# book

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

> Book schedules a Meeting with a Contact at a time both calendars hold free.

Book schedules a [Meeting](/business/nouns/meeting) with a [Contact](/business/nouns/contact) at a time both calendars hold free.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `contact` | [Contact](/business/nouns/contact) | Yes | Who to meet. |
| `at` | `datetime` | Yes | When. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `meeting` | [Meeting](/business/nouns/meeting) | Yes | The booked Meeting. |

## Effects
- Emits [`Meeting.booked`](/business/events/Meeting.booked).
- Performed by the [Sales Engineer](/agents/sales/sales-engineer).

## 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. | [Meeting.book](/business/nouns/meeting/book) |
| The record is not in a state that allows this Verb, so the call is refused. | [`refused`](/code/api/errors/refused) | Read the record, run the Verb that moves it to an allowed state, then retry. | [Meeting.book](/business/nouns/meeting/book) |

## 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
Book the latest meeting with a contact.
```

**API**

```bash
curl -X POST https://api.sb/kilnbakery.com/meetings/book \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"contact":"contact_1","at":"2026-10-22T12:00:00Z"}'
```

```json
{
  "api": "https://api.sb/kilnbakery.com",
  "meeting": {
    "$id": "https://api.sb/kilnbakery.com/meetings/meeting_1",
    "$type": "Meeting",
    "at": "2026-10-22T12:00:00Z"
  },
  "action": {
    "$id": "https://api.sb/kilnbakery.com/actions/action_1",
    "operation": "Meeting.book",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/kilnbakery.com/actions/action_1"
  }
}
```

**SDK**

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

const meeting = await $.Meeting.book({ contact: 'contact_1', at: '2026-10-22T12:00:00Z' })
```

**CLI**

```bash
npx startup-builder do Meeting.book --json '{"contact":"contact_1","at":"2026-10-22T12:00:00Z"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Meeting.book({ contact: 'contact_1', at: '2026-10-22T12:00:00Z' })"
  }
}
```

Guides that call it: [Qualify leads and book demos](/workflows/guides/qualify-leads-and-book-demos).