tanstack-devtools

A shared debugging panel for TanStack libraries, including TanStack Query and TanStack Router. Debugging means examining an app while it runs to find problems.

In plain words
What is it for?
It helps inspect application state in real time and extend the panel with plugins, including support for React applications.
Why use it?
It brings information from several TanStack tools into one place instead of requiring separate debugging panels.

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/recomposesh/recompose/tanstack-devtools
Any agent
npx skills add recomposesh/recompose --skill tanstack-devtools
Clone the repo
git clone --depth 1 https://github.com/recomposesh/recompose

Made for: Claude Code, Codex.

Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,693 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00022 $0.01693
Opus 5 $0.00011 $0.00847
Sonnet 5 $0.00004 $0.00339
Haiku 4.5 $0.00002 $0.00169

Measured 2d ago against content hash 1e70693ddba7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tanstack-devtools 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 2d 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.

Origin

This is a copy

100% identical to tanstack-devtools — 0 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.

.agents/skills/tanstack-devtools/SKILL.md · 293 lines

How it starts

The opening of the file, as written. The whole thing — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

TanStack Devtools provides a unified debugging interface that consolidates devtools for TanStack Query, Router, and other libraries into a single panel. It features a framework-agnostic plugin architecture, real-time state inspection, and support for custom plugins. Built with Solid.js for lightweight performance.

React: @tanstack/react-devtools Core: @tanstack/devtools Status: Alpha

Installation

npm install @tanstack/react-devtools

Basic Setup

import { TanStackDevtools } from '@tanstack/react-devtools'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

const queryClient = new QueryClient()

function App() {
  return (
    <QueryClientProvider client={queryClient}>
      <TanStackDevtools />
      {/* Your app content */}
      <MyApp />
    </QueryClientProvider>
  )
}

Built-in Plugins

Query Devtools

import { TanStackDevtools } from '@tanstack/react-devtools'
import { ReactQueryDevtoolsPanel } from '@tanstack/react-query-devtools'

function App() {
  return (
    <QueryClientProvider client={queryClient}>
      <TanStackDevtools
        plugins={[
          {
            id: 'react-query',
            name: 'React Query',
            render: () => <ReactQueryDevtoolsPanel />,
          },
        ]}
      />
      <MyApp />
    </QueryClientProvider>
  )
}

Router Devtools

import { TanStackDevtools } from '@tanstack/react-devtools'
import { TanStackRouterDevtoolsPanel } from '@tanstack/react-router-devtools'

function App() {
  return (
    <TanStackDevtools
      plugins={[
        {
          id: 'router',
          name: 'Router',
          render: () => <TanStackRouterDevtoolsPanel router={router} />,
        },
      ]}
    />
  )
}

Combined Setup

import { TanStackDevtools } from '@tanstack/react-devtools'
import { ReactQueryDevtoolsPanel } from '@tanstack/react-query-devtools'
import { TanStackRouterDevtoolsPanel } from '@tanstack/react-router-devtools'

function App() {
  return (
    <QueryClientProvider client={queryClient}>
      <TanStackDevtools
        plugins={[
          {
            id: 'react-query',
            name: 'React Query',
            render: () => <ReactQueryDevtoolsPanel />,
          },
          {
            id: 'router',
            name: 'Router',
            render: () => <TanStackRouterDevtoolsPanel router={router} />,
          },
        ]}
      />
      <MyApp />
    </QueryClientProvider>
  )
}

Read the full file on GitHub · 293 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. 2d ago First seen · 293 lines · 22 tokens per session scan A 1e70693ddba7

Subscribe to this mod's changes

tanstack-devtools is a skill published in the GitHub repository recomposesh/recompose (24 stars, last pushed 5d ago), licensed MIT. It adds 22 tokens to every session and 1,693 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to tanstack-devtools, differing in 0 lines, and is treated as a copy.

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