List Agent Versions changedapi/beta/agents/versions/list
Nearest release: v2.1.281, published an hour before 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+10added
Lines−2removed
From line
35
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits11to this page, all time
The whole hunk
from line 35, old and new numbered
/
from line 35
3535
3636 - `string`
3737
38 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 43 more`
38 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
3939
4040 - `"message-batches-2024-09-24"`
4141
from line 129
129129
130130 - `"compact-2026-09-04"`
131131
132 - `"inline-tools-2026-09-15"`
133
134 - `"mcp-client-2026-09-15"`
135
132136- `"anthropic-workspace-id": optional string`
133137
134138 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 183
179183
180184 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
181185
182 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
186 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
183187
184188 The model that will power your agent.
185189
186190 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
191
192 - `"claude-opus-5-5"`
193
194 Powerful intelligence for coding, knowledge work, and long-running agents
187195
188196 - `"claude-fable-5-1"`
189197
No line in this hunk matches that.