---
title: "Changes to Get transcript messages and events"
method: GET
path: "/transcripts/{dir}/{id}/messages-events"
---

# Changes to Get transcript messages and events

`GET /transcripts/{dir}/{id}/messages-events`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 39 of 54 revisions.

- **2026-11-03** `b799e9a81653`: 1 info
- **2026-10-27** `f854dcec6157`: 1 info
- **2026-10-19** `58b5f4bf69c1`: 1 info
- **2026-10-12** `37bc08055639`: 1 warning, 1 info
- **2026-10-09** `ec4d931a2331`: 2 info
- **2026-10-06** `1f5d5947c8ce`: 1 info
- **2026-10-05** `49e746ef77db`: 2 info
- **2026-09-30** `94cf3492cc34`: 19 info
- **2026-09-15** `211de6950b48`: 1 info
- **2026-09-13** `32639b1ac910`: 1 info
- **2026-09-02** `d355ae9ed598`: 1 info
- **2026-08-27** `1ff4ef91e5b1`: 1 breaking, 4 info
- **2026-08-18** `80dc9ada6cd6`: 5 warning
- **2026-07-30** `98c593efb87a`: 19 info
- **2026-07-13** `e506910d9041`: 1 info
- **2026-07-12** `c79b8e0c7c71`: 1 info
- **2026-06-18** `794e93ec2f5a`: 1 warning, 1 info
- **2026-06-12** `6524bc801d9f`: 1 info
- **2026-06-11** `2b475eed973f`: 2 info
- **2026-06-08** `ff9253d6abc6`: 1 warning
- **2026-06-07** `6c8df7e4afe7`: 5 info
- **2026-05-27** `2f4a5a21bc21`: 4 info
- **2026-05-21** `0c0a9d3aebd5`: 22 warning, 3 info
- **2026-05-14** `c5912d39952c`: 2 info
- **2026-05-12** `529267cc3270`: 1 info
- **2026-05-10** `8429fc89aef3`: 2 info
- **2026-05-05** `2d1a14ec3f86`: 2 breaking, 2 info
- **2026-05-04** `f982dad7cbc2`: 3 info
- **2026-04-27** `aad917125439`: 1 info
- **2026-04-24** `a9ee30d24343`: 2 info
- **2026-04-16** `ace9de4a8f80`: 2 warning
- **2026-04-07** `325804aabe5c`: 18 info
- **2026-04-03** `0fc41a5c1e02`: 25 breaking, 240 info
- **2026-04-02** `a072cd1fd97b`: 1 warning, 1 info
- **2026-04-01** `0fce351d5c13`: 1 info
- **2026-04-01** `af3651240779`: 1 info
- **2026-03-31** `aa4a640cbc6a`: 3 info
- **2026-03-20** `b52f37d083c2`: 1 info
- **2026-03-17** `d2a0b9f760ff`: 184 breaking, 23 warning, 30 info

## Changes

- **2026-11-03** `b799e9a81653`: 1 info
  - added `#/components/schemas/CommunicationEvent, #/components/schemas/SwarmEvent` to the `events/items/` response property `anyOf` list for the response status `200`
- **2026-10-27** `f854dcec6157`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/origin` to the response with the `200` status
- **2026-10-19** `58b5f4bf69c1`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/input_context_tokens` to the response with the `200` status
- **2026-10-12** `37bc08055639`: 1 warning, 1 info
  - added the new `proceed` enum value to the `events/items/anyOf[subschema #11: SentinelEvent]/action/anyOf[subschema #1]/` response property for the response status `200`
  - removed the `continue` enum value from the `events/items/anyOf[subschema #11: SentinelEvent]/action/anyOf[subschema #1]/` response property for the response status `200`
- **2026-10-09** `ec4d931a2331`: 2 info
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/description` to the response with the `200` status
  - added `#/components/schemas/SentinelEvent` to the `events/items/` response property `anyOf` list for the response status `200`
- **2026-10-06** `1f5d5947c8ce`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/requested_model` to the response with the `200` status
- **2026-10-05** `49e746ef77db`: 2 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/response_id` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/request_ids` to the response with the `200` status
- **2026-09-30** `94cf3492cc34`: 19 info
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/choices/items/message/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #7: ToolEvent]/result/anyOf[subschema #10]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #7: ToolEvent]/result/anyOf[subschema #5: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `messages/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `messages/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `messages/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
  - added the optional property `messages/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/cache_breakpoint` to the response with the `200` status
- **2026-09-15** `211de6950b48`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/fail_on_refusal` to the response with the `200` status
- **2026-09-13** `32639b1ac910`: 1 info
  - added `#/components/schemas/ReviewEvent` to the `events/items/` response property `anyOf` list for the response status `200`
- **2026-09-02** `d355ae9ed598`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/stream_idle_timeout` to the response with the `200` status
- **2026-08-27** `1ff4ef91e5b1`: 1 breaking, 4 info
  - the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint/anyOf[subschema #1: CheckpointSampleConfig]/sandbox_paths/anyOf[subschema #1]/additionalProperties/` response's property type changed from `array` to no type for status `200`
  - added the optional property `events/items/anyOf[subschema #15: ScoreEvent]/score/history/items/reason` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #15: ScoreEvent]/score/reason` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #16: ScoreEditEvent]/edit/reason` to the response with the `200` status
  - added `#/components/schemas/SandboxSnapshotConfig, subschema #1` to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint/anyOf[subschema #1: CheckpointSampleConfig]/sandbox_paths/anyOf[subschema #1]/additionalProperties/` response property `anyOf` list for the response status `200`
- **2026-08-18** `80dc9ada6cd6`: 5 warning
  - added the new `sandbox_unavailable` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `sandbox_unavailable` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `sandbox_unavailable` enum value to the `events/items/anyOf[subschema #7: ToolEvent]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `sandbox_unavailable` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `sandbox_unavailable` enum value to the `messages/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
- **2026-07-30** `98c593efb87a`: 19 info
  - added the required property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #6: ModelEvent]/output/choices/items/message/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #7: ToolEvent]/result/anyOf[subschema #10]/items/anyOf[subschema #5: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events/items/anyOf[subschema #7: ToolEvent]/result/anyOf[subschema #9: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `messages/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `messages/items/anyOf[subschema #2: ChatMessageUser]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `messages/items/anyOf[subschema #3: ChatMessageAssistant]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
  - added the required property `messages/items/anyOf[subschema #4: ChatMessageTool]/content/anyOf[subschema #2]/items/anyOf[subschema #8: ContentDocument]/citations` to the response with the `200` status
- **2026-07-13** `e506910d9041`: 1 info
  - added the optional property `events/items/anyOf[subschema #12: CompactionEvent]/role` to the response with the `200` status
- **2026-07-12** `c79b8e0c7c71`: 1 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/reasoning_mode` to the response with the `200` status
- **2026-06-18** `794e93ec2f5a`: 1 warning, 1 info
  - added the new `turn` enum value to the `events/items/anyOf[subschema #2: SampleLimitEvent]/type` response property for the response status `200`
  - added the optional property `events/items/anyOf[subschema #11: CheckpointEvent]/trigger_metadata` to the response with the `200` status
- **2026-06-12** `6524bc801d9f`: 1 info
  - the `min` response's property default value changed from `4` to `10` for the status `200`
- **2026-06-11** `2b475eed973f`: 2 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/fallback_models` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/fallback` to the response with the `200` status
- **2026-06-08** `ff9253d6abc6`: 1 warning
  - added the new `agent_complete` enum value to the `events/items/anyOf[subschema #11: CheckpointEvent]/trigger` response property for the response status `200`
- **2026-06-07** `6c8df7e4afe7`: 5 info
  - added the optional property `events/items/anyOf[subschema #11: CheckpointEvent]/host/additional_files` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #11: CheckpointEvent]/host/files` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #11: CheckpointEvent]/sandboxes/additionalProperties/additional_files` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #11: CheckpointEvent]/sandboxes/additionalProperties/files` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/choices/items/stop_details` to the response with the `200` status
- **2026-05-27** `2f4a5a21bc21`: 4 info
  - added the optional property `events/items/anyOf[subschema #13: InputEvent]/content` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #13: InputEvent]/fields` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #13: InputEvent]/message` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #13: InputEvent]/outcome` to the response with the `200` status
- **2026-05-21** `0c0a9d3aebd5`: 22 warning, 3 info
  - added the new `cancelled` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `cancelled` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `cancelled` enum value to the `events/items/anyOf[subschema #7: ToolEvent]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `cancelled` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `cancelled` enum value to the `messages/items/anyOf[subschema #4: ChatMessageTool]/error/anyOf[subschema #1: ToolCallError]/type` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #2: ChatMessageUser]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #3: ChatMessageAssistant]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #4: ChatMessageTool]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #1: ChatMessageSystem]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #2: ChatMessageUser]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #3: ChatMessageAssistant]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/input/items/anyOf[subschema #4: ChatMessageTool]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/output/choices/items/message/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #1: ChatMessageSystem]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #2: ChatMessageUser]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #3: ChatMessageAssistant]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `events_data/anyOf[subschema #1: EventsData]/messages/items/anyOf[subschema #4: ChatMessageTool]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `messages/items/anyOf[subschema #1: ChatMessageSystem]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `messages/items/anyOf[subschema #2: ChatMessageUser]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `messages/items/anyOf[subschema #3: ChatMessageAssistant]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `operator` enum value to the `messages/items/anyOf[subschema #4: ChatMessageTool]/source/anyOf[subschema #1]/` response property for the response status `200`
  - added `#/components/schemas/CheckpointEvent, #/components/schemas/InterruptEvent` to the `events/items/` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/Manual` to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint/anyOf[subschema #1: CheckpointSampleConfig]/trigger` response property `anyOf` list for the response status `200`
  - removed `subschema #6` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint/anyOf[subschema #1: CheckpointSampleConfig]/trigger` response property `anyOf` list for the response status `200`
- **2026-05-14** `c5912d39952c`: 2 info
  - added `#/components/schemas/CheckpointSampleConfig` to the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/CheckpointConfig` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint` response property `anyOf` list for the response status `200`
- **2026-05-12** `529267cc3270`: 1 info
  - added the optional property `events/items/anyOf[subschema #1: SampleInitEvent]/sample/checkpoint` to the response with the `200` status
- **2026-05-10** `8429fc89aef3`: 2 info
  - added `subschema #2` to the `events/items/anyOf[subschema #6: ModelEvent]/config/adaptive_connections` response property `anyOf` list for the response status `200`
  - the `max` response's property default value changed from `200` to `100` for the status `200`
- **2026-05-05** `2d1a14ec3f86`: 2 breaking, 2 info
  - removed the required property `events/items/anyOf[subschema #9: BranchEvent -> subschema #10: BranchEvent]/from_message` from the response with the `200` status
  - removed the required property `events/items/anyOf[subschema #9: BranchEvent -> subschema #10: BranchEvent]/from_span` from the response with the `200` status
  - added `#/components/schemas/AnchorEvent` to the `events/items/` response property `anyOf` list for the response status `200`
  - added the required property `events/items/anyOf[subschema #9: BranchEvent -> subschema #10: BranchEvent]/from_anchor` to the response with the `200` status
- **2026-05-04** `f982dad7cbc2`: 3 info
  - added the optional property `events/items/anyOf[subschema #12: ScoreEvent]/scorer` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #12: ScoreEvent]/scorer_args` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/adaptive_connections` to the response with the `200` status
- **2026-04-27** `aad917125439`: 1 info
  - added the required property `timelines/items/root/tool_invoked` to the response with the `200` status
- **2026-04-24** `a9ee30d24343`: 2 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/prompt_logprobs` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/output/choices/items/prompt_logprobs` to the response with the `200` status
- **2026-04-16** `ace9de4a8f80`: 2 warning
  - added the new `max` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/config/reasoning_effort/anyOf[subschema #1]/` response property for the response status `200`
  - added the new `xhigh` enum value to the `events/items/anyOf[subschema #6: ModelEvent]/config/effort/anyOf[subschema #1]/` response property for the response status `200`
- **2026-04-07** `325804aabe5c`: 18 info
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/examples` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/maxLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/maximum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/minLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/minimum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema/anyOf[subschema #1: ResponseSchema]/json_schema/pattern` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/examples` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/maxLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/maximum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/minLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/minimum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties/anyOf[subschema #1: JSONSchema]/pattern` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/examples` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/maxLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/maximum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/minLength` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/minimum` to the response with the `200` status
  - added the optional property `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/pattern` to the response with the `200` status
- **2026-04-03** `0fc41a5c1e02`: 25 breaking, 240 info
  - the `events/items/anyOf[subschema #10: CompactionEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #11: InputEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #12: ScoreEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #13: ScoreEditEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #14: ErrorEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #15: LoggerEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #16: InfoEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #17: SpanBeginEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #18: SpanEndEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #19: StepEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #1: SampleInitEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #20: SubtaskEvent]/completed/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #20: SubtaskEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #2: SampleLimitEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #3: SandboxEvent]/completed/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #3: SandboxEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #4: StateEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #5: StoreEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #6: ModelEvent]/completed/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #6: ModelEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #7: ToolEvent]/completed/anyOf[subschema #1]/` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #7: ToolEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #8: ApprovalEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `events/items/anyOf[subschema #9: BranchEvent]/timestamp` response's property format changed from `date-time` to no format for status `200`
  - the `timelines/items/root/content/items/oneOf[subschema #1: TimelineEvent]/event` response's property type changed from no type to `string` for status `200`
  - added `#/components/schemas/JSONSchema-Output` to the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/JSONSchema-Output` to the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/additionalProperties` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/JSONSchema-Output` to the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/items` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/ResponseSchema-Output` to the `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/JSONSchema` from the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/additionalProperties` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/JSONSchema` from the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/additionalProperties` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/JSONSchema` from the `events/items/anyOf[subschema #6: ModelEvent]/tools/items/parameters/properties/additionalProperties/items` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/ResponseSchema` from the `events/items/anyOf[subschema #6: ModelEvent]/config/response_schema` response property `anyOf` list for the response status `200`
  - removed `#/components/schemas/SampleInitEvent, #/components/schemas/SampleLimitEvent, #/components/schemas/SandboxEvent, #/components/schemas/StateEvent, #/components/schemas/StoreEvent, #/components/schemas/ModelEvent, #/components/schemas/ToolEvent, #/components/schemas/ApprovalEvent, #/components/schemas/BranchEvent, #/components/schemas/CompactionEvent, #/components/schemas/InputEvent, #/components/schemas/ScoreEvent, #/components/schemas/ScoreEditEvent, #/components/schemas/ErrorEvent, #/components/schemas/LoggerEvent, #/components/schemas/InfoEvent, #/components/schemas/SpanBeginEvent, #/components/schemas/SpanEndEvent, #/components/schemas/StepEvent, #/components/schemas/SubtaskEvent` from the `timelines/items/root/content/items/oneOf[subschema #1: TimelineEvent]/event` response property `anyOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #16: InfoEvent]/data` response property `oneOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/citations/anyOf[subschema #1]/items/oneOf[subschema #1: ContentCitation]/internal/anyOf[subschema #1]/additionalProperties/` response property `oneOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/citations/anyOf[subschema #1]/items/oneOf[subschema #2: DocumentCitation]/internal/anyOf[subschema #1]/additionalProperties/` response property `oneOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/citations/anyOf[subschema #1]/items/oneOf[subschema #3: UrlCitation]/internal/anyOf[subschema #1]/additionalProperties/` response property `oneOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #1: ContentText]/internal/anyOf[#/components/schemas/JsonValue]/` response property `oneOf` list for the response status `200`
  - removed `subschema #1, subschema #2, subschema #3, subschema #4, subschema #5, subschema #6, subschema #7` from the `events/items/anyOf[subschema #1: SampleInitEvent]/sample/input/anyOf[subschema #2]/items/anyOf[subschema #1: ChatMessageSystem]/content/anyOf[subschema #2]/items/anyOf[subschema #2: ContentReasoning]/internal/anyOf[#/components/schemas/JsonValue]/` response property `oneOf` list for the response status `200`
  - …225 more
- **2026-04-02** `a072cd1fd97b`: 1 warning, 1 info
  - removed the optional property `timelines/items/root/forked_at` from the response with the `200` status
  - added the optional property `timelines/items/root/branched_from` to the response with the `200` status
- **2026-04-01** `0fce351d5c13`: 1 info
  - added the optional property `timelines/items/root/forked_at` to the response with the `200` status
- **2026-04-01** `af3651240779`: 1 info
  - added the required property `timelines/items/root/branches/items/from_span` to the response with the `200` status
- **2026-03-31** `aa4a640cbc6a`: 3 info
  - added `#/components/schemas/BranchEvent` to the `events/items/` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/BranchEvent` to the `timelines/items/root/branches/items/content/items/oneOf[subschema #1: TimelineEvent]/event` response property `anyOf` list for the response status `200`
  - added `#/components/schemas/BranchEvent` to the `timelines/items/root/content/items/oneOf[subschema #1: TimelineEvent]/event` response property `anyOf` list for the response status `200`
- **2026-03-20** `b52f37d083c2`: 1 info
  - added the optional property `events_data` to the response with the `200` status
- …earlier changes are on the page: https://skmtc.dev/meridianlabs-ai/apis/inspect-scout-viewer-api/changes/transcripts/:dir/:id/messages-events/get

---

[Operation](https://skmtc.dev/meridianlabs-ai/apis/inspect-scout-viewer-api/docs/transcripts/:dir/:id/messages-events/get.md) - [API](https://skmtc.dev/meridianlabs-ai/apis/inspect-scout-viewer-api.md) - [Page](https://skmtc.dev/meridianlabs-ai/apis/inspect-scout-viewer-api/changes/transcripts/:dir/:id/messages-events/get)
