Details
Overview
Pages: 404 Error Page Skill is an open-source Agent Skill from the kostja94/marketing-skills collection (MIT). It teaches AI coding agents focused marketing / SEO workflows so they can produce production-ready guidance instead of generic advice.
Guides 404 error page design for UX, conversion recovery, and brand consistency.
Identify: 1. Site structure: Key pages to link (homepage, popular pages, search) 2. Brand tone: Friendly, professional, playful 3. Conversion goal: Recover lost visitors, drive to key pages
Official skill id: 404-page-generator. Source path: skills/pages/utility/404.
Key Features
- U: ser-friendly: Neutral message explaining the page wasn't found
- O: ptional 404 display: Can show "404" but avoid blaming the user
- E: mpathetic tone: Acknowledge the error gracefully; turn frustration into opportunity
- C: onsistent design: Same header, footer, colors as rest of site (brand-visual-generator)
- A: void confusion: Users should not think they've left your domain
- M: obile responsive: Test on all devices
How to Use
- Use a Skill-compatible agent such as Claude Code, Cursor, or Codex.
- Install from the terminal (Node.js required):
npx skills add https://github.com/kostja94/marketing-skills --skill 404
Or paste the install prompt from this tool page into your agent and ask it to install for you. 3. Restart / reload the agent so the new Skill is loaded. 4. Invoke the Skill with its slash commands or by asking the agent to run the workflow described in Overview / Key Features. 5. Review outputs before publishing — treat model-generated copy, images, and data as drafts.
Pricing
| Plan | Billing | Price | Notes |
|---|---|---|---|
| Open source | — | Free | MIT license; install via npx skills add |
| Full pack | — | Free | Optional: install the entire marketing-skills repo |
No paid tiers. Check the GitHub repository for license and updates.
Best For
Marketers, indie hackers, ecommerce / SaaS founders, and SEO operators who want agents to execute a specific marketing task with structured best practices.
Trigger context from the skill author: When the user wants to create, optimize, or audit 404 error pages. Also use when the user mentions "404 page," "404 error," "error page," "page not found," "broken link page," "404 design," "custom 404," "404 redirect," "404 page UX," or "404 recovery." For sitewide page planning, use website-structure.
FAQ
How do I install this skill?
npx skills add https://github.com/kostja94/marketing-skills --skill 404-page-generator
Or copy the skill folder into .cursor/skills/, .agents/skills/, or .claude/skills/.
Does this skill run code on my machine?
No. Skills in this collection are pure Markdown instructions for agents — no executable payloads.
Can I install only this skill instead of the full pack?
Yes. Prefer --skill 404-page-generator for a single task. Install 2–3 related skills per job rather than the entire library.
Where should I add project context?
Copy templates/project-context.md from the repo into .cursor/ or .claude/ and fill in product, audience, and brand details so outputs stay tailored.