# drill

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

> Drill restores one Capability’s records into an isolated namespace and records whether the restore met both objectives.

Drill restores one [Capability](/business/nouns/capability)’s records into an isolated namespace and records whether the restore met both objectives.

## Inputs
| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `objective` | [Recovery Objective](/business/nouns/recovery-objective) | Yes | The Recovery Objective to prove. |

## Outputs
| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `objective` | [Recovery Objective](/business/nouns/recovery-objective) | Yes | The objective with its last drill result. |

## Effects
- Emits [`RecoveryObjective.drilled`](/business/events/RecoveryObjective.drilled).
- Performed by the [Reliability Engineer](/agents/engineering/reliability-engineer).
- Two-way: it runs at once, in the `try`, `send` and `do` modes.
- Opens an Incident when a restore misses its recovery point or recovery time.

## 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. | [RecoveryObjective.drill](/business/nouns/recovery-objective/drill) |

## 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
Drill the latest recovery objective.
```

**API**

```bash
curl -X POST https://api.sb/shiftnote.app/recovery-objectives/recovery_objective_1/drill \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/shiftnote.app",
  "objective": {
    "$id": "https://api.sb/shiftnote.app/recovery-objectives/recovery_objective_1",
    "$type": "RecoveryObjective",
    "recoveryPoint": "Example recovery point",
    "recoveryTime": "Example recovery time",
    "drillEvery": "Example drill every"
  },
  "action": {
    "$id": "https://api.sb/shiftnote.app/actions/action_1",
    "operation": "RecoveryObjective.drill",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/shiftnote.app/actions/action_1"
  }
}
```

**SDK**

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

const objective = await $.RecoveryObjective.drill({ objective: 'recovery_objective_1' })
```

**CLI**

```bash
npx startup-builder do RecoveryObjective.drill --json '{"objective":"recovery_objective_1"}'
```

**MCP**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.RecoveryObjective.drill({ objective: 'recovery_objective_1' })"
  }
}
```