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TypeScript
\n\n```typescript\n// All events\nsession.on((event) => {\n console.log(event.type, event.data);\n});\n\n// Specific event type — data is narrowed automatically\nsession.on(\"assistant.message_delta\", (event) => {\n process.stdout.write(event.data.deltaContent);\n});\n```\n\n
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Python
\n\n```python\nfrom copilot.session_events import SessionEventType\n\ndef handle(event):\n if event.type == SessionEventType.ASSISTANT_MESSAGE_DELTA:\n print(event.data.delta_content, end=\"\", flush=True)\n\nsession.on(handle)\n```\n\n
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Go
\n\n```golang\nsession.On(func(event copilot.SessionEvent) {\n if d, ok := event.Data.(*copilot.AssistantMessageDeltaData); ok {\n fmt.Print(d.DeltaContent)\n }\n})\n```\n\n
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.NET
\n\n```csharp\nsession.On
(evt =>\n{\n if (evt is AssistantMessageDeltaEvent delta)\n {\n Console.Write(delta.Data.DeltaContent);\n }\n});\n```\n\n\n\n
Java
\n\n\n\n```java\n// All events\nsession.on(event -> System.out.println(event.getType()));\n\n// Specific event type — data is narrowed to the matching class\nsession.on(AssistantMessageDeltaEvent.class, event ->\n System.out.print(event.getData().deltaContent())\n);\n```\n\n
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\n
TypeScript
\n\n```typescript\nimport type { CopilotSession } from \"@github/copilot-sdk\";\n\nexport function subscribeParentResponse(session: CopilotSession): void {\n session.on(\"assistant.message_delta\", (event) => {\n if (!event.agentId) {\n process.stdout.write(event.data.deltaContent);\n }\n });\n}\n```\n\n
\n\n
Python
\n\n```python\nfrom copilot import CopilotSession, SessionEvent, SessionEventType\nfrom copilot.session_events import AssistantMessageDeltaData\n\ndef subscribe_parent_response(session: CopilotSession) -> None:\n def handle(event: SessionEvent) -> None:\n if event.type == SessionEventType.ASSISTANT_MESSAGE_DELTA and event.agent_id is None:\n data = event.data\n if isinstance(data, AssistantMessageDeltaData):\n print(data.delta_content, end=\"\", flush=True)\n\n session.on(handle)\n```\n\n
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Go
\n\n```golang\npackage example\n\nimport (\n \"fmt\"\n\n copilot \"github.com/github/copilot-sdk/go\"\n)\n\nfunc subscribeParentResponse(session *copilot.Session) {\n session.On(func(event copilot.SessionEvent) {\n if event.AgentID != nil {\n return\n }\n\n if d, ok := event.Data.(*copilot.AssistantMessageDeltaData); ok {\n fmt.Print(d.DeltaContent)\n }\n })\n}\n```\n\n
\n\n
.NET
\n\n```csharp\nusing System;\nusing GitHub.Copilot;\n\nstatic class ParentAgentResponseExample\n{\n public static void SubscribeParentResponse(CopilotSession session)\n {\n session.On
(evt =>\n {\n if (evt.AgentId is null)\n {\n Console.Write(evt.Data.DeltaContent);\n }\n });\n }\n}\n```\n\n\n\n
Java
\n\n```java\nimport com.github.copilot.CopilotSession;\nimport com.github.copilot.generated.AssistantMessageDeltaEvent;\n\nfinal class ParentAgentResponseExample {\n static void subscribeParentResponse(CopilotSession session) {\n session.on(AssistantMessageDeltaEvent.class, event -> {\n if (event.getAgentId() == null) {\n System.out.print(event.getData().deltaContent());\n }\n });\n }\n}\n```\n\n
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Rust
\n\n```rust\nuse github_copilot_sdk::session::Session;\n\nasync fn subscribe_parent_response(session: &Session) {\n let mut events = session.subscribe();\n\n while let Ok(event) = events.recv().await {\n if event.event_type == \"assistant.message_delta\" && event.agent_id.is_none() {\n if let Some(delta) = event.data.get(\"deltaContent\").and_then(|v| v.as_str()) {\n print!(\"{delta}\");\n }\n }\n }\n}\n```\n\n
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