--- title: "Changes to List Session Thread Events" method: GET path: "/v1/sessions/{session_id}/threads/{thread_id}/events?beta=true" --- # Changes to List Session Thread Events `GET /v1/sessions/{session_id}/threads/{thread_id}/events?beta=true` > Every recorded change to this operation, newest first. ## Timeline Changed in 37 of 261 revisions. - **2026-11-05** `037a593978dc`: 1 info - **2026-11-02** `9578ce4001dd`: 7 info - **2026-10-30** `90204ee2b975`: 1 breaking, 1 info - **2026-10-23** `f538a797852c`: 1 info - **2026-10-23** `8071e43a8476`: 1 info - **2026-10-22** `376dea998624`: 1 info - **2026-10-21** `94c83daca660`: 1 warning, 646 info - **2026-10-21** `b6f3fef9c0b5`: 1 info - **2026-10-14** `e6a88013f0b2`: 1 info - **2026-10-14** `938736033e4b`: 4 info - **2026-10-09** `ee978b5e1294`: 8 info - **2026-10-09** `166bdc0ad612`: 2 breaking, 3 info - **2026-10-07** `2705c258c5dc`: 2 info - **2026-10-07** `d619b4669a3e`: 2 info - **2026-09-30** `d721a6487a16`: 5 info - **2026-09-30** `12581332a78d`: 2 breaking, 4 info - **2026-09-30** `ab91b3e513b5`: 1 breaking, 2 info - **2026-09-28** `3cd29369f196`: 4 info - **2026-09-22** `257523f5aeb5`: 4 info - **2026-09-18** `3144b1e8c9e4`: 1 breaking, 1 warning - **2026-09-10** `96aef986008e`: 22 breaking, 24 info - **2026-09-04** `4789294140a2`: 1 info - **2026-09-01** `d1d189d791d1`: 2 info - **2026-08-19** `0042750ea1ee`: 8 breaking, 2 info - **2026-08-19** `d2b230555b7f`: 33 breaking, 22 info - **2026-08-07** `93d8fd7d6493`: 21 breaking, 10 info - **2026-07-24** `a97790bd7f18`: 4 info - **2026-07-22** `5e4a8830793b`: 2 info - **2026-06-30** `7caa9a75ddbc`: 2 info - **2026-06-09** `2336fecb081b`: 2 breaking, 2 info - **2026-06-09** `00259327305f`: 2 info - **2026-06-06** `546c704d347b`: 2 breaking, 10 info - **2026-05-28** `f9d488f9290d`: 2 info - **2026-05-19** `40e330aba8bc`: 1 breaking, 1 info - **2026-05-13** `88ef81f4f457`: 3 breaking - **2026-05-13** `80953dd6bb30`: 3 breaking, 3 info - **2026-05-06** `a4186730f56c`: 1 info ## Changes - **2026-11-05** `037a593978dc`: 1 info - added the enum value `admin-user-sign-out-2026-10-08` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-11-02** `9578ce4001dd`: 7 info - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/subagents/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagents]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagentsEnabled]/predefined_agents/items/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/user_location/anyOf[#/components/schemas/BetaManagedAgentsUserLocation]/country/anyOf[subschema #1]/` response's property pattern `^[A-Z]{2}$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/workflows/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflows]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflowsEnabled]/predefined_agents/items/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/user_location/anyOf[#/components/schemas/BetaManagedAgentsUserLocation]/country/anyOf[subschema #1]/` response's property pattern `^[A-Z]{2}$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/user_location/anyOf[#/components/schemas/BetaManagedAgentsUserLocation]/country/anyOf[subschema #1]/` response's property pattern `^[A-Z]{2}$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/user_location/anyOf[#/components/schemas/BetaManagedAgentsUserLocation]/country/anyOf[subschema #1]/` response's property pattern `^[A-Z]{2}$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/budget/anyOf[#/components/schemas/BetaManagedAgentsBudget]/oneOf[#/components/schemas/BetaManagedAgentsBudgetLimit]/max_list_cost/allOf[#/components/schemas/BetaMonetaryAmount]/amount` response's property pattern `^(0|[1-9]\d*)$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUsageEvent]/budget/anyOf[#/components/schemas/BetaManagedAgentsBudget]/oneOf[#/components/schemas/BetaManagedAgentsBudgetLimit]/max_list_cost/allOf[#/components/schemas/BetaMonetaryAmount]/amount` response's property pattern `^(0|[1-9]\d*)$` was added for the status `200` - the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUsageEvent]/usage/allOf[#/components/schemas/BetaManagedAgentsSessionUsageSnapshot]/list_cost/allOf[#/components/schemas/BetaMonetaryAmount]/amount` response's property pattern `^(0|[1-9]\d*)$` was added for the status `200` - **2026-10-30** `90204ee2b975`: 1 breaking, 1 info - added `#/components/schemas/BetaManagedAgentsToolUseLimitReachedError, #/components/schemas/BetaManagedAgentsCompactionLimitReachedError` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionErrorEvent]/error` response property `oneOf` list for the response status `200` - added `tool_use_limit_reached_error, compaction_limit_reached_error` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionErrorEvent]/error` response property for the response status `200` - **2026-10-23** `f538a797852c`: 1 info - added the enum value `experimental-claude-tag-2026-10-21` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-10-23** `8071e43a8476`: 1 info - added the enum value `analytics-usage-cost-2026-08-24` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-10-22** `376dea998624`: 1 info - added the enum value `message-threads-2026-08-12` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-10-21** `94c83daca660`: 1 warning, 646 info - deleted the `header` request parameter `x-api-key` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `media_type` response property const value `text/plain` was added for the status `200` - the `type` response property const value `advisor` was added for the status `200` - the `type` response property const value `agent` was added for the status `200` - the `type` response property const value `agent` was added for the status `200` - the `type` response property const value `agent` was added for the status `200` - the `type` response property const value `agent` was added for the status `200` - the `type` response property const value `agent.custom_tool_use` was added for the status `200` - the `type` response property const value `agent.mcp_tool_result` was added for the status `200` - the `type` response property const value `agent.mcp_tool_use` was added for the status `200` - the `type` response property const value `agent.message` was added for the status `200` - the `type` response property const value `agent.thinking` was added for the status `200` - the `type` response property const value `agent.thread_context_compacted` was added for the status `200` - the `type` response property const value `agent.thread_message_received` was added for the status `200` - the `type` response property const value `agent.thread_message_sent` was added for the status `200` - the `type` response property const value `agent.tool_result` was added for the status `200` - the `type` response property const value `agent.tool_use` was added for the status `200` - the `type` response property const value `agent_toolset_20260401` was added for the status `200` - the `type` response property const value `agent_toolset_20260401` was added for the status `200` - the `type` response property const value `agent_toolset_20260401` was added for the status `200` - the `type` response property const value `agent_toolset_20260401` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - the `type` response property const value `always_allow` was added for the status `200` - …607 more - **2026-10-21** `b6f3fef9c0b5`: 1 info - added the enum value `webhooks-2026-10-07` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-10-14** `e6a88013f0b2`: 1 info - added the enum value `telemetry-destinations-2026-08-11` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-10-14** `938736033e4b`: 4 info - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/execution_identity` to the response with the `200` status - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/subagents/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagents]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagentsEnabled]/predefined_agents/items/execution_identity` to the response with the `200` status - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/workflows/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflows]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflowsEnabled]/predefined_agents/items/execution_identity` to the response with the `200` status - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/execution_identity` to the response with the `200` status - **2026-10-09** `ee978b5e1294`: 8 info - added `subschema #12, subschema #13` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #12, subschema #13` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/subagents/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagents]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagentsEnabled]/predefined_agents/items/model/id` response property `anyOf` list for the response status `200` - added `subschema #12, subschema #13` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/workflows/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflows]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflowsEnabled]/predefined_agents/items/model/id` response property `anyOf` list for the response status `200` - added `subschema #12, subschema #13` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/subagents/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagents]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentSubagentsEnabled]/predefined_agents/items/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagent20261001]/workflows/allOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflows]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentWorkflowsEnabled]/predefined_agents/items/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-10-09** `166bdc0ad612`: 2 breaking, 3 info - added `#/components/schemas/BetaManagedAgentsSessionMultiagent20261001` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsWorkflowRunCreatedEvent, #/components/schemas/BetaManagedAgentsWorkflowRunStatusEndedEvent, #/components/schemas/BetaManagedAgentsWorkflowRunPhaseStartedEvent, #/components/schemas/BetaManagedAgentsWorkflowRunPhaseEndedEvent, #/components/schemas/BetaManagedAgentsWorkflowRunStatusRunningEvent, #/components/schemas/BetaManagedAgentsWorkflowRunStatusIdleEvent, #/components/schemas/BetaManagedAgentsWorkflowRunErrorEvent` to the `data/items/` response property `oneOf` list for the response status `200` - added `multiagent_20261001` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/` response property for the response status `200` - added `workflow_run.created, workflow_run.status_ended, workflow_run.phase_started, workflow_run.phase_ended, workflow_run.status_running, workflow_run.status_idle, workflow_run.error` discriminator mapping keys to the `data/items/` response property for the response status `200` - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadCreatedEvent]/workflow_run_id` to the response with the `200` status - **2026-10-07** `2705c258c5dc`: 2 info - added `subschema #1` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #1` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-10-07** `d619b4669a3e`: 2 info - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebFetchToolConfig]/url_sources` to the response with the `200` status - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebFetchToolConfig]/url_sources` to the response with the `200` status - **2026-09-30** `d721a6487a16`: 5 info - added the enum value `spend-limit-reads-2026-09-26` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - added `subschema #15, subschema #16` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #15, subschema #16` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #15, subschema #16` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #15, subschema #16` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-09-30** `12581332a78d`: 2 breaking, 4 info - added `#/components/schemas/BetaManagedAgentsSessionRefusal` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionStatusIdleEvent]/stop_reason` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsSessionRefusal` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadStatusIdleEvent]/stop_reason` response property `oneOf` list for the response status `200` - added `refusal` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionStatusIdleEvent]/stop_reason` response property for the response status `200` - added `refusal` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadStatusIdleEvent]/stop_reason` response property for the response status `200` - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionStatusIdleEvent]/stop_details` to the response with the `200` status - added the required property `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadStatusIdleEvent]/stop_details` to the response with the `200` status - **2026-09-30** `ab91b3e513b5`: 1 breaking, 2 info - added `#/components/schemas/BetaManagedAgentsRepositoryAuthenticationError, #/components/schemas/BetaManagedAgentsRepositoryForbiddenError, #/components/schemas/BetaManagedAgentsRepositoryNotFoundError, #/components/schemas/BetaManagedAgentsRepositoryCheckoutError, #/components/schemas/BetaManagedAgentsRepositoryCloneError` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionErrorEvent]/error` response property `oneOf` list for the response status `200` - added the enum value `ce-plugins-2026-09-01` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - added `repository_authentication_error, repository_forbidden_error, repository_not_found_error, repository_checkout_error, repository_clone_error` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionErrorEvent]/error` response property for the response status `200` - **2026-09-28** `3cd29369f196`: 4 info - added `subschema #1, subschema #4` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #1, subschema #4` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #3` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #3` from the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-09-22** `257523f5aeb5`: 4 info - added the enum value `inline-tools-2026-09-15` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - added the enum value `mcp-client-2026-09-15` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - added `subschema #2` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #2` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-09-18** `3144b1e8c9e4`: 1 breaking, 1 warning - for the `header` request parameter `anthropic-beta`, the type changed from `string` to `array` - for the `header` request parameter `anthropic-beta`, the type of property `items/` changed from `string` to no type - **2026-09-10** `96aef986008e`: 22 breaking, 24 info - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsBashToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsEditToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGlobToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGrepToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsReadToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebFetchToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWriteToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/default_config/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/configs/items/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/default_config/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsBashToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsEditToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGlobToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGrepToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsReadToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebFetchToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWriteToolConfig]/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/default_config/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/configs/items/permission_policy` response property `oneOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/default_config/permission_policy` response property `oneOf` list for the response status `200` - added the optional property `data/items/oneOf[#/components/schemas/BetaManagedAgentsAgentMcpToolUseEvent]/evaluation` to the response with the `200` status - added the optional property `data/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolUseEvent]/evaluation` to the response with the `200` status - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsBashToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsEditToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGlobToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGrepToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsReadToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebFetchToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWriteToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/default_config/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/configs/items/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/default_config/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsBashToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsEditToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGlobToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsGrepToolConfig]/permission_policy` response property for the response status `200` - added `auto` discriminator mapping keys to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsReadToolConfig]/permission_policy` response property for the response status `200` - …6 more - **2026-09-04** `4789294140a2`: 1 info - added the new optional `header` request parameter `anthropic-workspace-id` - **2026-09-01** `d1d189d791d1`: 2 info - added `subschema #2` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #2` to the `data/items/oneOf[#/components/schemas/BetaManagedAgentsSessionUpdatedEvent]/agent/anyOf[#/components/schemas/BetaManagedAgentsSessionAgent]/multiagent/anyOf[#/components/schemas/BetaManagedAgentsSessionMultiagent]/oneOf[#/components/schemas/BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - …earlier changes are on the page: https://skmtc.dev/anthropics/apis/anthropic-api/changes/v1/sessions/:session_id/threads/:thread_id/events%3Fbeta=true/get --- [Operation](https://skmtc.dev/anthropics/apis/anthropic-api/docs/v1/sessions/:session_id/threads/:thread_id/events%3Fbeta=true/get.md) - [API](https://skmtc.dev/anthropics/apis/anthropic-api.md) - [Page](https://skmtc.dev/anthropics/apis/anthropic-api/changes/v1/sessions/:session_id/threads/:thread_id/events%3Fbeta=true/get)