# enroll

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

> Enroll adds a Contact to a Sequence, which sends its steps until the Contact replies or exits.

Enroll adds a [Contact](/business/nouns/contact) to a [Sequence](/business/nouns/sequence), which sends its steps until the Contact replies or exits.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `contact` | [Contact](/business/nouns/contact) | Yes | The Contact to enroll. |
| `sequence` | [Sequence](/business/nouns/sequence) | Yes | The Sequence to run. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `contact` | [Contact](/business/nouns/contact) | Yes | The enrolled Contact. |
| `enrollment` | [Enrollment](/business/nouns/enrollment) | Yes | The Enrollment that records this Contact’s run through the Sequence. |

## Effects
- Emits [`Contact.enrolled`](/business/events/Contact.enrolled).
- Performed by the [Prospector](/agents/sales/prospector).
- Refuses a suppressed Contact or one with no consent for the Sequence’s purpose.

## 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. | [Contact.enroll](/business/nouns/contact/enroll) |
| 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. | [Contact.enroll](/business/nouns/contact/enroll) |
| A suppressed Contact or one with no consent for the Sequence’s purpose | [`refused`](/code/api/errors/refused) | Clear what the check names, then call it again. | [Contact.enroll](/business/nouns/contact/enroll) |

## 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
Enroll the contact Malik Owens with a sequence.
```

**API**

```bash
curl -X POST https://api.sb/tutorloop.com/contacts/contact_1/enroll \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"sequence":"sequence_1"}'
```

```json
{
  "api": "https://api.sb/tutorloop.com",
  "contact": {
    "$id": "https://api.sb/tutorloop.com/contacts/contact_1",
    "$type": "Contact",
    "email": "malik@tutorloop.com",
    "phone": "Example phone"
  },
  "enrollment": {
    "$id": "https://api.sb/tutorloop.com/enrollments/enrollment_1",
    "$type": "Enrollment",
    "status": "active",
    "step": "Example step"
  },
  "action": {
    "$id": "https://api.sb/tutorloop.com/actions/action_1",
    "operation": "Contact.enroll",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/tutorloop.com/actions/action_1"
  }
}
```

**SDK**

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

const { contact, enrollment } = await $.Contact.enroll({ contact: 'contact_1', sequence: 'sequence_1' })
```

**CLI**

```bash
npx startup-builder do Contact.enroll --json '{"contact":"contact_1","sequence":"sequence_1"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Contact.enroll({ contact: 'contact_1', sequence: 'sequence_1' })"
  }
}
```