Changes to Retrieve Message Batch results

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

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

added the enum value experimental-claude-tag-2026-10-21 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

added the enum value analytics-usage-cost-2026-08-24 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

added the enum value message-threads-2026-08-12 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

deleted the header request parameter x-api-key

added the enum value webhooks-2026-10-07 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

added the enum value telemetry-destinations-2026-08-11 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #15 subschema #16 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #15 subschema #16 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

the error response's property type changed from no type to object for status 400

added the optional property error/details to the response with the 400 status

removed discriminator from error response property for the response status 400

removed BetaInvalidRequestError BetaAuthenticationError BetaBillingError BetaPermissionError BetaNotFoundError BetaRateLimitError BetaGatewayTimeoutError BetaAPIError BetaOverloadedError from the error response property oneOf list for the response status 400

added the required property error/message to the response with the 400 status

added the required property error/type to the response with the 400 status

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

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 #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #18 subschema #19 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #18 subschema #19 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf 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 subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes/anyOf[subschema #1]/items/oneOf[subschema #1: ResponseToolAdditionBlock]/tool/oneOf[subschema #4: ResponseToolChangeToolDefinition]/definition/oneOf[subschema #25: AdvisorTool_20260301]/model response property anyOf list for the response status 200

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/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

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #1 subschema #2 subschema #3 subschema #4 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property anyOf list for the response status 200

added subschema #1 subschema #2 subschema #3 subschema #4 subschema #5 to the result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/category/anyOf[subschema #1: RefusalCategory] response property anyOf list for the response status 200

removed the bio enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

removed the bio 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

removed the cyber enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

removed the cyber 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

removed the frontier_llm enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

removed the frontier_llm 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

removed the general_harms enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

removed the general_harms 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

removed the reasoning_extraction enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

removed the reasoning_extraction 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

added BetaResponseMCPToolListingBlock to the result/oneOf[subschema #1: SucceededResult]/message/content/items response property oneOf list for the response status 200

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 the optional property result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/tool_changes to the response with the 200 status

added subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list 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 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model/anyOf[subschema #1: Model] response property anyOf list for the response status 200

added subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added mcp_tool_listing discriminator mapping keys to the result/oneOf[subschema #1: SucceededResult]/message/content/items response property for the response status 200

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

added the optional property result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #16: ResponseCompactionBlock]/signature to the response with the 200 status

added BetaThinkingDroppedInputTransformation BetaThinkingMismatchAllowedInputTransformation to the result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items response property oneOf list for the response status 200

the result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items response's property type changed from object to no type for status 200

removed the required property result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items/path from the response with the 200 status

removed the required property result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items/reason from the response with the 200 status

removed the required property result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items/type from the response with the 200 status

added discriminator to result/oneOf[subschema #1: SucceededResult]/message/input_transformations/anyOf[subschema #1]/items response property for the response status 200

added Model subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #1 subschema #2 subschema #3 subschema #4 subschema #5 subschema #6 subschema #7 subschema #8 subschema #9 subschema #10 subschema #11 subschema #12 subschema #13 subschema #14 subschema #15 subschema #16 subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

added the new content_too_large 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

the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #14: ResponseMCPToolResultBlock]/content/anyOf[subschema #2: beta_mcp_tool_result_block_content]/items/text response property's maxLength was unset from 5000000 for the response status 200

the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #1: ResponseTextBlock]/text response property's maxLength was unset from 5000000 for the response status 200

added the new optional header request parameter anthropic-workspace-id

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 408

added the non-success response with the status 409

added the non-success response with the status 412

added the non-success response with the status 413

added the non-success response with the status 429

added the non-success response with the status 431

added the non-success response with the status 499

added the non-success response with the status 500

added the non-success response with the status 501

added the non-success response with the status 503

added the non-success response with the status 504

added the non-success response with the status 529

added the optional property result/oneOf[subschema #1: SucceededResult]/message/input_transformations to the response with the 200 status

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #2 subschema #3 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

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

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

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/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

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/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

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

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/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

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/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

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/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/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/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/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/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/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

removed subschema #5 subschema #6 subschema #8 subschema #12 subschema #13 subschema #16 subschema #17 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/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/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/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/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added the required property result/oneOf[subschema #1: SucceededResult]/message/usage/fallback_credit to the response with the 200 status

added the new general_harms enum value to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

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

removed the military_weapons enum value from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

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

added subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

added subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list 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 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added the new military_weapons enum value to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger/category/anyOf[subschema #1: RefusalCategory] response property for the response status 200

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

removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/from/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/to/model response property anyOf list for the response status 200

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

removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

removed subschema #17 subschema #18 subschema #19 subschema #20 subschema #21 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #4: FallbackMessageIterationUsage]/model response property anyOf list for the response status 200

added the required property result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #17: ResponseFallbackBlock]/trigger to the response with the 200 status

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

added BetaFallbackMessageIterationUsage to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items response property oneOf list for the response status 200

added BetaResponseFallbackBlock to the result/oneOf[subschema #1: SucceededResult]/message/content/items response property oneOf list for the response status 200

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

added subschema #2 subschema #3 subschema #6 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/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

removed subschema #4 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added fallback discriminator mapping keys to the result/oneOf[subschema #1: SucceededResult]/message/content/items response property for the response status 200

added fallback_message discriminator mapping keys to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items response property for the response status 200

added the required property result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/fallback_credit_token to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/fallback_has_prefill_claim to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/stop_details/anyOf[subschema #1: RefusalStopDetails]/recommended_model to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #1: MessageIterationUsage]/model to the response with the 200 status

added the new model_not_found enum value to the result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #8: ResponseAdvisorToolResultBlock]/content/anyOf[subschema #1: ResponseAdvisorToolResultError]/error_code response property for the response status 200

added subschema #13 subschema #14 to the result/oneOf[subschema #1: SucceededResult]/message/model response property anyOf list for the response status 200

added subschema #13 subschema #14 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/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

removed subschema #13 subschema #14 from the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

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 subschema #2 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/model response property anyOf list for the response status 200

added the required property result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #8: ResponseAdvisorToolResultBlock]/content/anyOf[subschema #2: ResponseAdvisorResultBlock]/stop_reason to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/content/items/oneOf[subschema #8: ResponseAdvisorToolResultBlock]/content/anyOf[subschema #3: ResponseAdvisorRedactedResultBlock]/stop_reason to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/usage/output_tokens_details to the response with the 200 status

added the required property result/oneOf[subschema #1: SucceededResult]/message/diagnostics to the response with the 200 status

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

added subschema #2 subschema #14 subschema #15 subschema #16 subschema #17 to the result/oneOf[subschema #1: SucceededResult]/message/usage/iterations/anyOf[subschema #1]/items/oneOf[subschema #3: AdvisorMessageIterationUsage]/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