Borrowing it
Nothing to install: this file belongs to sadanandpai/clearfrontend. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/sadanandpai/clearfrontend/main/CLAUDE.mdgit clone --depth 1 https://github.com/sadanandpai/clearfrontendWrote 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.
[](https://agentmods.dev/instructions/sadanandpai/clearfrontend/claude-md)<a href="https://agentmods.dev/instructions/sadanandpai/clearfrontend/claude-md"><img src="https://agentmods.dev/badge/instructions/sadanandpai/clearfrontend/claude-md/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.
<a href="https://agentmods.dev/instructions/sadanandpai/clearfrontend/claude-md"><img src="https://agentmods.dev/badge/instructions/sadanandpai/clearfrontend/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.01559 | $0.01559 |
| Opus 5.5 | $0.00624 | $0.00624 |
| Sonnet 5.5 | $0.00312 | $0.00312 |
| Haiku 4.5 | $0.00156 | $0.00156 |
Grade A, and why
clearfrontend CLAUDE.md 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.
This is a copy
88% identical to clearfrontend AGENTS.md — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ClearFrontend — Agent Instructions
This file is read natively by Claude Code. Identical content lives in
AGENTS.mdfor cross-agent compatibility (OpenAI Codex, etc.).
Project Overview
ClearFrontend is a Next.js 15 coding challenge platform where users solve JavaScript/TypeScript problems and get instant feedback. Code is executed server-side inside a true V8 isolate (isolated-vm + esbuild) — no external judge service, no sandboxed iframe. The backend uses Appwrite (auth + database), Redis (caching), and Vercel (deployment).
Tech Stack
| Layer | Technology |
|---|---|
| Framework | Next.js 15 (App Router), React 19 |
| Language | TypeScript 7 (strict) |
| Styling | Tailwind CSS v4 + SCSS Modules + Radix UI Themes |
| State | Zustand 5 (Immer), React Query 5 |
| Editor | Monaco Editor (@monaco-editor/react) |
| Execution | isolated-vm 6 + esbuild 0.28 |
| Backend | Appwrite (BaaS) + ioredis |
| Testing | Vitest 4 |
Key Paths
src/app/ Pages and layouts (Next.js App Router)
src/server/ Server-only code — never imported by client components
actions/ Next.js Server Actions ("use server")
data-access/ DB queries (Appwrite / Redis)
services/ External service clients
src/ui/ React components and client-side code
components/core/ Reusable atoms (no domain knowledge)
components/common/ Layout and navigation
components/modules/ Feature-specific components
store/ Zustand stores
context/ React context providers
src/common/ Zero-dependency shared code (types, challenge data, routes)
challenges/ Challenge definitions ({id}.ts)
types/ Shared TypeScript types
scripts/ CLI utilities (validate-challenges.js)
Server Actions Rules
- Always
"use server"at the top of action files. - Validate all inputs — use
isValidChallengeId()for challenge IDs. - Never expose raw DB or internal errors to the client.
- Pattern: validate → authorize → data-access → return.
- Use
respondWithErrorfor structured error responses.
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.
- 2mo ago First seen · 130 lines · 1,559 tokens per session scan A 51842c0582b3
clearfrontend CLAUDE.md is an instructions file published in the GitHub repository sadanandpai/clearfrontend (199 stars, last pushed today), licensed MIT. It adds 1,559 tokens to every session, about $0.0062 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to clearfrontend AGENTS.md, differing in 4 lines, and is treated as a copy.
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