--- title: "Changes to Archive Session Thread" method: POST path: "/v1/sessions/{session_id}/threads/{thread_id}/archive?beta=true" --- # Changes to Archive Session Thread `POST /v1/sessions/{session_id}/threads/{thread_id}/archive?beta=true` > Every recorded change to this operation, newest first. ## Timeline Changed in 33 of 287 revisions. - **2026-11-09** `d53195e9d075`: 2 info - **2026-11-05** `037a593978dc`: 1 info - **2026-11-02** `9578ce4001dd`: 3 info - **2026-10-23** `f538a797852c`: 1 info - **2026-10-23** `8071e43a8476`: 1 info - **2026-10-22** `376dea998624`: 1 info - **2026-10-21** `94c83daca660`: 138 info - **2026-10-21** `b6f3fef9c0b5`: 1 info - **2026-10-14** `e6a88013f0b2`: 1 info - **2026-10-14** `938736033e4b`: 2 info - **2026-10-09** `ee978b5e1294`: 4 info - **2026-10-09** `166bdc0ad612`: 1 breaking, 2 info - **2026-10-07** `2705c258c5dc`: 1 info - **2026-10-07** `d619b4669a3e`: 1 info - **2026-09-30** `d721a6487a16`: 3 info - **2026-09-30** `ab91b3e513b5`: 1 info - **2026-09-28** `3cd29369f196`: 2 info - **2026-09-22** `257523f5aeb5`: 3 info - **2026-09-18** `3144b1e8c9e4`: 1 breaking, 1 warning - **2026-09-10** `96aef986008e`: 11 breaking, 11 info - **2026-09-04** `4789294140a2`: 1 info - **2026-09-01** `d1d189d791d1`: 1 info - **2026-08-26** `a5822939dde4`: 2 info - **2026-08-19** `0042750ea1ee`: 4 breaking, 1 info - **2026-08-19** `d2b230555b7f`: 3 breaking, 6 info - **2026-08-07** `93d8fd7d6493`: 5 info - **2026-07-24** `a97790bd7f18`: 2 info - **2026-07-22** `5e4a8830793b`: 1 info - **2026-06-30** `7caa9a75ddbc`: 1 info - **2026-06-09** `00259327305f`: 1 info - **2026-06-06** `546c704d347b`: 1 breaking, 5 info - **2026-05-28** `f9d488f9290d`: 1 info - **2026-05-06** `a4186730f56c`: 1 info ## Changes - **2026-11-09** `d53195e9d075`: 2 info - added `subschema #1` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsInlineAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #1` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **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`: 3 info - the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsInlineAgent]/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}$` was added for the status `200` - the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/oneOf[#/components/schemas/BetaManagedAgentsWebSearchToolConfig]/user_location/anyOf[#/components/schemas/BetaManagedAgentsUserLocation]/country/anyOf[subschema #1]/` response's property pattern `^[A-Z]{2}$` was added for the status `200` - the `usage/anyOf[#/components/schemas/BetaManagedAgentsSessionThreadUsage]/list_cost/anyOf[#/components/schemas/BetaMonetaryAmount]/amount` response's property pattern `^(0|[1-9]\d*)$` was added for the 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`: 138 info - 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_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` - 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_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - the `type` response property const value `always_ask` was added for the status `200` - …98 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`: 2 info - added the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsInlineAgent]/execution_identity` to the response with the `200` status - added the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/execution_identity` to the response with the `200` status - **2026-10-09** `ee978b5e1294`: 4 info - added `subschema #12, subschema #13` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsInlineAgent]/model/id` response property `anyOf` list for the response status `200` - added `subschema #12, subschema #13` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsInlineAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #12, subschema #13` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-10-09** `166bdc0ad612`: 1 breaking, 2 info - added `#/components/schemas/BetaManagedAgentsInlineAgent` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/` response property `oneOf` list for the response status `200` - added `inline` discriminator mapping keys to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/` response property for the response status `200` - added the required property `workflow_run_id` to the response with the `200` status - **2026-10-07** `2705c258c5dc`: 1 info - added `subschema #1` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-10-07** `d619b4669a3e`: 1 info - added the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 - **2026-09-30** `d721a6487a16`: 3 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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #15, subschema #16` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-09-30** `ab91b3e513b5`: 1 info - added the enum value `ce-plugins-2026-09-01` to the property `items/anyOf[subschema #2]/` of the `header` request parameter `anthropic-beta` - **2026-09-28** `3cd29369f196`: 2 info - added `subschema #1, subschema #4` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #3` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-09-22** `257523f5aeb5`: 3 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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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`: 11 breaking, 11 info - added `#/components/schemas/BetaManagedAgentsAutoPolicy` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/default_config/permission_policy` response property `oneOf` list for the response status `200` - added `auto` discriminator mapping keys to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/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 `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsMCPToolset]/default_config/permission_policy` response property for the response status `200` - **2026-09-04** `4789294140a2`: 1 info - added the new optional `header` request parameter `anthropic-workspace-id` - **2026-09-01** `d1d189d791d1`: 1 info - added `subschema #2` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-08-26** `a5822939dde4`: 2 info - added `#/components/schemas/BetaManagedAgentsSessionThreadAgentEntry` to the `agent` response property `allOf` list for the response status `200` - removed `#/components/schemas/BetaManagedAgentsSessionRosterEntry` from the `agent` response property `allOf` list for the response status `200` - **2026-08-19** `0042750ea1ee`: 4 breaking, 1 info - added `#/components/schemas/BetaManagedAgentsBashToolConfig, #/components/schemas/BetaManagedAgentsEditToolConfig, #/components/schemas/BetaManagedAgentsReadToolConfig, #/components/schemas/BetaManagedAgentsWriteToolConfig, #/components/schemas/BetaManagedAgentsGlobToolConfig, #/components/schemas/BetaManagedAgentsGrepToolConfig, #/components/schemas/BetaManagedAgentsWebFetchToolConfig, #/components/schemas/BetaManagedAgentsWebSearchToolConfig` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/` response property `oneOf` list for the response status `200` - removed the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/enabled` from the response with the `200` status - removed the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/name` from the response with the `200` status - removed the required property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/permission_policy` from the response with the `200` status - added discriminator to `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsAgentToolset20260401]/configs/items/` response property for the response status `200` - **2026-08-19** `d2b230555b7f`: 3 breaking, 6 info - response property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/description` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionRosterEntry]/oneOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/system` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `parent_thread_id` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - removed `#/components/schemas/BetaManagedAgentsSessionThreadStats` from the `stats` response property `allOf` list for the response status `200` - removed `#/components/schemas/BetaManagedAgentsSessionThreadUsage` from the `usage` response property `allOf` list for the response status `200` - removed `#/components/schemas/BetaTimestamp` from the `archived_at` response property `allOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsSessionThreadStats, subschema #2` to the `stats` response property `anyOf` list for the response status `200` - added `#/components/schemas/BetaManagedAgentsSessionThreadUsage, subschema #2` to the `usage` response property `anyOf` list for the response status `200` - added `#/components/schemas/BetaTimestamp, subschema #2` to the `archived_at` response property `anyOf` list for the response status `200` - **2026-08-07** `93d8fd7d6493`: 5 info - added the optional property `usage/allOf[#/components/schemas/BetaManagedAgentsSessionThreadUsage]/active_seconds` to the response with the `200` status - added the optional property `usage/allOf[#/components/schemas/BetaManagedAgentsSessionThreadUsage]/list_cost` to the response with the `200` status - added the optional property `usage/allOf[#/components/schemas/BetaManagedAgentsSessionThreadUsage]/server_tool_use` to the response with the `200` status - added `#/components/schemas/BetaManagedAgentsSessionRosterEntry` to the `agent` response property `allOf` list for the response status `200` - removed `#/components/schemas/BetaManagedAgentsSessionThreadAgent` from the `agent` response property `allOf` list for the response status `200` - **2026-07-24** `a97790bd7f18`: 2 info - added `subschema #4, subschema #5, subschema #6, subschema #7, subschema #11, subschema #12` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - removed `subschema #4, subschema #5, subschema #6, subschema #10, subschema #11` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-07-22** `5e4a8830793b`: 1 info - added the optional property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/effort` to the response with the `200` status - **2026-06-30** `7caa9a75ddbc`: 1 info - added `subschema #2` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-06-09** `00259327305f`: 1 info - added `subschema #2` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-06-06** `546c704d347b`: 1 breaking, 5 info - response property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsCustomTool]/input_schema/required` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - removed `#/components/schemas/BetaManagedAgentsStruct` from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsCustomTool]/input_schema/properties` response property `allOf` list for the response status `200` - added `subschema #1, subschema #2` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsCustomTool]/input_schema/properties` response property `anyOf` list for the response status `200` - the response property `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsCustomTool]/input_schema/type` became required for the status `200` - the `type` response property const value `object` was added for the status `200` - removed the `object` enum value from the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/tools/items/oneOf[#/components/schemas/BetaManagedAgentsCustomTool]/input_schema/type` response property for the response status `200` - **2026-05-28** `f9d488f9290d`: 1 info - added `subschema #2` to the `agent/allOf[#/components/schemas/BetaManagedAgentsSessionThreadAgent]/model/id` response property `anyOf` list for the response status `200` - **2026-05-06** `a4186730f56c`: 1 info - endpoint added --- [Operation](https://skmtc.dev/anthropics/apis/anthropic-api/docs/v1/sessions/:session_id/threads/:thread_id/archive%3Fbeta=true/post.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/archive%3Fbeta=true/post)