> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# setValidation

> Enable or disable verb schema validation at runtime.

[ref-addverb]: /docs/server-sdks/reference/typescript/agents/swml-builder/add-verb

Toggle verb schema validation at runtime. When validation is enabled (the
default), [`addVerb()`][ref-addverb] validates each verb's config against the
schema and throws if it fails. Disable validation for performance-sensitive
call paths or when constructing verbs with custom schemas not known to the
built-in schema utilities.

> **Note**
>
> Matches the Python `schema_validation` constructor parameter on
> `AgentBase`. For SWML service validation at construct time, pass
> `schemaValidation: false` to the `SwmlBuilder` constructor via
> `SwmlBuilderOptions`.

## **Parameters**

**`enabled`** `boolean` — required

`true` to enable schema validation on subsequent `addVerb()` calls, `false`
to disable.

---

## **Returns**

`void`

## **Example**

```typescript {8}
import { SwmlBuilder } from '@signalwire/sdk';

const builder = new SwmlBuilder();

// Validation on (default) — throws on invalid verb
builder.answer();

// Disable validation for a hot path
builder.setValidation(false);
builder.addVerb('custom_verb', { unusual: 'payload' });
```

> Enable or disable verb schema validation at runtime.