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evie: Skill for Claude Code

.agents/skills/no-use-effect/SKILL.md

no-use-effect is a skill for Claude Code, Codex from trycompai/evie. It costs 64 tokens per session (1,627 once invoked), scanned A, original, no licence file.

A set of rules for avoiding React’s useEffect hook when writing, changing, or reviewing components. It includes five replacement patterns and one escape hatch for code that must run when a component mounts.

In plain words
What is it for?
Use it during React development and code review when deciding whether an effect is needed or can be replaced with another pattern.
Why use it?
It helps prevent effects that add unnecessary complexity or run at the wrong time in React components.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is trycompai/evie's own configuration. It tells Claude Code and Codex how to work on evie itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything evie configures →

not rated 8repo 6d ago A scan 64 tokens no licence
View source ↗ trycompai/evie evie-landing-two.vercel.app
Reuse

Borrowing it

Nothing to install: this file belongs to trycompai/evie. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/trycompai/evie/main/.agents/skills/no-use-effect/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/trycompai/evie

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for no-use-effect

README.md
[![agentmods](https://agentmods.dev/badge/skills/trycompai/evie/no-use-effect/github.svg)](https://agentmods.dev/skills/trycompai/evie/no-use-effect)
Your own site
<a href="https://agentmods.dev/skills/trycompai/evie/no-use-effect"><img src="https://agentmods.dev/badge/skills/trycompai/evie/no-use-effect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for no-use-effect

Your own site · 80×15
<a href="https://agentmods.dev/skills/trycompai/evie/no-use-effect"><img src="https://agentmods.dev/badge/skills/trycompai/evie/no-use-effect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,627 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.01627
Opus 5.5 $0.00026 $0.00651
Sonnet 5.5 $0.00013 $0.00325
Haiku 4.5 $0.00006 $0.00163

Measured 2mo ago against content hash f3656a0d92ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

no-use-effect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/no-use-effect/SKILL.md · 234 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 234 lines · 64 tokens per session scan A f3656a0d92ad

Subscribe to this mod's changes

no-use-effect is a skill published in the GitHub repository trycompai/evie (8 stars, last pushed 6d ago), with no licence file. It adds 64 tokens to every session and 1,627 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

FrontendReact
Related

no-use-effect compared with skills from other repositories

no-use-effect next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
no-use-effecttrycompai/evieSkill86d agononeA64Claude Code, Codex
build-ghost-appTryGhost/GhostSkill56kyesterdayMITA44Claude Code, Codex
chakra-ui-builderchakra-ui/chakra-uiSkill41kyesterdayMITA214Claude Code, Codex
material-ui-tailwindmui/material-uiSkill99kyesterdayMITA67Claude Code, Codex
fuzzy-rankingTanStack/tableSkill29k4d agoMITA62Claude Code, Codex
r3f-best-practiceszebbern/claude-code-guideSkill4.7k3d agoMITA74Claude Code, Codex
git-safetytamagui/tamaguiSkill14ktodayMITA0Claude Code