Expose IncludeSubAgentStreamingEvents in all four SDKs#1108
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stephentoub merged 3 commits intomainfrom Apr 18, 2026
Merged
Expose IncludeSubAgentStreamingEvents in all four SDKs#1108stephentoub merged 3 commits intomainfrom
stephentoub merged 3 commits intomainfrom
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Add the includeSubAgentStreamingEvents property to session config types and wire payloads across Node/TS, Python, Go, and .NET. The property controls whether streaming delta events from sub-agents (e.g., assistant.message_delta, assistant.reasoning_delta, assistant.streaming_delta with agentId set) are forwarded to the connection. When false, only non-streaming sub-agent events and subagent.* lifecycle events are forwarded. The SDK defaults the property to true when not specified, so existing consumers automatically receive sub-agent streaming events without any code changes. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
Exposes the runtime’s includeSubAgentStreamingEvents session option across the Node/TS, Python, Go, and .NET SDKs so consumers can opt in/out of receiving streaming delta events emitted by sub-agents.
Changes:
- Adds
includeSubAgentStreamingEvents/include_sub_agent_streaming_eventsto the public session config types in all four SDKs. - Wires the option through to
session.createandsession.resumepayloads, defaulting totruewhen unspecified. - Updates .NET copy constructors/cloning behavior to include the new config property.
Show a summary per file
| File | Description |
|---|---|
| python/copilot/session.py | Adds the new boolean option to SessionConfig and ResumeSessionConfig TypedDicts with documentation. |
| python/copilot/client.py | Adds include_sub_agent_streaming_events parameter to create/resume APIs and sends includeSubAgentStreamingEvents on the wire. |
| nodejs/src/types.ts | Adds includeSubAgentStreamingEvents?: boolean to SessionConfig and includes it in ResumeSessionConfig. |
| nodejs/src/client.ts | Sends includeSubAgentStreamingEvents in session create/resume requests (defaults to true). |
| go/types.go | Adds IncludeSubAgentStreamingEvents *bool to config structs and request structs (wire field). |
| go/client.go | Defaults request field to true when config pointer is nil; forwards explicit values for create/resume. |
| dotnet/src/Types.cs | Adds IncludeSubAgentStreamingEvents to session config classes with default true and copies it in clone/copy constructors. |
| dotnet/src/Client.cs | Adds the field to the internal create/resume wire records and populates it from config. |
Copilot's findings
- Files reviewed: 8/8 changed files
- Comments generated: 8
- .NET: Clone test assertions for SessionConfig and ResumeSessionConfig - Node.js: Wire payload tests for session.create and session.resume - Python: Payload capture tests for create_session and resume_session - Go: JSON marshal tests for createSessionRequest and resumeSessionRequest Each language tests both the default (true) and explicit false paths. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Completes the client-side exposure of
includeSubAgentStreamingEventsfrom runtime.