Skip to main content

Extension SDK Public API Blog

Developer Portal

Home
Overview
API Reference
Overview
Guides
Instructions
MCP
Postman Collections
SDKs
Breaking API Changes
API Domains

API Domains
Sample Definitions
Schemas
ContactId

ContactId

stringContactId (string)

Example: CID_012345678901234

ContactId
"CID_012345678901234"

Documentation

Extension SDK
Public API

Community

Developer Portal
Community Board
Newsletter Signup

More

Blog
Qualtrics Marketplace

Copyright © 2026 Qualtrics, LLC. All rights reserved.