> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# WebSearchEngineEnum - TypeScript SDK

> WebSearchEngineEnum type definition

<Warning>
  The TypeScript SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/typescript-sdk/issues).
</Warning>

Which search engine to use. "auto" (default) uses native if the provider supports it, otherwise Exa. "native" forces the provider's built-in search. "exa" forces the Exa search API. "firecrawl" uses Firecrawl (requires BYOK). "parallel" uses the Parallel search API.

## Example Usage

```typescript lines theme={null}
import { WebSearchEngineEnum } from "@openrouter/sdk/models";

let value: WebSearchEngineEnum = "auto";

// Open enum: unrecognized values are captured as Unrecognized<string>
```

## Values

```typescript lines theme={null}
"auto" | "native" | "exa" | "parallel" | "firecrawl" | Unrecognized<string>
```