As a matter of fact, i think this is not a problem at all as Anthropic makes it extremely easy to cache stuff; you just set your preferred cache level on the last message, and Anthropic will automatically cache it under the hood. Every distinct message is another “cache” point, eg they first compute the hash of all messages, if not found, compute the hash of all messages - 1, etc.

It’s really a non problem.

From the FAQ:

You're right, and it's a fair question. Claude Code does handle prompt caching automatically for its own API calls — system prompts, tool definitions, and conversation history are cached out of the box. You don't need this plugin for that.

This plugin is for a different layer: when you build your own apps or agents with the Anthropic SDK. Raw SDK calls don't get automatic caching unless you place cache_control breakpoints yourself. This plugin does that automatically, plus gives you visibility into what's being cached, hit rates, and real savings — which Claude Code doesn't expose.

> Claude Code already handles prompt caching automatically for its own API calls

Claude Code is an app. The API layer is different.

When did people start thinking that the Claude Code app and the API are the same thing?

Are these just all confused vibe coders?

  Domain Name: prompt-caching.ai
  Updated Date: 2026-03-12T20:31:44Z
  Creation Date: 2026-03-12T20:27:35Z
  Registry Expiry Date: 2028-03-12T20:27:35Z