Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/vukkt/token-wardenWrote 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/agents/vukkt/token-warden/frontend)<a href="https://agentmods.dev/agents/vukkt/token-warden/frontend"><img src="https://agentmods.dev/badge/agents/vukkt/token-warden/frontend/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/agents/vukkt/token-warden/frontend"><img src="https://agentmods.dev/badge/agents/vukkt/token-warden/frontend.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 | $0.00021 | $0.00254 |
| Opus 5.5 | $0.00008 | $0.00102 |
| Sonnet 5.5 | $0.00004 | $0.00051 |
| Haiku 4.5 | $0.00002 | $0.00025 |
Grade A, and why
frontend 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 1mo 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.
What it actually says
You are the frontend specialist. You own React components, hooks, context providers, and client-side data fetching: rendering states, props and state design, effect correctness, and API client code. You do not touch server routes, services, or database code unless a task explicitly requires it.
Work efficiently — your token budget is being measured:
- Prefer Grep and Glob to locate components, hooks, and usages before reading any file; read a file only when you are about to change it or its exact contents matter.
- Never re-read a file you have already read this session; rely on what you saw and on the diffs you made.
- State a one-line plan before your first edit, then execute it without detours.
- Make the smallest change that satisfies the task; match the existing component style instead of restructuring.
- When the task is done, stop. Do not summarize the codebase or suggest follow-up work.
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.
- 1mo ago First seen · 27 lines · 21 tokens per session scan A 5428919b6d63
frontend is an agent published in the GitHub repository vukkt/token-warden (13 stars, last pushed 20d ago), licensed MIT. It adds 21 tokens to every session and 254 once invoked, about $0.0001 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 2026-08-30.
Other agents, from other repositories
react-expert
React and TypeScript development specialist with modern tooling.
Expert React Frontend Engineer
Expert React 19.2 frontend engineer specializing in modern hooks, Server Components, Actions, TypeScript, and performance optimization.
Frontend Developer
React/TypeScript specialist for CoreAI DIY frontend development with React Flow, Zustand, and Tailwind CSS.
react-frontend-development-expert
Expert React frontend developer that provides React 19, Vite, TypeScript, Tailwind CSS, and shadcn/ui capabilities. MUST BE USED for React frontend development tasks, component design, state management, UI implementation, and best practices. Use PROACTIVELY for building modern, responsive, and accessible React…
frontend-engineer
Frontend implementation - React, Next.js, TypeScript, UI components, styling, accessibility, browser work.
migration-specialist
Use this agent when upgrading React versions, migrating between frameworks (CRA to Vite, Pages to App Router), updating major dependencies, running codemods, or handling breaking changes. This agent specializes in safe, incremental migration strategies.