Changes to Send Events

post/v1/sessions/{session_id}/events?beta=true

Nov 5, 2026037a593978dc Revision changes
- 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
Oct 23, 2026f538a797852c Revision changes
- 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
Oct 23, 20268071e43a8476 Revision changes
- 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
Oct 22, 2026376dea998624 Revision changes
- info
  added the enum value message-threads-2026-08-12 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
Oct 21, 202694c83daca660 Revision changes
- breaking
  the request property const value text/plain was added
- breaking
  the request property const value text/plain was added
- breaking
  the request property const value text/plain was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value base64 was added
- breaking
  the request property const value document was added
- breaking
  the request property const value document was added
- breaking
  the request property const value document was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value file was added
- breaking
  the request property const value image was added
- breaking
  the request property const value image was added
- breaking
  the request property const value image was added
- breaking
  the request property const value redacted was added
- breaking
  the request property const value search_result was added
- breaking
  the request property const value search_result was added
- breaking
  the request property const value system.message was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value text was added
- breaking
  the request property const value url was added
- breaking
  the request property const value url was added
- breaking
  the request property const value url was added
- breaking
  the request property const value url was added
- breaking
  the request property const value url was added
- breaking
  the request property const value url was added
- breaking
  the request property const value user.custom_tool_result was added
- breaking
  the request property const value user.define_outcome was added
- breaking
  the request property const value user.interrupt was added
- breaking
  the request property const value user.message was added
- breaking
  the request property const value user.tool_confirmation was added
- breaking
  the request property const value user.tool_result was added
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value base64 of the request property /////////////////////
- breaking
  removed the enum value document of the request property ////////////
- breaking
  removed the enum value document of the request property ////////////
- breaking
  removed the enum value document of the request property ////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value file of the request property ///////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value file of the request property /////////////////////
- breaking
  removed the enum value image of the request property ////////////
- breaking
  removed the enum value image of the request property ////////////
- breaking
  removed the enum value image of the request property ////////////
- breaking
  removed the enum value redacted of the request property ////////////
- breaking
  removed the enum value search_result of the request property ////////////
- breaking
  removed the enum value search_result of the request property ////////////
- breaking
  removed the enum value system.message of the request property //////
- breaking
  removed the enum value text of the request property ////////////
- breaking
  removed the enum value text of the request property /////////////////////
- breaking
  removed the enum value text of the request property //////////////
- breaking
  removed the enum value text of the request property ////////////
- breaking
  removed the enum value text of the request property ///////////////
- breaking
  removed the enum value text of the request property /////////////////////
- breaking
  removed the enum value text of the request property ////////////
- breaking
  removed the enum value text of the request property /////////////////////
- breaking
  removed the enum value text of the request property //////////////
- breaking
  removed the enum value text of the request property ////////////
- breaking
  removed the enum value text/plain of the request property /////////////////////
- breaking
  removed the enum value text/plain of the request property /////////////////////
- breaking
  removed the enum value text/plain of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value url of the request property /////////////////////
- breaking
  removed the enum value user.custom_tool_result of the request property //////
- breaking
  removed the enum value user.define_outcome of the request property //////
- breaking
  removed the enum value user.interrupt of the request property //////
- breaking
  removed the enum value user.message of the request property //////
- breaking
  removed the enum value user.tool_confirmation of the request property //////
- breaking
  removed the enum value user.tool_result of the request property //////
- info
  the response property const value text/plain was added for the status
- info
  the response property const value text/plain was added for the status
- info
  the response property const value text/plain was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value base64 was added for the status
- info
  the response property const value document was added for the status
- info
  the response property const value document was added for the status
- info
  the response property const value document was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value file was added for the status
- info
  the response property const value image was added for the status
- info
  the response property const value image was added for the status
- info
  the response property const value image was added for the status
- info
  the response property const value redacted was added for the status
- info
  the response property const value search_result was added for the status
- info
  the response property const value search_result was added for the status
- info
  the response property const value system.message was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value text was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value url was added for the status
- info
  the response property const value user.custom_tool_result was added for the status
- info
  the response property const value user.define_outcome was added for the status
- info
  the response property const value user.interrupt was added for the status
- info
  the response property const value user.message was added for the status
- info
  the response property const value user.tool_confirmation was added for the status
- info
  the response property const value user.tool_result was added for the status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the base64 enum value from the ///////////////////// response property for the response status
- info
  removed the document enum value from the //////////// response property for the response status
- info
  removed the document enum value from the //////////// response property for the response status
- info
  removed the document enum value from the //////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the file enum value from the /////////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the file enum value from the ///////////////////// response property for the response status
- info
  removed the image enum value from the //////////// response property for the response status
- info
  removed the image enum value from the //////////// response property for the response status
- info
  removed the image enum value from the //////////// response property for the response status
- info
  removed the redacted enum value from the //////////// response property for the response status
- info
  removed the search_result enum value from the //////////// response property for the response status
- info
  removed the search_result enum value from the //////////// response property for the response status
- info
  removed the system.message enum value from the ////// response property for the response status
- info
  removed the text enum value from the //////////// response property for the response status
- info
  removed the text enum value from the ///////////////////// response property for the response status
- info
  removed the text enum value from the ////////////// response property for the response status
- info
  removed the text enum value from the //////////// response property for the response status
- info
  removed the text enum value from the /////////////// response property for the response status
- info
  removed the text enum value from the ///////////////////// response property for the response status
- info
  removed the text enum value from the //////////// response property for the response status
- info
  removed the text enum value from the ///////////////////// response property for the response status
- info
  removed the text enum value from the ////////////// response property for the response status
- info
  removed the text enum value from the //////////// response property for the response status
- info
  removed the text/plain enum value from the ///////////////////// response property for the response status
- info
  removed the text/plain enum value from the ///////////////////// response property for the response status
- info
  removed the text/plain enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the url enum value from the ///////////////////// response property for the response status
- info
  removed the user.custom_tool_result enum value from the ////// response property for the response status
- info
  removed the user.define_outcome enum value from the ////// response property for the response status
- info
  removed the user.interrupt enum value from the ////// response property for the response status
- info
  removed the user.message enum value from the ////// response property for the response status
- info
  removed the user.tool_confirmation enum value from the ////// response property for the response status
- info
  removed the user.tool_result enum value from the ////// response property for the response status
Oct 21, 2026b6f3fef9c0b5 Revision changes
- info
  added the enum value webhooks-2026-10-07 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
Oct 14, 2026e6a88013f0b2 Revision changes
- info
  added the enum value telemetry-destinations-2026-08-11 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
Sep 30, 2026d721a6487a16 Revision changes
- 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
Sep 30, 2026ab91b3e513b5 Revision changes
- info
  added the enum value ce-plugins-2026-09-01 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
Sep 22, 2026257523f5aeb5 Revision changes
- info
  added the enum value inline-tools-2026-09-15 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
- info
  added the enum value mcp-client-2026-09-15 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta
Sep 18, 20263144b1e8c9e4 Revision changes
- breaking
  for the header request parameter anthropic-beta, the type changed from string to array
- warning
  for the header request parameter anthropic-beta, the type of property items/ changed from string to no type
Sep 4, 20264789294140a2 Revision changes
- info
  added the new optional header request parameter anthropic-workspace-id
Aug 19, 2026d2b230555b7f Revision changes
- breaking
  the request property //////////// became not nullable
- breaking
  the request property //////////// became not nullable
- breaking
  the request property ////// became not nullable
- breaking
  the request property ////// became not nullable
- breaking
  the request property ////// became not nullable
- breaking
  the request property //////////// became not nullable
- breaking
  the request property //////////// became not nullable
- breaking
  the request property ////// became not nullable
- breaking
  the request property //////////// became not nullable
- breaking
  the request property //////////// became not nullable
- breaking
  the request property ////// became not nullable
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserCustomToolResultEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/context list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserCustomToolResultEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/title list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserCustomToolResultEvent]/is_error list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserCustomToolResultEvent]/session_thread_id list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserDefineOutcomeEvent]/max_iterations list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserInterruptEvent]/session_thread_id list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserMessageEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/context list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserMessageEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/title list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolConfirmationEvent]/deny_message list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolConfirmationEvent]/session_thread_id list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolResultEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/context list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolResultEvent]/content/items/oneOf[BetaManagedAgentsDocumentBlock]/title list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolResultEvent]/is_error list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  response property data/items/oneOf[BetaManagedAgentsUserToolResultEvent]/session_thread_id list-of-types was widened by adding types null to media type application/json of response 200
- breaking
  the ////// response property's maxLength was unset from 10000 for the response status
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property ////// list-of-types was widened by adding types null to media type application/json
- info
  request property ////// list-of-types was widened by adding types null to media type application/json
- info
  request property ////// list-of-types was widened by adding types null to media type application/json
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property ////// list-of-types was widened by adding types null to media type application/json
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property //////////// list-of-types was widened by adding types null to media type application/json
- info
  request property ////// list-of-types was widened by adding types null to media type application/json
- info
  removed from the ////// response property allOf list for the response status
- info
  removed from the ////// response property allOf list for the response status
- info
  removed from the ////// response property allOf list for the response status
- info
  removed from the ////// response property allOf list for the response status
- info
  removed from the ////// response property allOf list for the response status
- info
  removed from the ////// response property allOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
- info
  added subschema #2 to the ////// response property anyOf list for the response status
Aug 7, 202693d8fd7d6493 Revision changes
- breaking
  added to the /////// response property oneOf list for the response status
- info
  added redacted discriminator mapping keys to the /////// request property
- info
  added to the /////// request property oneOf list
- info
  added redacted discriminator mapping keys to the /////// response property for the response status
Jun 9, 20262336fecb081b Revision changes
- breaking
  added to the / response property oneOf list for the response status
- info
  added system.message discriminator mapping keys to the / request property
- info
  added to the / request property oneOf list
- info
  added system.message discriminator mapping keys to the / response property for the response status
May 19, 202640e330aba8bc Revision changes
- breaking
  added to the / response property oneOf list for the response status
- info
  added user.tool_result discriminator mapping keys to the / request property
- info
  added to the / request property oneOf list
- info
  added user.tool_result discriminator mapping keys to the / response property for the response status
May 13, 202688ef81f4f457 Revision changes
- breaking
  removed the required property //////////// from the response with the status
- warning
  removed the request property ////////////
May 13, 202680953dd6bb30 Revision changes
- breaking
  added to the /////// response property oneOf list for the response status
- info
  added search_result discriminator mapping keys to the /////// request property
- info
  added to the /////// request property oneOf list
- info
  added search_result discriminator mapping keys to the /////// response property for the response status
May 6, 2026a4186730f56c Revision changes
- breaking
  added to the / response property oneOf list for the response status
- info
  added the new optional request property //////
- info
  added user.define_outcome discriminator mapping keys to the / request property
- info
  added to the / request property oneOf list
- info
  added the optional property ////// to the response with the status
- info
  added the optional property ////// to the response with the status
- info
  added the optional property ////// to the response with the status
- info
  added user.define_outcome discriminator mapping keys to the / response property for the response status
Apr 9, 2026d87d3ef6f636 Revision changes
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the //////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the ///////////////////// request property's minLength was increased from 0 to 1
- breaking
  the //////////// request property's minLength was increased from 0 to 1
Apr 8, 202669486316563e Revision changes
- info
  endpoint added