Changes to Create Session

Changed in 16 of the 67 revisions of this API.▲57●12○91

1. Aug 19, 20260042750ea1ee▲8●3○4
2. Aug 17, 2026d2b230555b7f▲31●8○42
3. Aug 6, 202693d8fd7d6493▲12○10
4. Jul 24, 2026a97790bd7f18▲2○6
5. Jul 22, 20265e4a8830793b○4
6. Jul 2, 2026ec00b28b50c2○1
7. Jun 30, 202626335fd8487a▲1●1
8. Jun 30, 20267caa9a75ddbc○2
9. Jun 9, 20262336fecb081b○1
10. Jun 9, 202600259327305f○2
11. Jun 6, 2026546c704d347b▲2○10
12. May 28, 2026f9d488f9290d○2
13. May 6, 2026a4186730f56c○2
14. Apr 23, 2026681182707119▲1○3
15. Apr 16, 2026e0696f59ae07○1
16. Apr 8, 202669486316563e○1

What changed

• Aug 19, 20260042750ea1ee▲8●3○4See the full diff
  • ▲

    added BetaManagedAgentsBashToolConfig BetaManagedAgentsEditToolConfig BetaManagedAgentsReadToolConfig BetaManagedAgentsWriteToolConfig BetaManagedAgentsGlobToolConfig BetaManagedAgentsGrepToolConfig BetaManagedAgentsWebFetchToolConfig BetaManagedAgentsWebSearchToolConfig to the agent/multiagent/anyOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/ response property oneOf list for the response status 200

    response-property-one-of-added

  • ▲

    added BetaManagedAgentsBashToolConfig BetaManagedAgentsEditToolConfig BetaManagedAgentsReadToolConfig BetaManagedAgentsWriteToolConfig BetaManagedAgentsGlobToolConfig BetaManagedAgentsGrepToolConfig BetaManagedAgentsWebFetchToolConfig BetaManagedAgentsWebSearchToolConfig to the agent/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/ response property oneOf list for the response status 200

    response-property-one-of-added

  • ▲

    removed the required property agent/multiagent/anyOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/enabled from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/anyOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/name from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/anyOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/permission_policy from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/enabled from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/name from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/permission_policy from the response with the 200 status

    response-required-property-removed

  • ●

    removed the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/enabled

    request-property-removed

  • ●

    removed the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/name

    request-property-removed

  • ●

    removed the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/permission_policy

    request-property-removed

  • ○

    added discriminator to agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/ request property

    request-property-discriminator-added

  • ○

    added BetaManagedAgentsBashToolConfigParams BetaManagedAgentsEditToolConfigParams BetaManagedAgentsReadToolConfigParams BetaManagedAgentsWriteToolConfigParams BetaManagedAgentsGlobToolConfigParams BetaManagedAgentsGrepToolConfigParams BetaManagedAgentsWebFetchToolConfigParams BetaManagedAgentsWebSearchToolConfigParams to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/ request property oneOf list

    request-property-one-of-added

  • ○

    added discriminator to agent/multiagent/anyOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/oneOf[BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/ response property for the response status 200

    response-property-discriminator-added

  • ○

    added discriminator to agent/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401]/configs/items/ response property for the response status 200

    response-property-discriminator-added

• Aug 17, 2026d2b230555b7f▲31●8○42See the full diff
  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/effort became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/inference_geo became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/speed became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsAnthropicSkillParams]/version became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsCustomSkillParams]/version became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/system became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/enabled became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/permission_policy became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/default_config became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/configs/items/enabled became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/configs/items/permission_policy became not nullable

    request-property-became-not-nullable

  • ▲

    the request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/default_config became not nullable

    request-property-became-not-nullable

  • ▲

    the request property initial_events/items/oneOf[BetaManagedAgentsUserDefineOutcomeEventParams]/max_iterations became not nullable

    request-property-became-not-nullable

  • ▲

    the request property initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/context became not nullable

    request-property-became-not-nullable

  • ▲

    the request property initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/title became not nullable

    request-property-became-not-nullable

  • ▲

    the request property resources/items/oneOf[BetaManagedAgentsFileResourceParams]/mount_path became not nullable

    request-property-became-not-nullable

  • ▲

    the request property resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/checkout became not nullable

    request-property-became-not-nullable

  • ▲

    the request property resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/mount_path became not nullable

    request-property-became-not-nullable

  • ▲

    the request property resources/items/oneOf[BetaManagedAgentsMemoryStoreResourceParam]/access became not nullable

    request-property-became-not-nullable

  • ▲

    the request property resources/items/oneOf[BetaManagedAgentsMemoryStoreResourceParam]/instructions became not nullable

    request-property-became-not-nullable

  • ▲

    the request property title became not nullable

    request-property-became-not-nullable

  • ▲

    response property agent/description list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property agent/system list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property deployment_id list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property outcome_evaluations/items/explanation list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/instructions list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/mount_path list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/name list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property title list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    the resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/instructions response property's maxLength was unset from 4096 for the response status 200

    response-property-max-length-unset

  • ▲

    the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResource]/checkout response's property type/format changed from object/ to / for status 200

    response-property-type-changed

  • ●

    removed BetaManagedAgentsAgentToolsetDefaultConfigParams from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/default_config request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsEffortParams from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/effort request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsMCPToolsetDefaultConfigParams from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/default_config request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsMountMode from the resources/items/oneOf[BetaManagedAgentsMemoryStoreResourceParam]/access request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsPermissionPolicy from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/permission_policy request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsPermissionPolicy from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/configs/items/permission_policy request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsRepositoryCheckout from the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/checkout request property allOf list

    request-property-all-of-removed

  • ●

    removed BetaManagedAgentsSpeed from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/speed request property allOf list

    request-property-all-of-removed

  • ○

    added BetaManagedAgentsAgentToolsetDefaultConfigParams subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/default_config request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsEffortParams subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/effort request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsMCPToolsetDefaultConfigParams subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/default_config request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsMountMode subschema #2 to the resources/items/oneOf[BetaManagedAgentsMemoryStoreResourceParam]/access request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsPermissionPolicy subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/permission_policy request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsPermissionPolicy subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/configs/items/permission_policy request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsRepositoryCheckout subschema #2 to the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/checkout request property anyOf list

    request-property-any-of-added

  • ○

    added BetaManagedAgentsSpeed subschema #2 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/speed request property anyOf list

    request-property-any-of-added

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/inference_geo list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsAnthropicSkillParams]/version list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsCustomSkillParams]/version list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/system list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsAgentToolset20260401Params]/configs/items/enabled list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsMCPToolsetParams]/configs/items/enabled list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property initial_events/items/oneOf[BetaManagedAgentsUserDefineOutcomeEventParams]/max_iterations list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/context list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/title list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property resources/items/oneOf[BetaManagedAgentsFileResourceParams]/mount_path list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/mount_path list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property resources/items/oneOf[BetaManagedAgentsMemoryStoreResourceParam]/instructions list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    request property title list-of-types was widened by adding types null to media type application/json

    request-property-list-of-types-widened

  • ○

    the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsAnthropicSkillParams]/version request property's minLength was decreased from 1 to 0

    request-property-min-length-decreased

  • ○

    the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/skills/items/oneOf[BetaManagedAgentsCustomSkillParams]/version request property's minLength was decreased from 1 to 0

    request-property-min-length-decreased

  • ○

    the resources/items/oneOf[BetaManagedAgentsFileResourceParams]/mount_path request property's minLength was decreased from 1 to 0

    request-property-min-length-decreased

  • ○

    the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResourceParams]/mount_path request property's minLength was decreased from 1 to 0

    request-property-min-length-decreased

  • ○

    removed BetaManagedAgentsBudget from the budget response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaManagedAgentsMountMode from the resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/access response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaManagedAgentsServerToolUsage from the usage/allOf[BetaManagedAgentsSessionUsage]/server_tool_use response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaManagedAgentsSessionMultiagent from the agent/multiagent response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaMonetaryAmount from the usage/allOf[BetaManagedAgentsSessionUsage]/list_cost response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaTimestamp from the archived_at response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaTimestamp from the outcome_evaluations/items/completed_at response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    added BetaManagedAgentsBudget subschema #2 to the budget response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaManagedAgentsMountMode subschema #2 to the resources/items/oneOf[BetaManagedAgentsMemoryStoreResource]/access response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaManagedAgentsRepositoryCheckout subschema #2 to the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResource]/checkout response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaManagedAgentsServerToolUsage subschema #2 to the usage/allOf[BetaManagedAgentsSessionUsage]/server_tool_use response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaManagedAgentsSessionMultiagent subschema #2 to the agent/multiagent response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaMonetaryAmount subschema #2 to the usage/allOf[BetaManagedAgentsSessionUsage]/list_cost response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaTimestamp subschema #2 to the archived_at response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added BetaTimestamp subschema #2 to the outcome_evaluations/items/completed_at response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    removed discriminator from resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResource]/checkout response property for the response status 200

    response-property-discriminator-removed

  • ○

    removed BetaManagedAgentsBranchCheckout BetaManagedAgentsCommitCheckout from the resources/items/oneOf[BetaManagedAgentsGitHubRepositoryResource]/checkout response property oneOf list for the response status 200

    response-property-one-of-removed

• Aug 6, 202693d8fd7d6493▲12○10See the full diff
  • ▲

    added BetaManagedAgentsSessionThreadAgent BetaManagedAgentsAdvisor to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/ response property oneOf list for the response status 200

    response-property-one-of-added

  • ▲

    the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/ response's property type/format changed from object/ to / for status 200

    response-property-type-changed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/description from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/id from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/mcp_servers from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/name from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/skills from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/system from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/type from the response with the 200 status

    response-required-property-removed

  • ▲

    removed the required property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/version from the response with the 200 status

    response-required-property-removed

  • ○

    added the new optional request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/inference_geo

    new-optional-request-property

  • ○

    added the new optional request property budget

    new-optional-request-property

  • ○

    added redacted discriminator mapping keys to the initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/ request property

    request-property-discriminator-mapping-added

  • ○

    added BetaManagedAgentsRedactedBlock to the initial_events/items/oneOf[BetaManagedAgentsUserMessageEventParams]/content/items/ request property oneOf list

    request-property-one-of-added

  • ○

    added the optional property agent/model/inference_geo to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/allOf[BetaManagedAgentsSessionUsage]/active_seconds to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/allOf[BetaManagedAgentsSessionUsage]/list_cost to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property usage/allOf[BetaManagedAgentsSessionUsage]/server_tool_use to the response with the 200 status

    response-optional-property-added

  • ○

    added discriminator to agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/ response property for the response status 200

    response-property-discriminator-added

  • ○

    added the required property budget to the response with the 200 status

    response-required-property-added

  This revision also has 1 change that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Jul 24, 2026a97790bd7f18▲2○6See the full diff
  • ▲

    removed subschema #4 subschema #5 subschema #6 subschema #10 subschema #11 from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/id request property anyOf list

    request-property-any-of-removed

  • ▲

    removed subschema #4 subschema #5 subschema #6 subschema #10 subschema #11 from the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[subschema #1: BetaManagedAgentsModel]/allOf[subschema #1: BetaManagedAgentsModel]/ request property anyOf list

    request-property-any-of-removed

  • ○

    added subschema #4 subschema #5 subschema #6 subschema #7 subschema #11 subschema #12 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/id request property anyOf list

    request-property-any-of-added

  • ○

    added subschema #4 subschema #5 subschema #6 subschema #7 subschema #11 subschema #12 to the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[subschema #1: BetaManagedAgentsModel]/allOf[subschema #1: BetaManagedAgentsModel]/ request property anyOf list

    request-property-any-of-added

  • ○

    added subschema #4 subschema #5 subschema #6 subschema #7 subschema #11 subschema #12 to the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #4 subschema #5 subschema #6 subschema #7 subschema #11 subschema #12 to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/id response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    removed subschema #4 subschema #5 subschema #6 subschema #10 subschema #11 from the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-removed

  • ○

    removed subschema #4 subschema #5 subschema #6 subschema #10 subschema #11 from the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/id response property anyOf list for the response status 200

    response-property-any-of-removed

• Jul 22, 20265e4a8830793b○4See the full diff
  • ○

    added the new optional request property agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/model/allOf[BetaManagedAgentsModelParams]/oneOf[BetaManagedAgentsModelConfigParams]/effort

    new-optional-request-property

  • ○

    added the new optional request property initial_events

    new-optional-request-property

  • ○

    added the optional property agent/model/effort to the response with the 200 status

    response-optional-property-added

  • ○

    added the optional property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/effort to the response with the 200 status

    response-optional-property-added

  This revision also has 7 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Jul 2, 2026ec00b28b50c2○1See the full diff
  • ○

    the agent/allOf[BetaManagedAgentsCreateSessionAgentUnionParams]/oneOf[subschema #2]/oneOf[BetaManagedAgentsAgentWithOverridesParams]/tools/items/oneOf[BetaManagedAgentsCustomToolParams]/description request property's maxLength was increased from 1024 to 4096

    request-property-max-length-increased

• Jun 30, 202626335fd8487a▲1●1See the full diff
  • ▲

    added BetaManagedAgentsCreateSessionAgentUnionParams to the agent request property allOf list

    request-property-all-of-added

  • ●

    removed BetaManagedAgentsAgentUnionParams from the agent request property allOf list

    request-property-all-of-removed

  This revision also has 20 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Jun 30, 20267caa9a75ddbc○2See the full diff
  • ○

    added subschema #2 to the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #2 to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/id response property anyOf list for the response status 200

    response-property-any-of-added

• Jun 9, 20262336fecb081b○1See the full diff
  • ○

    added the optional property deployment_id to the response with the 200 status

    response-optional-property-added

• Jun 9, 202600259327305f○2See the full diff
  • ○

    added subschema #2 to the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #2 to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/id response property anyOf list for the response status 200

    response-property-any-of-added

• Jun 6, 2026546c704d347b▲2○10See the full diff
  • ▲

    response property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/required list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ▲

    response property agent/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/required list-of-types was widened by adding types null to media type application/json of response 200

    response-property-list-of-types-widened

  • ○

    removed BetaManagedAgentsStruct from the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/properties response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    removed BetaManagedAgentsStruct from the agent/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/properties response property allOf list for the response status 200

    response-property-all-of-removed

  • ○

    added subschema #1 subschema #2 to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/properties response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #1 subschema #2 to the agent/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/properties response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    the response property agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/type became required for the status 200

    response-property-became-required

  • ○

    the response property agent/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/type became required for the status 200

    response-property-became-required

  • ○

    the type response property const value object was added for the status 200

    response-property-const-added

  • ○

    the type response property const value object was added for the status 200

    response-property-const-added

  • ○

    removed the object enum value from the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/type response property for the response status 200

    response-property-enum-value-removed

  • ○

    removed the object enum value from the agent/tools/items/oneOf[BetaManagedAgentsCustomTool]/input_schema/type response property for the response status 200

    response-property-enum-value-removed

• May 28, 2026f9d488f9290d○2See the full diff
  • ○

    added subschema #2 to the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-added

  • ○

    added subschema #2 to the agent/multiagent/allOf[BetaManagedAgentsSessionMultiagent]/oneOf[BetaManagedAgentsSessionMultiagentCoordinator]/agents/items/model/id response property anyOf list for the response status 200

    response-property-any-of-added

• May 6, 2026a4186730f56c○2See the full diff
  • ○

    added the required property agent/multiagent to the response with the 200 status

    response-required-property-added

  • ○

    added the required property outcome_evaluations to the response with the 200 status

    response-required-property-added

  This revision also has 22 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog

• Apr 23, 2026681182707119▲1○3See the full diff
  • ▲

    added BetaManagedAgentsMemoryStoreResource to the resources/items/ response property oneOf list for the response status 200

    response-property-one-of-added

  • ○

    added memory_store discriminator mapping keys to the resources/items/ request property

    request-property-discriminator-mapping-added

  • ○

    added BetaManagedAgentsMemoryStoreResourceParam to the resources/items/ request property oneOf list

    request-property-one-of-added

  • ○

    added memory_store discriminator mapping keys to the resources/items/ response property for the response status 200

    response-property-discriminator-mapping-added

• Apr 16, 2026e0696f59ae07○1See the full diff
  • ○

    added subschema #2 to the agent/model/id response property anyOf list for the response status 200

    response-property-any-of-added

• Apr 8, 202669486316563e○1See the full diff
  • ○

    endpoint added

    endpoint-added