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Update claude-api skill: per-SDK doc split, code_execution_20260521, platform-availability, onboarding streamline (#1363)

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Lance Martin
2026-06-27 09:07:56 -07:00
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parent 5754626092
commit 35414756ca
46 changed files with 2490 additions and 1635 deletions
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skills/claude-api/shared/prompt-caching.md
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@@ -64,7 +64,7 @@ Many requests share a large fixed preamble (few-shot examples, retrieved docs, i
### Mid-conversation system messages
**Beta, model-gated.** When an operator instruction arrives mid-conversation — a mode switch, updated context, dynamically injected state — send it as `{"role": "system", "content": "..."}` appended to `messages[]`, rather than editing top-level `system`. Editing top-level `system` changes the prefix ahead of the entire conversation history, so every cached turn is re-processed uncached; a `role: "system"` message sits after the history and leaves the cached prefix intact.
**Claude Opus 4.8 only; no beta header.** When an operator instruction arrives mid-conversation — a mode switch, updated context, dynamically injected state — send it as `{"role": "system", "content": "..."}` appended to `messages[]`, rather than editing top-level `system`. Editing top-level `system` changes the prefix ahead of the entire conversation history, so every cached turn is re-processed uncached; a `role: "system"` message sits after the history and leaves the cached prefix intact.
```json
// Top-level system stays byte-identical; new instruction goes after the cached history
@@ -78,7 +78,7 @@ Many requests share a large fixed preamble (few-shot examples, retrieved docs, i
This is also the prompt-injection-safe replacement for embedding operator instructions as text inside a user turn (the `<system-reminder>` pattern): both have the same caching profile, but `role: "system"` is the non-spoofable operator channel, whereas text inside user/tool content can be forged by anything that writes to user-visible input.
Requires `anthropic-beta: mid-conversation-system-2026-04-07`. Must follow a `role: "user"` message (or an assistant message ending in a server tool result); cannot be `messages[0]` — use top-level `system` for the initial prompt. Content is text-only. Model-gated — unsupported models return a 400 (`BadRequestError`: `role 'system' is not supported on this model`); catch that error and fall back to putting the instruction in a user-turn `<system-reminder>` block.
Available on Claude Opus 4.8; no beta header is required. Must follow a `role: "user"` message (or an `assistant` message ending in server-tool use), and must be either the last entry in `messages` or be followed by an `assistant` turn; cannot be `messages[0]` — use top-level `system` for the initial prompt. Content is text-only. Unsupported models return a 400 (`BadRequestError`: `role 'system' is not supported on this model`); catch that error and fall back to putting the instruction in a user-turn `<system-reminder>` block.
### Prompts that change from the beginning every time