›_ Claude Code Issues
Claude Code Issues / #19273

[Claude in Chrome] CSP blocks scripts, connection fails

Resolved 💬 3 comments Opened Jan 19, 2026 by asmartprivate 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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