v0.2.1-preview.2

Feature: onElicitationRequest callback for elicitation provider support

[Node] SDK clients can now act as elicitation providers by registering an onElicitationRequest callback in SessionConfig. The SDK negotiates the requestElicitation capability with the runtime, listens for broadcast elicitation.requested events, invokes the handler, and responds automatically. (#908)

const session = await client.createSession({
  onElicitationRequest: async (request) => {
    // respond to structured user input requests broadcast by the CLI runtime
    return { type: "string", value: "user response" };
  },
});

Feature: getSessionMetadata API across all SDKs

All SDKs now expose an efficient O(1) lookup of a single session's metadata by ID — no need to call listSessions and filter client-side. (#899)

• TypeScript: await client.getSessionMetadata(sessionId) — returns SessionMetadata | undefined
• C#: await client.GetSessionMetadataAsync(sessionId) — returns SessionMetadata?
• Python: await client.get_session_metadata(session_id) — returns SessionMetadata | None
• Go: client.GetSessionMetadata(ctx, sessionID) — returns (*SessionMetadata, error)

Feature: async context manager support for Python client and session

[Python] CopilotClient and CopilotSession now implement the async context manager protocol for automatic resource cleanup. (#475)

async with CopilotClient() as client:
    async with await client.create_session() as session:
        response = await session.get_response("Hello")

Other changes

• bugfix: [Node, Go, Python] structured ToolResultObject values were stringified before RPC, causing toolTelemetry and resultType to be silently lost on the server side (#970)
• improvement: [All] update bundled runtime to 1.0.15-2, resolving a regression with postToolUse hooks (#978)

New contributors

• @Sumanth007 made their first contribution in #475
• @Morabbin made their first contribution in #970

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