Create a Message Batch

Send a batch of Message creation requests.

The Message Batches API can be used to process multiple Messages API requests at once. Once a Message Batch is created, it begins processing immediately. Batches can take up to 24 hours to complete.

Learn more about the Message Batches API in our user guide

post/v1/messages/batches

Headers

anthropic-versionstring

The version of the Claude API you want to use.

Read more about versioning and our version history here.

The version of the Claude API you want to use.

Read more about versioning and our version history here.

anthropic-user-profile-idstring

The user profile ID to attribute the requests in this batch to. Use when acting on behalf of a party other than your organization. Requires the user-profiles beta header. Applies to every request in the batch; an individual request whose user_profile_id body field conflicts with this header is errored.

Request body

Example request

{
  "requests": [
    {
      "custom_id": "my-custom-id-1",
      "params": {
        "max_tokens": 1024,
        "messages": [
          {
            "content": "Hello, world",
            "role": "user"
          }
        ],
        "model": "claude-opus-5"
      }
    }
  ]
}

Response

Successful Response

archived_atstring date-time nullable required

RFC 3339 datetime string representing the time at which the Message Batch was archived and its results became unavailable.

cancel_initiated_atstring date-time nullable required

RFC 3339 datetime string representing the time at which cancellation was initiated for the Message Batch. Specified only if cancellation was initiated.

created_atstring date-time required

RFC 3339 datetime string representing the time at which the Message Batch was created.

ended_atstring date-time nullable required

RFC 3339 datetime string representing the time at which processing for the Message Batch ended. Specified only once processing ends.

Processing ends when every request in a Message Batch has either succeeded, errored, canceled, or expired.

expires_atstring date-time required

RFC 3339 datetime string representing the time at which the Message Batch will expire and end processing, which is 24 hours after creation.

idstring required

Unique object identifier.

The format and length of IDs may change over time.

processing_status'in_progress' | 'canceling' | 'ended' required

Processing status of the Message Batch.

results_urlstring nullable required

URL to a .jsonl file containing the results of the Message Batch requests. Specified only once processing ends.

Results in the file are not guaranteed to be in the same order as requests. Use the custom_id field to match results to requests.

type'message_batch' required

Object type.

For Message Batches, this is always "message_batch".

Example response

{
  "archived_at": "2024-08-20T18:37:24.100435Z",
  "cancel_initiated_at": "2024-08-20T18:37:24.100435Z",
  "created_at": "2024-08-20T18:37:24.100435Z",
  "ended_at": "2024-08-20T18:37:24.100435Z",
  "expires_at": "2024-08-20T18:37:24.100435Z",
  "id": "msgbatch_013Zva2CMHLNnXjNJJKqJ2EF",
  "processing_status": "in_progress",
  "request_counts": {
    "canceled": 10,
    "errored": 30,
    "expired": 10,
    "processing": 100,
    "succeeded": 50
  },
  "results_url": "https://api.anthropic.com/v1/messages/batches/msgbatch_013Zva2CMHLNnXjNJJKqJ2EF/results"
}

Changes

Changed in 23 of the 68 revisions of this API.123149

Sep 1, 2026d1d189d791d121See the full diff
- ●
  removed the request property requests/items/params/tools/items/oneOf[subschema #7: BrowserToolset_20260801]/allowed_callers
  request-property-removed
- ●
  removed the request property requests/items/params/tools/items/oneOf[subschema #9: ComputerToolset_20260801]/allowed_callers
  request-property-removed
- ○
  added subschema #2 subschema #3 to the requests/items/params/model request property anyOf list
  request-property-any-of-added
This revision also has 1 change that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog
Aug 19, 202667ee007cda1c27See the full diff
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/transformations
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/transformations
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/transformations
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #7: RequestToolUseBlock]/toolset_name
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/transformations
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/transformations
  new-optional-request-property
- ○
  added the new optional request property requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/toolset_name
  new-optional-request-property
- ○
  added ContainerParams to the requests/items/params/container request property anyOf list
  request-property-any-of-added
- ○
  added browser_state discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/ request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added file discriminator mapping keys to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property
  request-property-discriminator-mapping-added
- ○
  added BrowserToolset_20260801 ComputerToolset_20260801 to the requests/items/params/tools/items/ request property oneOf list
  request-property-one-of-added
- ○
  added FileDocumentSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source request property oneOf list
  request-property-one-of-added
- ○
  added FileDocumentSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileDocumentSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileImageSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileImageSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileImageSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileImageSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #2: RequestImageBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added FileImageSource to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #2: RequestImageBlock]/source request property oneOf list
  request-property-one-of-added
- ○
  added RequestBrowserStateBlock to the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/ request property oneOf list
  request-property-one-of-added
Aug 14, 2026e9d8152420c311See the full diff
- ▲
  removed RequestMidConvSystemBlock from the requests/items/params/messages/items/content/anyOf[subschema #2]/items/ request property oneOf list
  request-property-one-of-removed
- ○
  removed mid_conv_system discriminator mapping keys from the requests/items/params/messages/items/content/anyOf[subschema #2]/items/ request property
  request-property-discriminator-mapping-deleted
This revision also has 2 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog
Aug 13, 20266e9020ec2b4127See the full diff
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #11: RequestWebFetchToolResultBlock]/content/anyOf[subschema #2: RequestWebFetchResultBlock]/content/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #17: RequestMidConvSystemBlock]/content/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #17: RequestMidConvSystemBlock]/content/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #17: RequestMidConvSystemBlock]/content/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #3: RequestSearchResultBlock]/content/items/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/messages/items/content/anyOf[subschema #2]/items/oneOf[subschema #8: RequestToolResultBlock]/content/anyOf[subschema #2]/items/oneOf[subschema #4: RequestDocumentBlock]/source/oneOf[subschema #3: ContentBlockSource]/content/anyOf[subschema #2: content_block_source_content]/items/oneOf[subschema #1: RequestTextBlock]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/system/anyOf[subschema #2]/items/citations/anyOf[subschema #1]/items/oneOf[subschema #1: RequestCharLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/system/anyOf[subschema #2]/items/citations/anyOf[subschema #1]/items/oneOf[subschema #2: RequestPageLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
- ○
  the requests/items/params/system/anyOf[subschema #2]/items/citations/anyOf[subschema #1]/items/oneOf[subschema #3: RequestContentBlockLocationCitation]/document_title/anyOf[subschema #1]/ request property's maxLength was increased from 255 to 500
  request-property-max-length-increased
Aug 6, 2026538e9bd0db771See the full diff
- ▲
  removed subschema #17 subschema #18 from the requests/items/params/model request property anyOf list
  request-property-any-of-removed
Jul 24, 2026a97790bd7f1811See the full diff
- ▲
  removed subschema #5 subschema #6 subschema #8 subschema #12 subschema #13 subschema #16 subschema #17 from the requests/items/params/model request property anyOf list
  request-property-any-of-removed
- ○
  added subschema #5 subschema #6 subschema #7 subschema #9 subschema #13 subschema #14 subschema #17 subschema #18 to the requests/items/params/model request property anyOf list
  request-property-any-of-added
Jun 30, 20267caa9a75ddbc1See the full diff
- ○
  added subschema #2 to the requests/items/params/model request property anyOf list
  request-property-any-of-added
Jun 29, 20264465f98f96c11See the full diff
- ○
  added WebSearchTool_20260318 WebFetchTool_20260318 to the requests/items/params/tools/items/ request property oneOf list
  request-property-one-of-added
Jun 24, 202682c21eb736c81See the full diff
- ○
  added the new optional header request parameter anthropic-user-profile-id
  new-optional-request-parameter
Jun 18, 2026063bcb9d6cf9117See the full diff
- ▲
  removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the requests/items/params/model request property anyOf list
  request-property-any-of-removed
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #10: WebSearchTool_20250305 -> subschema #11: WebSearchTool_20250305]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #11: WebFetchTool_20250910 -> subschema #12: WebFetchTool_20250910]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #12: WebSearchTool_20260209 -> subschema #13: WebSearchTool_20260209]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #13: WebFetchTool_20260209 -> subschema #14: WebFetchTool_20260209]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #14: WebFetchTool_20260309 -> subschema #15: WebFetchTool_20260309]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #15: ToolSearchToolBM25_20251119 -> subschema #16: ToolSearchToolBM25_20251119]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #16: ToolSearchToolRegex_20251119 -> subschema #17: ToolSearchToolRegex_20251119]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #1: Tool]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #2: BashTool_20250124]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #3: CodeExecutionTool_20250522]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #4: CodeExecutionTool_20250825]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #5: CodeExecutionTool_20260120]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #6: MemoryTool_20250818 -> subschema #7: MemoryTool_20250818]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #7: TextEditor_20250124 -> subschema #8: TextEditor_20250124]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #8: TextEditor_20250429 -> subschema #9: TextEditor_20250429]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added the new code_execution_20260521 enum value to the request property requests/items/params/tools/items/oneOf[subschema #9: TextEditor_20250728 -> subschema #10: TextEditor_20250728]/allowed_callers/items/
  request-property-enum-value-added
- ○
  added CodeExecutionTool_20260521 to the requests/items/params/tools/items/ request property oneOf list
  request-property-one-of-added
This revision also has 1 change that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

Full history (23 revisions)