How to Create a GPT

GPT Builder Changelog (What Changed & How to Update)

Each entry includes: what changed, impact, and exact update steps for your GPT (Instructions/Knowledge/Actions) and for this site.

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Note: This is a site-level changelog. For external product changes that could affect limits or features, we’ll summarize impacts without speculating; confirm details in the GPT builder before quoting numbers.

2025‑09‑27 — Major content expansion (7 pages)

Site SEO Knowledge Instructions Actions

Added foundational guides and templates to deepen topical coverage and internal links.

Impact

  • Improves topical depth and hub completeness → better E‑E‑A‑T signals.
  • Boosts internal link graph and FAQ/HowTo schema coverage.

What to update

  • Homepage nav + footer: add links to the new pages.
  • Update sitemap.xml with new URLs and dates.
  • Add cross‑links: Knowledge ↔ Templates, Actions ↔ Recipes, Instructions ↔ Prompt Library.

2025‑09‑27 — Safer SMTP & .htaccess

Site

Removed unsupported SetEnv lines from .htaccess (500 fix). Moved SMTP secrets to _private/config.php and blocked with Require all denied.

Impact

  • Site stability on shared hosting; fewer server errors.
  • Cleaner deploys; no env vars in web server config.

What to update

  • Ensure subscribe.php reads _private/config.php.
  • Keep folder perms: 755; files: 644. Confirm PHP ≥ 8.0.

How to add a new changelog entry




  

    
YYYY‑MM‑DD — Summary title

    

      Site
      Actions
      Knowledge
      Instructions
      SEO
    

  

  
Short description of what changed.

  

    

      
Impact

      
    
        
  • Impact item
    • 
      

    

    

      
What to update

      
    
        
  • Specific file/page and exact change
    •

FAQ

Will this list external platform changes?

We summarize potential impacts and link to authoritative docs, but avoid quoting numeric limits that may shift. Always verify inside the GPT builder before relying on a number.

How do I be notified of updates?

Add this page to your bookmarks and check the dates. Optionally add a lightweight RSS later.

Can I contribute?

Yes — email hello@howtocreateagpt.com with a concise summary and links.

What tags should I use?

Use: Site, Instructions, Knowledge, Actions, SEO. Keep it simple.