# Effect Development

> Effect development guidance. Use when implementing or reviewing code that composes Effect APIs or patterns.

- Skill: `foldkit/effect-development` (Agent Skill)
- Install (CLI): `npx skillmds@latest add foldkit/effect-development`
- Raw SKILL.md: https://api.skillmd.com/api/skills/foldkit/effect-development/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: foldkit (https://skillmd.com/u/foldkit)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/foldkit/effect-development

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Use the repository's AI documentation as targeted reference, not ambient
context:

1. Identify the Effect APIs and concepts involved in the change.
2. Search `LLMS.md` and `ai-docs/src` for those names and concepts, then read
   the matching sections and examples.
3. Apply the relevant guidance and inspect nearby source and tests for any
   repository-internal conventions not covered by the documentation.

The task is ready for implementation when every material Effect API or pattern
has matching local guidance, or the search has established that none exists.