devtools-app-setup

devtools-app-setup is a skill for Claude Code, Codex from TanStack/devtools. It costs 66 tokens per session (2,410 once invoked), scanned A, original, MIT.

Setup instructions for TanStack Devtools, an in-app development panel for inspecting and debugging applications built with React, Vue, Solid, or Preact. It covers choosing a framework adapter, adding plugins, and configuring the panel.

In plain words
What is it for?
Use it to install TanStack Devtools, mount it in an app, add Query or Router panels, and configure its position, hotkeys, theme, opening behavior, and saved settings.
Why use it?
It gives developers a consistent place to open development tools without wiring each framework and plugin from scratch.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to install TanStack Devtools, mount it in an app, add Query or Router panels, and configure its position, hotkeys, theme, opening behavior, and saved settings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tanstack/devtools/devtools-app-setup
Install

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.

Any agent
npx skills add TanStack/devtools --skill devtools-app-setup
Clone the repo
git clone --depth 1 https://github.com/TanStack/devtools

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 devtools-app-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/tanstack/devtools/devtools-app-setup/github.svg)](https://agentmods.dev/skills/tanstack/devtools/devtools-app-setup)
Your own site
<a href="https://agentmods.dev/skills/tanstack/devtools/devtools-app-setup"><img src="https://agentmods.dev/badge/skills/tanstack/devtools/devtools-app-setup/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 devtools-app-setup

Your own site · 80×15
<a href="https://agentmods.dev/skills/tanstack/devtools/devtools-app-setup"><img src="https://agentmods.dev/badge/skills/tanstack/devtools/devtools-app-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,410 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high YARA Match · line 3
    YARA rule matched a hack tool or exploit indicator (offensive tools, reconnaissance, privilege escalation, or exploit frameworks).
    Fix: Remove offensive tool references and exploit code. Legitimate agent skills should not contain penetration testing tools, exploit frameworks, or reconnaissance utilities.
  • high Prompt Injection · line 242
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
How audits are shown
Origin original 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 $0.00066 $0.02410
Opus 5.5 $0.00026 $0.00964
Sonnet 5.5 $0.00013 $0.00482
Haiku 4.5 $0.00007 $0.00241

Measured 1mo ago against content hash c77ea90be986, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

devtools-app-setup 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.

packages/devtools/skills/devtools-app-setup/SKILL.md · 361 lines

How it starts

The opening of the file, as written. The whole thing — 361 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TanStack Devtools App Setup

Setup

React (primary)

Install as dev dependencies:

npm install -D @tanstack/react-devtools @tanstack/devtools-vite

Mount TanStackDevtools at the root of your application:

import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client'
import { TanStackDevtools } from '@tanstack/react-devtools'
import App from './App'

createRoot(document.getElementById('root')!).render(
  <StrictMode>
    <App />
    <TanStackDevtools />
  </StrictMode>,
)

Add plugins via the plugins prop. Each plugin needs name (string) and render (JSX element or render function):

import { TanStackDevtools } from '@tanstack/react-devtools'
import { ReactQueryDevtoolsPanel } from '@tanstack/react-query-devtools'
import { TanStackRouterDevtoolsPanel } from '@tanstack/react-router-devtools'
;<TanStackDevtools
  plugins={[
    {
      name: 'TanStack Query',
      render: <ReactQueryDevtoolsPanel />,
    },
    {
      name: 'TanStack Router',
      render: <TanStackRouterDevtoolsPanel />,
    },
  ]}
/>

Vue

npm install -D @tanstack/vue-devtools

Vue uses component (not render) in plugin definitions. This is the TanStackDevtoolsVuePlugin type:

<script setup lang="ts">
import { TanStackDevtools } from '@tanstack/vue-devtools'
import type { TanStackDevtoolsVuePlugin } from '@tanstack/vue-devtools'
import { VueQueryDevtoolsPanel } from '@tanstack/vue-query-devtools'

const plugins: TanStackDevtoolsVuePlugin[] = [
  { name: 'Vue Query', component: VueQueryDevtoolsPanel },
]
</script>

<template>
  <App />
  <TanStackDevtools :plugins="plugins" />
</template>

The Vite plugin (@tanstack/devtools-vite) is optional for Vue but recommended for enhanced console logs and go-to-source.

Solid

npm install -D @tanstack/solid-devtools @tanstack/devtools-vite
import { render } from 'solid-js/web'
import { TanStackDevtools } from '@tanstack/solid-devtools'
import { SolidQueryDevtoolsPanel } from '@tanstack/solid-query-devtools'
import App from './App'

render(
  () => (
    <>
      <App />
      <TanStackDevtools
        plugins={[
          {
            name: 'TanStack Query',
            render: <SolidQueryDevtoolsPanel />,
          },
        ]}
      />
    </>
  ),
  document.getElementById('root')!,
)

Read the full file on GitHub · 361 lines

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. 1mo ago First seen · 361 lines · 66 tokens per session scan A c77ea90be986

Subscribe to this mod's changes

devtools-app-setup is a skill published in the GitHub repository TanStack/devtools (506 stars, last pushed today), licensed MIT. It adds 66 tokens to every session and 2,410 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 2026-08-30.

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