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Link a client user ID or custom identifiers to a user

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Link a client user ID or custom identifiers to a user

with Attentive · Customer Data Management
Works with AI assistants

Use Attentive: its Attentive Identity API lets you link a client user ID or custom identifiers to a user in a single step (POST /identity-resolution/user-identifiers). Attentive also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.

  • How do I connect my own customer ID to a subscriber's phone or email?
  • Can I associate a Shopify or Klaviyo ID with an existing user?
  • What other identifier must accompany a custom identifier when linking a user?
Say it to your AI assistant
  • Associate client user ID {clientUserId} with email {email}.
  • Link custom identifiers {customIdentifiers} to the user with phone {phone}.
  • Tie Shopify ID {shopifyId} to client user ID {clientUserId}.
For your developer

POST /identity-resolution/user-identifiers in Attentive Identity API. Full spec on APIs.io.