ACP v2 TypeScript SDK — EXPERIMENTAL DRAFT - v1.3.0
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    Type Alias SessionInfoUpdateExperimental

    Update to session metadata. All fields are optional to support partial updates.

    Agents send this notification to update session information like title or custom metadata. This allows clients to display dynamic session names and track session state changes.

    Omitted fields leave the existing session info unchanged. null clears the corresponding value.

    type SessionInfoUpdate = {
        title?: string | null;
        updatedAt?: string | null;
        _meta?: { [key: string]: unknown } | null;
    }
    Index
    title? updatedAt? _meta?
    title?: string | null

    Human-readable title for the session. Set to null to clear.

    updatedAt?: string | null

    RFC 3339 timestamp of last activity. Set to null to clear.

    Optional_meta

    _meta?: { [key: string]: unknown } | null

    The _meta property is reserved by ACP to allow clients and agents to attach additional metadata to their interactions. Omitted means no metadata update; null is an explicit clear signal. Implementations MUST NOT make assumptions about values at these keys.

    See protocol docs: Extensibility

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