---
title: "Changes to Retrieve Message Batch results"
method: GET
path: "/v1/messages/batches/{message_batch_id}/results"
---

# Changes to Retrieve Message Batch results

`GET /v1/messages/batches/{message_batch_id}/results`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 20 of 68 revisions.

- **2026-09-01** `d1d189d791d1` — 1 info
- **2026-08-19** `67ee007cda1c` — 2 info
- **2026-08-06** `538e9bd0db77` — 1 info
- **2026-07-24** `a97790bd7f18` — 2 info
- **2026-07-23** `d7893c708340` — 1 warning
- **2026-07-21** `97200025c28e` — 1 warning
- **2026-07-01** `9c991bee394d` — 1 info
- **2026-06-30** `7caa9a75ddbc` — 1 info
- **2026-06-24** `82c21eb736c8` — 1 warning
- **2026-06-18** `063bcb9d6cf9` — 1 info
- **2026-06-09** `996eb28b2ab6` — 1 warning
- **2026-06-09** `00259327305f` — 1 warning, 2 info
- **2026-06-06** `546c704d347b` — 2 info
- **2026-05-28** `f9d488f9290d` — 1 warning, 2 info
- **2026-04-16** `e0696f59ae07` — 2 info
- **2026-04-08** `69486316563e` — 2 info
- **2026-04-01** `efe26b096126` — 1 info
- **2026-03-16** `7fce94a3c9f7` — 2 info
- **2026-02-17** `6924f88807cb` — 1 breaking
- **2026-02-17** `53a0f3638030` — 2 breaking, 7 warning, 8 info

## Changes

- **2026-09-01** `d1d189d791d1` — 1 info
  - added `subschema #2, subschema #3` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-08-19** `67ee007cda1c` — 2 info
  - added the optional property `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #4: ResponseToolUseBlock]/toolset_name` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/container/anyOf[subschema #1: Container]/skills` to the response with the `200` status
- **2026-08-06** `538e9bd0db77` — 1 info
  - removed `subschema #17, subschema #18` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-07-24** `a97790bd7f18` — 2 info
  - added `subschema #5, subschema #6, subschema #7, subschema #9, subschema #13, subschema #14, subschema #17, subschema #18` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #5, subschema #6, subschema #8, subschema #12, subschema #13, subschema #16, subschema #17` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-07-23** `d7893c708340` — 1 warning
  - added the new `model_context_window_exceeded` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/stop_reason/anyOf[#/components/schemas/StopReason]/` response property for the response status `200`
- **2026-07-21** `97200025c28e` — 1 warning
  - added the new `general_harms` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1: RefusalCategory]/` response property for the response status `200`
- **2026-07-01** `9c991bee394d` — 1 info
  - removed the `military_weapons` enum value from the `result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1: RefusalCategory]/` response property for the response status `200`
- **2026-06-30** `7caa9a75ddbc` — 1 info
  - added `subschema #2` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-06-24** `82c21eb736c8` — 1 warning
  - added the new `military_weapons` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1: RefusalCategory]/` response property for the response status `200`
- **2026-06-18** `063bcb9d6cf9` — 1 info
  - removed `subschema #17, subschema #18, subschema #19, subschema #20, subschema #21` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-06-09** `996eb28b2ab6` — 1 warning
  - added the new `frontier_llm` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1]/` response property for the response status `200`
- **2026-06-09** `00259327305f` — 1 warning, 2 info
  - added the new `reasoning_extraction` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1]/` response property for the response status `200`
  - added `subschema #2, subschema #3, subschema #6` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #4` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-06-06** `546c704d347b` — 2 info
  - added `subschema #13, subschema #14` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #13, subschema #14` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-05-28** `f9d488f9290d` — 1 warning, 2 info
  - added the new `url_not_in_prior_context` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #7: ResponseWebFetchToolResultBlock]/content/anyOf[subschema #1: ResponseWebFetchToolResultError]/error_code` response property for the response status `200`
  - added `subschema #2` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/usage/output_tokens_details` to the response with the `200` status
- **2026-04-16** `e0696f59ae07` — 2 info
  - added `subschema #2, subschema #14, subschema #15, subschema #16, subschema #17` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #13, subschema #14, subschema #15, subschema #16` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-04-08** `69486316563e` — 2 info
  - added `subschema #2, subschema #3` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #2` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-04-01** `efe26b096126` — 1 info
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/stop_details` to the response with the `200` status
- **2026-03-16** `7fce94a3c9f7` — 2 info
  - added `subschema #3, subschema #4, subschema #5, subschema #8, subschema #9, subschema #10, subschema #11, subschema #12, subschema #13, subschema #16` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - removed `subschema #3, subschema #6, subschema #7, subschema #8, subschema #9, subschema #10, subschema #11, subschema #14, subschema #15, subschema #16, subschema #17, subschema #18, subschema #19, subschema #20, subschema #21, subschema #22, subschema #23` from the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
- **2026-02-17** `6924f88807cb` — 1 breaking
  - removed the required property `result/oneOf[subschema #1: SucceededResult]/message/usage/speed` from the response with the `200` status
- **2026-02-17** `53a0f3638030` — 2 breaking, 7 warning, 8 info
  - the `name` response property const value `web_search` was removed for the status `200`
  - added `#/components/schemas/ResponseWebFetchToolResultBlock, #/components/schemas/ResponseCodeExecutionToolResultBlock, #/components/schemas/ResponseBashCodeExecutionToolResultBlock, #/components/schemas/ResponseTextEditorCodeExecutionToolResultBlock, #/components/schemas/ResponseToolSearchToolResultBlock, #/components/schemas/ResponseContainerUploadBlock` to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/` response property `oneOf` list for the response status `200`
  - added the new `bash_code_execution` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `code_execution` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `text_editor_code_execution` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `tool_search_tool_bm25` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `tool_search_tool_regex` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `web_fetch` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added the new `web_search` enum value to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/name` response property for the response status `200`
  - added `subschema #3` to the `result/oneOf[subschema #1: SucceededResult]/message/model` response property `anyOf` list for the response status `200`
  - added `bash_code_execution_tool_result, code_execution_tool_result, container_upload, text_editor_code_execution_tool_result, tool_search_tool_result, web_fetch_tool_result` discriminator mapping keys to the `result/oneOf[subschema #1: SucceededResult]/message/content/items/` response property for the response status `200`
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/container` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #4: ResponseToolUseBlock]/caller` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #5: ResponseServerToolUseBlock]/caller` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #6: ResponseWebSearchToolResultBlock]/caller` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/usage/server_tool_use/anyOf[subschema #1: ServerToolUsage]/web_fetch_requests` to the response with the `200` status
  - added the required property `result/oneOf[subschema #1: SucceededResult]/message/usage/speed` to the response with the `200` status

---

[Operation](https://skmtc.dev/anthropics/apis/anthropic-api/docs/v1/messages/batches/:message_batch_id/results/get.md) · [API](https://skmtc.dev/anthropics/apis/anthropic-api.md) · [Page](https://skmtc.dev/anthropics/apis/anthropic-api/changes/v1/messages/batches/:message_batch_id/results/get)