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Agentic AI Atlas · Cohere chat-stream / tool-call-start
protocol-message:cohere-tool-call-starta5c.ai
II.
ProtocolMessage overview

protocol-message:cohere-tool-call-start

Reference · live

Cohere chat-stream / tool-call-start overview

Begins a tool-call content block — emits id, function name, and an empty arguments string ready to receive deltas.

ProtocolMessageOutgoing · 0Incoming · 1

Attributes

displayName
Cohere chat-stream / tool-call-start
messageType
StreamEvent
subtype
none
direction
core-to-user
terminal
false
errorCategory
none
payloadSchema
type
StreamEvent
fields
  • type=tool-call-start
  • index
  • delta(message(tool_calls(id, type, function(name))))
description
Begins a tool-call content block — emits id, function name, and an empty arguments string ready to receive deltas.

Outgoing edges

None.

Incoming edges

emits_message_type1