Fix: Update prompt caching to use standard API endpoint

[jun229]

Problem

The prompt caching example in [contextual-embeddings/guide.ipynb] uses deprecated API syntax that causes errors:

# This fails with AttributeError: 'Beta' object has no attribute 'prompt_caching'
client.beta.prompt_caching.messages.create(...)

Solution

Updated to use the current standard API endpoint for prompt caching:

client.messages.create(
    ...,
    extra_headers={"anthropic-beta": "prompt-caching-2024-07-31"}
)

Changes Made

• Replaced client.beta.prompt_caching.messages.create() with client.messages.create()
• Kept the required extra_headers for prompt caching functionality

[PedramNavid]

Hi @jun229, thanks for contributing! You will also need to remove the extra_headers={"anthropic-beta": "prompt-caching-2024-07-31"} which as been deprecated. Would you be open to doing that and resubmitting? There are also some merge conflicts in this PR.

[PedramNavid]

hi @jun229 thanks for the PR. Looks like there are some conflicts before I can merge this one.

[jun229]

Hi @PedramNavid, all merge conflicts have been resolved, and the deprecated extra_headers have been removed.

The PR should now be ready for review. Thanks again for your time!

[nidhishgajjar]

Orb Code Review (powered by GLM 5.1 on Orb Cloud)

Straightforward removal of the deprecated anthropic-beta: prompt-caching-2024-07-31 header from the contextual embeddings guide.

Analysis

Prompt caching is now generally available, so the beta header is no longer needed. The removal is done in both places where the header was used, and the surrounding code structure is preserved correctly.

Summary

Clean removal of a deprecated beta header. No issues.

Assessment: approve