Create a contact field
Contact Fields
Create a contact field
Creates a custom field definition ({ fieldName, fieldType: "string" | "number" | "date" | "bool" }). Returns 201 with the bare definition. (Contact upserts also auto-create unknown fields — explicit creation is for pinning the type up front.)
POST
Create a contact field
Authorizations
Send your Brew API key as Authorization: Bearer brew_xxx.
Headers
Optional idempotency key for safe retries. Reusing the same key with the same request body returns the original response for 24 hours.
Required string length:
1 - 100Body
application/json