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Agentic AI Atlas · OpenAI Responses / response.output_item.added
protocol-message:openai-response-output-item-addeda5c.ai
II.
ProtocolMessage overview

protocol-message:openai-response-output-item-added

Reference · live

OpenAI Responses / response.output_item.added overview

Streaming SSE event announcing a new output item (message, function_call, or reasoning block) in the response. Codex CLI dispatches tool calls when item.type=function_call.

ProtocolMessageOutgoing · 0Incoming · 3

Attributes

displayName
OpenAI Responses / response.output_item.added
messageType
StreamEvent
subtype
none
direction
core-to-user
terminal
false
errorCategory
none
payloadSchema
event
response.output_item.added
fields
  • output_index
  • item.type
  • item.id
description
Streaming SSE event announcing a new output item (message, function_call, or reasoning block) in the response. Codex CLI dispatches tool calls when item.type=function_call.

Outgoing edges

None.

Incoming edges

emits_message_type3