capabilities.work

Create a contact custom field

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Create a contact custom field

with Close
Works with AI assistants

Use Close: its Close Custom Fields.contact API lets you create a contact custom field in a single step (POST /custom_field/contact/). Close 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 add a new custom field to contacts?
  • Can a contact field accept multiple values?
Say it to your AI assistant
  • Create a contact custom field called LinkedIn URL.
  • Add a choices field to contacts for preferred language.
For your developer

POST /custom_field/contact/ in Close Custom Fields.contact API. Full spec on APIs.io.