setup-guides
Widget CSP Guide for AI Chat Installations
Fix CSP issues when installing an AI chat widget, including script-src, frame-src, connect-src, and strict app frameworks.
March 7, 2026 · by Chatrance Team
Widget CSP Guide for AI Chat Installations
One of the most common reasons a chat widget “does not work” on a modern site has nothing to do with the widget itself. The real issue is content security policy.
This matters enough that it should be part of the install documentation and the SEO content strategy.
The three directives teams usually need to check
The Chatrance integration notes identify the main ones clearly:
script-src
If the widget loader is not allowed here, the browser will refuse to execute the script.
frame-src
If the widget uses an internal iframe and frame-src is too strict, the embed fails even though the script loaded.
connect-src
If the site allows the script but not the API calls, the widget can render without actually functioning.
Why this breaks more often on modern frameworks
Strict frameworks and hosting setups often combine:
- React or framework-specific rendering behavior
- CSP headers from multiple sources
- middleware-level security policies
That is why AI chat installation guides should not stop at “paste this snippet.”
Next.js and strict app environments
The Chatrance field notes highlight a useful pattern: in some React Server Component setups, adding a script tag in the wrong place is not enough. The safer route is a client-side script injection or framework-specific loader pattern.
That makes this article valuable for developers and technical marketers alike.
The minimum thing the install guide should say
When the widget is blocked, check:
- is the script allowed?
- is the iframe allowed?
- is the API endpoint allowed?
- is another CSP source overriding the file you edited?
Why this belongs in blog content
This is a high-intent query because it appears after somebody already wants the product to work. Solving it quickly improves both activation and trust.