mv3-messaging - Chrome Extension MV3 Messaging Patterns
Provides messaging patterns between Service Workers, Content Scripts, and Extension Pages in Chrome Manifest V3 extensions.
Tags
Updated: 2026-10-03Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Send one-time messages
- Handle asynchronous responses
- Broadcast to matching tabs
- Manage long-lived ports
- Route message types
- Connect external extensions
- Connect native applications
- Log message activity
Inputs
- Message payloads
- Tab IDs
- URL patterns
- Extension IDs
- Native application names
Outputs
- Message responses
- Broadcast messages
- Long-lived ports
- Connection events
- Message logs
Requirements
- Chrome Manifest V3 extension
- Service Worker, Content Script, or Extension Page
- nativeMessaging permission for native applications