Returns the SMS templates you can send from, including Bird's built-in templates. Filter by scope, category, or language; the catalogue is small and returned in full, so this list is not paginated. To read one template's variables before sending with it, use [Get an SMS template](/docs/api/reference/get-sms-template). Keep only templates of this scope: `system` for Bird's built-in templates, `workspace` for templates authored in your workspace. Omit for all. Workspace-authored SMS templates are not available yet, so `workspace` currently matches nothing. Possible values: `system`, `workspace` Keep only templates whose `category` matches. Omit for all categories. Possible values: `transactional`, `marketing`, `authentication`, `service` Keep only templates available in this language, as a BCP-47 tag. Matches the template's `available_languages` entries exactly, with no fallback. The templates available to your workspace. The catalogue is small and returned in full; this list is not paginated. Unique identifier for the template. The template's stable handle. Pass it (or the id) as the template reference when sending. Human-readable description of what the template is for. Whether the template is a built-in Bird template (`system`) or one your workspace authored (`workspace`). Possible values: `system`, `workspace` Content classification applied to messages sent from this template. The template body in its default language, shown for preview. Variable placeholders appear inline (for example `{{ code }}`). The typed slots this template fills in from the values you supply when sending. The parameters key this slot is filled with. The value type this slot accepts. Open enum — treat any unrecognized value as a future type rather than an error. SMS templates use the typed slots (`code`, `amount`, …); email templates use `text`. Possible values (may grow over time): `code`, `ttl`, `count`, `ref`, `date`, `date_time`, `amount`, `currency`, `text` Whether the slot must be supplied when sending. Advisory for email templates, where a missing value renders as empty rather than rejecting the send. A human-readable description of the accepted values. The languages this template is available in, as BCP-47 tags. The template's lifecycle state. `active` means the template can be sent; every built-in Bird template is `active`. `draft` (being edited), `pending` (submitted for review), `approved` (passed review), and `rejected` (failed review) describe a workspace-authored template's authoring lifecycle; workspace-authored SMS templates are not available yet, so today every template is `active`. Possible values: `active`, `draft`, `pending`, `approved`, `rejected` The current editable draft version. Always null today: SMS templates are not yet versioned; present for parity with email templates. The currently published version, or null if the template has never been published. Always null today: SMS templates are not yet versioned; present for parity with email templates. The draft's revision counter. Always null today: SMS templates are not yet versioned; present for parity with email templates. When the template was created. Null for built-in templates. When the template was last updated. Null for built-in templates.