---
title: "tool si.read.registered"
description: "a register and a name: the row, or nothing."
section: reference
address: /reference/tools/si-read-registered
contract: 0476e35e6e275db5
---

# tool si.read.registered

a register and a name: the row, or nothing.

[figure: Over MCP, si.read.registered takes RegisterInput and returns a card whose body is RegisterAnswer.]

the row, or nothing. The call needs the read grant at the tenant rung.



| | |
|---|---|
| input | [RegisterInput](/concepts/registerinput) |
| result | a card whose body is [RegisterAnswer](/concepts/registeranswer) |
| read-only | yes |
| destructive | no |
| card address | `ui://scale-intelligence/cards/RegisterAnswer` |
| HTTP route | [`/v1/read/registered`](/reference/read/registered) |





| field | type | required | note |
|---|---|---|---|
| `register` | `text` | yes |  |
| `name` | `text` | no | is this name registered |