nextjs-hydration-debugging

nextjs-hydration-debugging is a cursor rule for Cursor from tanchaowen84/GameSiteTemplate. It costs 1,242 tokens per session, scanned A, original, no licence file.

A debugging guide for React hydration mismatches in Next.js and other server-rendered React frameworks. Hydration is the step where React attaches behavior in the browser to HTML first produced on the server.

In plain words
What is it for?
Use it to investigate and fix hydration mismatch errors in Next.js or similar server-rendered React applications.
Why use it?
It helps explain errors caused when the server's initial HTML differs from what React expects in the browser.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it to investigate and fix hydration mismatch errors in Next.js or similar server-rendered React applications.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging
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.

Clone the repo
git clone --depth 1 https://github.com/tanchaowen84/GameSiteTemplate

Made for: Cursor.

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 nextjs-hydration-debugging

README.md
[![agentmods](https://agentmods.dev/badge/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging/github.svg)](https://agentmods.dev/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging)
Your own site
<a href="https://agentmods.dev/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging"><img src="https://agentmods.dev/badge/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging/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 nextjs-hydration-debugging

Your own site · 80×15
<a href="https://agentmods.dev/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging"><img src="https://agentmods.dev/badge/rules/tanchaowen84/gamesitetemplate/nextjs-hydration-debugging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,242 This file is loaded in full into every session.
When invoked 1,242 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.01242 $0.01242
Opus 5.5 $0.00497 $0.00497
Sonnet 5.5 $0.00248 $0.00248
Haiku 4.5 $0.00124 $0.00124

Measured 2mo ago against content hash 694c324ea28f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nextjs-hydration-debugging 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 2mo 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.

.cursor/rules/nextjs-hydration-debugging.mdc · 72 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 72 lines · 1,242 tokens per session scan A 694c324ea28f

Subscribe to this mod's changes

nextjs-hydration-debugging is a cursor rule published in the GitHub repository tanchaowen84/GameSiteTemplate (9 stars, last pushed 1y ago), with no licence file. It adds 1,242 tokens to every session, about $0.0050 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 2026-08-31.