[Claude in Chrome] CSP blocks scripts, connection fails
Status Closed — duplicate
Reported on v2.1.12
Maintainer reply None cached
Activity 3 comments · opened Jan 19, 2026 · closed Jan 23, 2026
Description
Extension cannot establish MCP connection due to CSP errors.
## Errors (from sidepanel DevTools console)
- Inline script blocked by CSP directive 'script-src self'
- cdn.segment.com script blocked by CSP
- "Could not establish connection. Receiving end does not exist." in sidepanel-yURUk1gX.js and mcpPermissions-juDHLu3j.js
## Environment
- OS: Windows 10/11
- Chrome version: 144.0.7559.60
- Claude Code version: 2.1.12
Thank you in advance
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