# Function routes: update, delete

URL: /code/api/function/records-update · Id: `page:code/api/function/records-update`

> The Function Verbs update, delete as api.sb routes, with inputs, result, refusals and an example.

Reference for [Function](/business/nouns/function), one group of [Function routes](/code/api/function).

### Function.update
Changes the given properties of a Function. [Verb page](/business/nouns/function/update?interface=api).

```text
PATCH /{namespace}/functions/{id}
```

Path: `id`. Body, as JSON: the other inputs. Emits `Function.updated`.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Function. |
| `kind` | `string` | No | One of `code`, `generative`, `agentic`, or `human`. |
| `cascade` | `string[]` | No | Kinds tried in order when one declines, such as code, then a Human. |
| `instructions` | `text` | No | For a generative or agentic Function, what it does and how. |
| `model` | `string` | No | For a generative or agentic Function, the model it runs on. |
| `tools` | list of [Verb](/business/nouns/verb) | No | For an agentic Function, the Verbs it may call; Permissions and Limits apply to each. |
| `maxSteps` | `integer` | No | For an agentic Function, the most steps one Action may take. |
| `budget` | `money` | No | The most one Action may spend; the Mandate’s Limits apply as well. |
| `role` | [Role](/business/nouns/role) | No | For a human Function, the Role its Tasks go to. |
| `form` | `json` | No | For a human Function, the form; generated from the Verb’s inputs and outputs when absent. |
| `sla` | `string` | No | For a human Function, how long a Task may wait, as an ISO 8601 duration. |
| `escalateTo` | [Role](/business/nouns/role) | No | For a human Function, the Role a Task moves to when the service level passes. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `function` | [Function](/business/nouns/function) | Yes | The Function. |

**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. | None. |

**Example**

```bash
curl -X PATCH https://api.sb/leaseline.app/functions/function_6nvaxFYImd \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"kind":"code"}'
```

```json
{
  "api": "https://api.sb/leaseline.app",
  "function": {
    "$id": "https://api.sb/leaseline.app/functions/function_6nvaxFYImd",
    "$type": "Function",
    "kind": "code"
  },
  "action": {
    "$id": "https://api.sb/leaseline.app/actions/act_br07HsG8MG",
    "operation": "Function.update",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/actions/act_br07HsG8MG"
  }
}
```

### Function.delete
Deletes a Function: a soft delete that keeps its history, undone by `Thing.restore`. [Verb page](/business/nouns/function/delete?interface=api).

```text
DELETE /{namespace}/functions/{id}
```

Path: `id`. Emits `Function.deleted`.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Function. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `function` | [Function](/business/nouns/function) | Yes | The Function. |

**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. | None. |

**Example**

```bash
curl -X DELETE https://api.sb/leaseline.app/functions/function_6nvaxFYImd \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/leaseline.app",
  "function": {
    "$id": "https://api.sb/leaseline.app/functions/function_6nvaxFYImd",
    "$type": "Function",
    "kind": "code"
  },
  "action": {
    "$id": "https://api.sb/leaseline.app/actions/act_br07HsG8MG",
    "operation": "Function.delete",
    "status": "done"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/actions/act_br07HsG8MG"
  }
}
```