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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
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One change · api

Count tokens in a Message changed

api/beta/messages/count_tokens

Nearest release: v2.1.280, published 20 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+4added
Lines−0removed
From line 121 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits10to this page, all time

The whole hunk

from line 121, old and new numbered
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from line 121
121121 
122122- `"anthropic-workspace-id": optional string`
123123 
124 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
125 
126 Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.
127 
124128## Body parameters
125129 
126130- `messages: array of BetaMessageParam`