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chore: update claude-api skill [auto-sync] (#730)

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cc-skill-sync[bot]
2026-03-25 11:10:46 -04:00
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parent 887114fd09
commit 98669c11ca
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skills/claude-api/ruby/claude-api.md
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@@ -90,3 +90,24 @@ end
### Manual Loop
See the [shared tool use concepts](../shared/tool-use-concepts.md) for the tool definition format and agentic loop pattern.
---
## Prompt Caching
`system_:` (trailing underscore — avoids shadowing `Kernel#system`) takes an array of text blocks; set `cache_control` on the last block. Plain hashes work via the `OrHash` type alias. For placement patterns and the silent-invalidator audit checklist, see `shared/prompt-caching.md`.
```ruby
message = client.messages.create(
model: :"claude-opus-4-6",
max_tokens: 16000,
system_: [
{ type: "text", text: long_system_prompt, cache_control: { type: "ephemeral" } }
],
messages: [{ role: "user", content: "Summarize the key points" }]
)
```
For 1-hour TTL: `cache_control: { type: "ephemeral", ttl: "1h" }`. There's also a top-level `cache_control:` on `messages.create` that auto-places on the last cacheable block.
Verify hits via `message.usage.cache_creation_input_tokens` / `message.usage.cache_read_input_tokens`.