web_fetch not a valid tool type

[AdrianKrebs]

Using the latest 0.62.0 version that was supposed to add web_fetch to the SDK, I get the following error:
BadRequestError: 400 {"type":"error","error":{"type":"invalid_request_error","message":"tools.0: Input tag 'web_fetch_20250910' found using 'type' does not match any of the expected tags: 'bash_20250124', 'custom', 'text_editor_20250124', 'text_editor_20250429', 'text_editor_20250728', 'web_search_20250305'"},"request_id":"...."}

Reproducible with the snipped from the official docs https://docs.anthropic.com/en/docs/agents-and-tools/tool-use/web-fetch-tool

[johnboxall]

@AdrianKrebs – you must provide the betas param eg.

client.beta.messages({
  // ...
  tools: [{type: 'web_fetch_20250910', name: 'web_fetch'}],
  // Don't forget me!
  betas: ['web-fetch-2025-09-10']
})