mailchimp_merge_fields_create
Add a custom merge field to a Mailchimp audience to collect extra subscriber data. Define tag, name, type, and formatting options.
Instructions
Create a new merge field (custom field) for a list
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"list_id": "<list_id>",
"tag": "<tag>",
"name": "<name>",
"type": "<type>"
},
"name": "mailchimp_merge_fields_create"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| tag | Yes | Merge tag in uppercase (e.g., FNAME, LNAME, PHONE). Must be unique per list. | |
| name | Yes | Display name for the field | |
| type | Yes | Field type | |
| public | No | Whether the field is visible on the signup form | |
| list_id | Yes | List/audience ID | |
| options | No | Field-type-specific options | |
| required | No | Whether the field is required | |
| help_text | No | Descriptive text shown on signup forms | |
| default_value | No | Default value if left blank | |
| display_order | No | Order in which to display field on forms |