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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

One change

Messages

api/beta/messages

first seen The page's own history The capture it came from

Nearest release: v2.1.245, published 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.

api/beta/messages Changed · +6222 / -10384 lines

### Headers ### Body parameters #### Response (200) ### Headers ### Body parameters #### Response (200) ## Domain types ## Messages › Batches ### Create a Message Batch #### Headers #### Body parameters #### Returns #### Example ##### Response (200) ### Retrieve a Message Batch #### Path parameters #### Headers #### Returns #### Example ##### Response (200) ### List Message Batches #### Query parameters #### Headers #### Returns #### Example ##### Response (200) ### Cancel a Message Batch #### Path parameters #### Headers #### Returns #### Example ##### Response (200) ### Delete a Message Batch #### Path parameters #### Headers #### Returns #### Example ##### Response (200) ### Retrieve Message Batch results #### Path parameters #### Headers #### Returns #### Example ### Header Parameters ### Body Parameters #### Response ### Header Parameters ### Body Parameters #### Response ## Domain Types # Batches ## Create a Message Batch ### Header Parameters ### Body Parameters #### Response ## Retrieve a Message Batch ### Path Parameters ### Header Parameters #### Response ## List Message Batches ### Query Parameters ### Header Parameters #### Response ## Cancel a Message Batch ### Path Parameters ### Header Parameters #### Response ## Delete a Message Batch ### Path Parameters ### Header Parameters #### Response ## Retrieve Message Batch results ### Path Parameters ### Header Parameters ## Domain Types ### Beta Deleted Message Batch ### Beta Message Batch ### Beta Message Batch Canceled Result ### Beta Message Batch Errored Result ### Beta Message Batch Expired Result ### Beta Message Batch Individual Response ### Beta Message Batch Request Counts ### Beta Message Batch Result ### Beta Message Batch Succeeded Result

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