Create a Message changedapi/beta/messages/create
Nearest release: v2.1.306, published 2 hours 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+1added
Lines−1removed
From line
131
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits29to this page, all time
The whole hunk
from line 131, old and new numbered
/
This page is larger than the 256 KiB this site keeps, so one side of the diff below stops where the stored text does.
from line 131
131131
132132- `"anthropic-user-profile-id": optional string`
133133
134 The user profile ID to attribute this request to. Use when acting on behalf of a party other than your organization. Requires the `user-profiles` beta header.
134 The user profile ID to attribute this request to. Use when acting on behalf of a party other than your organization.
135135
136136- `"anthropic-workspace-id": optional string`
137137
from line 7158
71587158
71597159 This is how the tool will be called by the model and in `tool_use` blocks.
71607160
7161 - `allow
7161 - `allowed_callers: optional array of "direct" or
No line in this hunk matches that.