---
title: "tool si.act.bind_buyer"
description: "the kind, an offering or a segment, the weight, the mode: the binding, and the preview of the kind's members."
section: reference
address: /reference/tools/si-act-bind_buyer
contract: 0476e35e6e275db5
---

# tool si.act.bind_buyer

the kind, an offering or a segment, the weight, the mode: the binding, and the preview of the kind's members.

[figure: Over MCP, si.act.bind_buyer takes BindBuyerInput and returns a card whose body is BindBuyerAnswer.]

the binding, and the preview of the kind's members. The call needs the act grant at the brand rung.



| | |
|---|---|
| input | [BindBuyerInput](/concepts/bindbuyerinput) |
| result | a card whose body is [BindBuyerAnswer](/concepts/bindbuyeranswer) |
| read-only | no |
| destructive | yes |
| card address | `ui://scale-intelligence/cards/BindBuyerAnswer` |
| HTTP route | [`/v1/act/bind_buyer`](/reference/act/bind_buyer) |





| field | type | required | note |
|---|---|---|---|
| `kind_of_buyer` | `id` | yes |  |
| `bindings` | [Binding](/concepts/binding) | yes |  |
| `ladder` | `text` | no | the ladder the kind climbs, by its name, where the binding changes it; the ladder must be kept and ready |