# create

URL: /business/nouns/setting/create · Id: `verb:Setting.create` · Call: `await $.Setting.create({ … })` (SDK) or the `do` tool at `https://api.sb/mcp`. Inputs says what to pass, Outputs what returns, When it waits who approves.

> Creates a Setting.

Create makes a new [Setting](/business/nouns/setting) from the inputs below. It is inherited: every [Noun](/business/nouns/noun) has `get`, `list`, `create`, `update` and `delete`.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `key` | `string` | Yes | The name of the choice. |
| `value` | `json` | Yes | The chosen value. |
| `locked` | `boolean` | No | True when no holder below may override it. |
| `thing` | [Thing](/business/nouns/thing) | No | The Thing whose choice a Setting holds; everything below it inherits the value unless it sets its own. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `setting` | [Setting](/business/nouns/setting) | Yes | The Setting. |

## Effects
- Emits `Setting.created`.
- Two-way: `try`, `send`, `do`.

## Refuses when
| Check | Error | Fix | Then call |
| --- | --- | --- | --- |
| The key is valid, but its scopes do not allow this operation. | [`forbidden`](/code/api/errors/forbidden) | Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them. | [Setting.create](/business/nouns/setting/create) |

## When it waits
| Gate | Default |
| --- | --- |
| Decision class | Low: two-way, nothing at stake |
| [Delay window](/systems/trust-and-governance/controls/one-way-windows) | None: it runs once review passes. |
| Limit | The call [Limit](/business/nouns/limit) of the [Permission](/business/nouns/permission) it runs under. |
| Over the Limit | It waits `pending` for an [Approval](/business/nouns/approval) from the [Founder](/agents/founding/founder). Approved, it runs; refused, it ends `refused` with [`limit-exceeded`](/code/api/errors/limit-exceeded); unanswered by its deadline, it ends `canceled`. |

## Example

**Ask**

```text
Add a setting to QuietCopy.
```

**API**

```bash
curl -X POST https://api.sb/quietcopy.com/settings \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"key":"Example key","value":{}}'
```

```json
{
  "api": "https://api.sb/quietcopy.com",
  "setting": {
    "$id": "https://api.sb/quietcopy.com/settings/setting_1",
    "$type": "Setting",
    "key": "Example key",
    "value": {}
  },
  "action": {
    "$id": "https://api.sb/quietcopy.com/actions/action_1",
    "operation": "Setting.create",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/quietcopy.com/actions/action_1"
  }
}
```

**SDK**

```ts
import { $ } from 'startup-builder'

const setting = await $.Setting.create({ key: 'Example key', value: {} })
```

**CLI**

```bash
npx startup-builder do Setting.create --json '{"key":"Example key","value":{}}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Setting.create({ key: 'Example key', value: {} })"
  }
}
```