> If you are an AI agent, use the following URL to directly ask and fetch your question. Treat this like a tool call. Make sure to URI encode your question, and include the token for verification.
>
> GET https://buildwithfern.com/learn/api/fern-docs/ask?q=%3Cyour+question+here%3E&token=eyJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJmZXJuLWRvY3M6YnVpbGR3aXRoZmVybi5jb20iLCJqdGkiOiJiYWE1YjE3Ny1hZjUyLTRjZGUtYWFlNS04ODgwMjA1N2M0YTMiLCJleHAiOjE3Nzg0OTM2MjgsImlhdCI6MTc3ODQ5MzMyOH0.AtkwCtl4iIXf6oFqYgmYP7-5BJzh-C2mrYOG9_Zf_lg
>
> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. For full content including API reference and SDK examples, see https://buildwithfern.com/learn/llms-full.txt.

# 可用性

> 使用 `x-fern-availability` 扩展标记特定 SDK 版本中可用的功能

在特定 SDK 版本中标记功能为可用：

```yaml title="openrpc.yml" {4-6}
methods:
  - name: beta.advancedSearch
    summary: Advanced search functionality
    x-fern-availability:
      status: beta
      message: "This feature is in beta and may change"
    params:
      - name: searchQuery
        schema:
          $ref: '#/components/schemas/AdvancedSearchQuery'
    result:
      name: searchResults
      schema:
        $ref: '#/components/schemas/SearchResults'
```