4ad7a7ba2114f839/.opencode/skills/effect. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Anomaly](/@anomalyco)

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Canonical URL: <https://airmarket.ai/app/effect>