devtools-app-setup

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

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.

agentmods
npx agentmods add skills/tanstack/devtools/devtools-app-setup
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.

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. Scan, not verified.
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 $0.00066 $0.02410
Opus 5 $0.00033 $0.01205
Sonnet 5 $0.00013 $0.00482
Haiku 4.5 $0.00007 $0.00241

Measured yesterday against content hash c77ea90be986, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 yesterday.

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. yesterday 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 (493 stars, last pushed 2d ago), licensed MIT. It adds 66 tokens to every session and 2,410 once invoked, about $0.0003 per session on Opus 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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