# cancel

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

> Cancel ends one Contact’s run through a Sequence for good, with the reason it records as `exitReason`.

Cancel ends one [Contact](/business/nouns/contact)’s run through a [Sequence](/business/nouns/sequence) for good, with the reason it records as `exitReason`.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `enrollment` | [Enrollment](/business/nouns/enrollment) | Yes | The Enrollment to end. |
| `reason` | `string` | Yes | Why it ends. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `enrollment` | [Enrollment](/business/nouns/enrollment) | Yes | The Enrollment, now `exited`. |

## Effects
- Emits [`Enrollment.canceled`](/business/events/Enrollment.canceled).
- Performed by the [Prospector](/agents/sales/prospector).
- Two-way: it runs at once, in the `try`, `send` and `do` modes.

## 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. | [Enrollment.cancel](/business/nouns/enrollment/cancel) |

## 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
Cancel the latest enrollment.
```

**API**

```bash
curl -X POST https://api.sb/quietcopy.com/enrollments/enrollment_1/cancel \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"reason":"replied"}'
```

```json
{
  "api": "https://api.sb/quietcopy.com",
  "enrollment": {
    "$id": "https://api.sb/quietcopy.com/enrollments/enrollment_1",
    "$type": "Enrollment",
    "status": "active",
    "step": "Example step"
  },
  "action": {
    "$id": "https://api.sb/quietcopy.com/actions/action_1",
    "operation": "Enrollment.cancel",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/quietcopy.com/actions/action_1"
  }
}
```

**SDK**

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

const enrollment = await $.Enrollment.cancel({ enrollment: 'enrollment_1', reason: 'replied' })
```

**CLI**

```bash
npx startup-builder do Enrollment.cancel --json '{"enrollment":"enrollment_1","reason":"replied"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.Enrollment.cancel({ enrollment: 'enrollment_1', reason: 'replied' })"
  }
}
```