advisor-tool changedagents-and-tools/tool-use/advisor-tool
Nearest release: v2.1.314, published under an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+3added
Lines−3removed
From line
291
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits27to this page, all time
The whole hunk
from line 291, old and new numbered
/
from line 291
291291 ```
292292</CodeGroup>
293293
294The response `content` includes an `advisor_tool_result` block carrying the advisor’s guidance. With `claude-opus-5-5` as the advisor, as in this quick start, the block’s `content` field is an `advisor_redacted_result` variant (encrypted; the executor reads it server-side, but your client does not). To see the advice text directly in your response, use `claude-opus-4-8` as the advisor model instead, which returns the plaintext `advisor_result` variant. See [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants) for both shapes side by side and which advisor models return which, and [Model compatibility](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#model-compatibility) for the full list of valid pairs.
294The response `content` includes an `advisor_tool_result` block carrying the advisor’s guidance. With the newest Opus model as the advisor, as in this quick start, the block’s `content` field is an `advisor_redacted_result` variant (encrypted; the executor reads it server-side, but your client does not). To see the advice text directly in your response, use `claude-opus-4-8` as the advisor model instead, which returns the plaintext `advisor_result` variant. See [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants) for both shapes side by side and which advisor models return which, and [Model compatibility](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#model-compatibility) for the full list of valid pairs.
295295
296296## How it works
297297
from line 325
325325
326326### Successful advisor call
327327
328When the advisor is called, a `server_tool_use` block is followed by an `advisor_tool_result` block in the assistant’s content. The following example shows the plaintext `advisor_result` variant returned by a Claude Opus 4.8 advisor. The [Quick start](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#quick-start) uses Claude Opus 5.5, which returns the encrypted `advisor_redacted_result` variant instead; see [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants) for both shapes side by side.
328When the advisor is called, a `server_tool_use` block is followed by an `advisor_tool_result` block in the assistant’s content. The following example shows the plaintext `advisor_result` variant returned by a Claude Opus 4.8 advisor. The [Quick start](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#quick-start) uses the newest Opus model, which returns the encrypted `advisor_redacted_result` variant instead; see [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants) for both shapes side by side.
329329
330330```json
331331{
from line 437
437437
438438## Multi-turn conversations
439439
440Pass the full assistant content, including `advisor_tool_result` blocks, back to the API on subsequent turns. Round-trip the result blocks verbatim: with a Claude Opus 5.5 advisor the result block’s `content` is the encrypted `advisor_redacted_result` variant, and the server decrypts it and renders the advice into the executor’s prompt on the next turn (see [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants)). The mechanics are identical for any advisor model.
440Pass the full assistant content, including `advisor_tool_result` blocks, back to the API on subsequent turns. Round-trip the result blocks verbatim: with the newest Opus model as the advisor, as in this example, the result block’s `content` is the encrypted `advisor_redacted_result` variant, and the server decrypts it and renders the advice into the executor’s prompt on the next turn (see [Result variants](https://platform.claude.com/docs/en/agents-and-tools/tool-use/advisor-tool#result-variants)). The mechanics are identical for any advisor model.
441441
442442<CodeGroup exclude="shell">
443443 ```python Python
No line in this hunk matches that.