Reference / MCP tool reference
Reference
List field sets
list_field_sets: Lists the field sets an order can deliver, such as standard or standard_telephone, with their exact columns.
Lists the field sets an order can deliver, such as standard or standard_telephone, with their exact columns. Every field set costs 1 credit a record, with no telephone, download or API surcharge. Use it to pick the field_set for quote_order; it is free and needs no account. Lawful basis is UK GDPR Article 6(1)(f) legitimate interests; email audiences include corporate subscribers only by default (PECR), so sole traders and ordinary partnerships are left out unless the toggle is changed.
| Property | Value |
|---|---|
| Tool name | list_field_sets |
| Position in tools/list | 12 of 22 |
| Cost | Free |
| Scope | None. Works without an account. |
| Annotations | readOnlyHint true, destructiveHint false, idempotentHint true, openWorldHint false |
| Kind | Read only; idempotent, not destructive, closed world |
| REST equivalent | GET /v1/field-sets |
Input
The schema sets additionalProperties to false, so a member that is not listed is refused.
| Member | Type | Required | Description |
|---|---|---|---|
limit | integer (1 to 100) | no | Items per page, 1 to 100. Default 25. Default 25. |
cursor | string | no | An opaque cursor from next_cursor. Pass it back unchanged. |
Example call
The params of a tools/call request:
{
"name": "list_field_sets",
"arguments": {}
}Output
The result carries structuredContent that matches this schema, and one line of text that leads with the number.
| Member | Type | Always present | Description |
|---|---|---|---|
data | array of FieldSet | yes | |
data[].id | string | yes | Such as standard, standard_telephone or full. |
data[].name | string | yes | |
data[].description | string | yes | |
data[].credits_per_record | number (0 or more) | yes | Every field set costs 1 credit a record. |
data[].columns | array of object | yes | |
has_more | boolean | yes | Whether another page follows. |
next_cursor | string or null | yes | Pass as cursor to fetch the next page; null on the last page. |
Errors
A failed call returns isError true. The text content leads with the sentence a person acts on, then the whole problem as JSON, with code, detail, next_step and did_you_mean. A 401 and a step-up 403 are answered at HTTP level so the client can start authorisation. See Errors.