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.
npx agentmods add skills/fusengine/agents/nextjs-tanstack-querynpx skills add fusengine/agents --skill nextjs-tanstack-querygit clone --depth 1 https://github.com/fusengine/agentsWrote 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/skills/fusengine/agents/nextjs-tanstack-query)<a href="https://agentmods.dev/skills/fusengine/agents/nextjs-tanstack-query"><img src="https://agentmods.dev/badge/skills/fusengine/agents/nextjs-tanstack-query.svg" alt="Measured on agentmods" 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 | $0.00035 | $0.00862 |
| Opus 5 | $0.00017 | $0.00431 |
| Sonnet 5 | $0.00007 | $0.00172 |
| Haiku 4.5 | $0.00003 | $0.00086 |
Grade A, and why
nextjs-tanstack-query 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.
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Covers serializable query keys, staleTime tuning on prefetched queries to avoid immediate refetch, cache invalidation with invalidateQueries after writes, infinite scrolling/pagination, and DevTools setup gated to development only. Does not cover the Server Component boundary itself (nextjs-server-components) or core Next.js caching primitives like use cache (nextjs-16) — this skill is specifically about TanStack Query's client-side cache layer.
TanStack Query for Next.js
TanStack Query v5 provides powerful server state management with Next.js 16 integration.
Agent Workflow (MANDATORY)
Before ANY implementation, use TeamCreate to spawn 3 agents:
- fuse-ai-pilot:explore-codebase - Analyze existing data fetching patterns
- fuse-ai-pilot:research-expert - Verify latest TanStack Query v5 docs
- mcp__context7__query-docs - Check TanStack Query + Next.js patterns
After implementation, run fuse-ai-pilot:sniper for validation.
Overview
When to Use
- Client-side data fetching with caching and revalidation
- Server-side prefetching with hydration to client
- Optimistic updates for mutations
- Infinite scrolling and pagination
- Real-time data synchronization
Why TanStack Query
| Feature | Benefit |
|---|---|
| Server prefetching | Data ready on first render, no loading flash |
| Automatic caching | Deduplication, stale-while-revalidate |
| Mutations | Optimistic updates, rollback on error |
| DevTools | Visual cache inspection |
| TypeScript-first | Full type inference |
Critical Rules
- One QueryClient per request - Create in Server Component, share via context
- Prefetch in Server Components - Use
prefetchQueryfor SSR data - HydrationBoundary required - Wrap client tree to transfer server cache
- Query keys must be serializable - Arrays of strings/numbers only
staleTimeon prefetched queries - Prevent immediate refetch on mount- Never use
queryClientin Client Components directly - Use hooks
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday First seen · 95 lines · 35 tokens per session scan A 0eaed5e9c83e
nextjs-tanstack-query is a skill published in the GitHub repository fusengine/agents (25 stars, last pushed 1mo ago), licensed MIT. It adds 35 tokens to every session and 862 once invoked, about $0.0002 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 2026-09-03.
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