# get

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

> Returns one Period by id.

Get returns one [Period](/business/nouns/period) by id. It is inherited: every [Noun](/business/nouns/noun) has `get`, `list`, `create`, `update` and `delete`.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Period. |
| `at` | `string` | No | A time or Version name: the record as it stood then. Unset: as it stands now. |

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

## Effects
- Reads only: it emits no Event and changes nothing.
- Read: `try`, `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. | [Period.get](/business/nouns/period/get) |

## When it waits
Never: a read runs at once.

## Example

**Ask**

```text
Show me the latest period.
```

**API**

```bash
curl https://api.sb/ledgerlark.com/periods/period_1 \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/ledgerlark.com",
  "$type": "Period",
  "$id": "https://api.sb/ledgerlark.com/periods/period_1",
  "period": {
    "$id": "https://api.sb/ledgerlark.com/periods/period_1",
    "$type": "Period",
    "month": "2026-10-22",
    "status": "Open"
  },
  "links": {
    "self": "https://api.sb/ledgerlark.com/periods/period_1",
    "up": "https://api.sb/ledgerlark.com/periods"
  },
  "actions": {
    "close": "https://api.sb/ledgerlark.com/periods/period_1/close",
    "lock": "https://api.sb/ledgerlark.com/periods/period_1/lock",
    "recognize": "https://api.sb/ledgerlark.com/periods/period_1/recognize"
  }
}
```

**SDK**

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

const period = await $.Period.get({ id: 'period_1' })
```

**CLI**

```bash
npx startup-builder do Period.get --json '{"id":"period_1"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Period.get({ id: 'period_1' })"
  }
}
```