# Play Mix programs

URL: /code/mcp/play-mix · Id: `page:code/mcp/play-mix`

> Every Play Mix Verb as an MCP do program, with its inputs, result, refusals and an example.

Reference for [Play Mix](/business/nouns/play-mix).

### PlayMix.get
Returns one Play Mix by id. [Verb page](/business/nouns/play-mix/get?interface=mcp).

```text
do: return await $.PlayMix.get(input)
```

Reads only: it emits no Event.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Play Mix. |
| `at` | `string` | No | A time or Version name: the record as it stood then. Unset: as it stands now. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `playMix` | [Play Mix](/business/nouns/play-mix) | Yes | The Play Mix. |

**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**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.PlayMix.get({ id: 'mix_TTNQqOh9uX' })"
  }
}
```

### PlayMix.list
Returns Play Mixes, newest first, one page at a time. [Verb page](/business/nouns/play-mix/list?interface=mcp).

```text
do: return await $.PlayMix.list(input)
```

Reads only: it emits no Event.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | `integer` | No | At most this many records, up to 100. The default is 20. |
| `after` | `string` | No | The cursor from the previous page. |
| `where` | `string` | No | A filter over the properties, such as `paidAt = null and total.amount > 500`. |
| `sort` | `string` | No | Properties to sort by, comma-separated; a leading minus sorts descending. |
| `total` | `boolean` | No | True adds the match count as `meta.total`, exact up to 10,000 matches and estimated above. |
| `facets` | `string` | No | Properties to count by value, comma-separated, returned as `meta.facets`. |
| `fields` | `string` | No | Properties to return on each record, comma-separated; `$id` and `$type` always return. |
| `include` | `string` | No | Related records to embed in place of their URLs, comma-separated. |
| `depth` | `integer` | No | How many levels of related records to embed. The default is 1. |
| `q` | `string` | No | Words to match across the text properties, ranked by relevance. |
| `match` | `string` | No | Ranks the search by `words`, or `meaning`; words is the default. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `playMixes` | list of [Play Mix](/business/nouns/play-mix) | Yes | One page of Play Mixes. |

**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**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.PlayMix.list({ limit: 20 })"
  }
}
```

### PlayMix.compile
Compile builds the next Play Mix from the Demand Budget, each Play’s ledger and last week’s Acquisitions, and records the diff. [Verb page](/business/nouns/play-mix/compile?interface=mcp).

```text
do: return await $.PlayMix.compile(input)
```

Emits [`PlayMix.compiled`](/business/events/PlayMix.compiled).

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `startup` | [Startup](/business/nouns/startup) | Yes | The Startup whose Play Mix is compiled. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `playMix` | [Play Mix](/business/nouns/play-mix) | Yes | The new version, or the current one when nothing moved. |

**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**

```json
{
  "name": "do",
  "arguments": {
    "code": "return await $.PlayMix.compile({ startup: 'startup_l3hr1EnUGY' })"
  }
}
```