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nextjs-debug

nextjs-debug is a skill for Claude Code, Codex from wghust/stark-skills. It costs 180 tokens per session (2,679 once invoked), scanned C, original, no licence file.

A troubleshooting guide for Next.js applications, which are web projects built with the Next.js framework.

In plain words
What is it for?
Use it for issues such as failed starts, compilation errors, hydration mismatches, missing modules, server/client boundary errors, environment-variable problems, and port conflicts.
Why use it?
It helps identify the cause of startup, build, and browser errors from project files and error logs.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 5repo 5mo ago C scan 180 tokens no licence

Good fit Use it for issues such as failed starts, compilation errors, hydration mismatches, missing modules, server/client boundary errors, environment-variable problems, and port conflicts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wghust/stark-skills/nextjs-debug
View source ↗ wghust/stark-skills
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 wghust/stark-skills --skill nextjs-debug
Clone the repo
git clone --depth 1 https://github.com/wghust/stark-skills

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 nextjs-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/wghust/stark-skills/nextjs-debug/github.svg)](https://agentmods.dev/skills/wghust/stark-skills/nextjs-debug)
Your own site
<a href="https://agentmods.dev/skills/wghust/stark-skills/nextjs-debug"><img src="https://agentmods.dev/badge/skills/wghust/stark-skills/nextjs-debug/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-debug

Your own site · 80×15
<a href="https://agentmods.dev/skills/wghust/stark-skills/nextjs-debug"><img src="https://agentmods.dev/badge/skills/wghust/stark-skills/nextjs-debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 180 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,679 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 $0.00180 $0.02679
Opus 5.5 $0.00072 $0.01072
Sonnet 5.5 $0.00036 $0.00536
Haiku 4.5 $0.00018 $0.00268

Measured 2mo ago against content hash 634f0ed49852, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

nextjs-debug scanned grade C with 1 finding 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

4. **.next cache**: if user description contains "worked yesterday" / "no code changes" → prepend `rm -rf .next && <pm> run dev` as first fix step
skills/nextjs-debug/SKILL.md · 270 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

Files

What ships with it

1 file 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.

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 · 270 lines · 180 tokens per session scan C 634f0ed49852

Subscribe to this mod's changes

nextjs-debug is a skill published in the GitHub repository wghust/stark-skills (5 stars, last pushed 5mo ago), with no licence file. It adds 180 tokens to every session and 2,679 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Debugging
Related

nextjs-debug compared with skills from other repositories

nextjs-debug next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
nextjs-debugwghust/stark-skillsSkill55mo agononeC180Claude Code, Codex
systematic-debuggingopen-metadata/OpenMetadataSkill16kyesterdayApache-2.0A37Claude Code
log-error-digestzebbern/claude-code-guideSkill4.7k3d agoMITA71Claude Code, Codex
cwv-optimizeradobe/skillsSkill319yesterdayApache-2.0A112Claude Code
ci-fixersipyourdrink-ltd/bernsteinSkill1.2kyesterdayApache-2.0A15Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skillsSkill1.9k23d agoMITA36Claude Code
triaging-web-analytics-supportPostHog/posthogSkill41kyesterdaynoneA151Claude Code, Codex