/**
 * Twilio inbound webhook parsing and prompt shaping.
 *
 * The channel owns these small data shapes instead of exposing raw
 * Twilio webhook payloads as the public API surface.
 */
/** Channel-owned representation of one inbound Twilio text message. */
export interface TwilioTextMessage {
    readonly from: string;
    readonly to: string | undefined;
    readonly body: string;
    readonly messageSid: string | undefined;
    readonly accountSid: string | undefined;
    readonly raw: URLSearchParams;
}
/** Channel-owned representation of one inbound Twilio voice call. */
export interface TwilioVoiceCall {
    readonly from: string;
    readonly to: string | undefined;
    readonly callSid: string | undefined;
    readonly accountSid: string | undefined;
    readonly raw: URLSearchParams;
}
/** Channel-owned representation of one inbound Twilio voice transcription. */
export interface TwilioVoiceTranscription {
    readonly from: string;
    readonly to: string | undefined;
    readonly callSid: string | undefined;
    readonly text: string;
    readonly confidence: number | undefined;
    readonly transcriptionSid: string | undefined;
    readonly raw: URLSearchParams;
}
/**
 * Inbound identity fields for the model-visible `<twilio_context>` block.
 * Stores the caller and receiver numbers, the originating SID, and the turn
 * medium (text or voice).
 */
export interface TwilioInboundContext {
    readonly from: string;
    readonly to?: string;
    readonly messageSid?: string;
    readonly callSid?: string;
    readonly channel: "text" | "voice";
}
/** Parses Twilio's incoming-message webhook fields. */
export declare function parseTwilioTextMessage(params: URLSearchParams): TwilioTextMessage | null;
/** Parses Twilio's incoming-call webhook fields. */
export declare function parseTwilioVoiceCall(params: URLSearchParams): TwilioVoiceCall | null;
/**
 * Parses Twilio voice transcription fields.
 *
 * Supports `<Gather input="speech">` (`SpeechResult`), recording
 * transcription callbacks (`TranscriptionText`), and real-time
 * transcription callbacks (`TranscriptionData` JSON). Real-time partial
 * results are ignored until Twilio marks them final.
 */
export declare function parseTwilioVoiceTranscription(params: URLSearchParams): TwilioVoiceTranscription | null;
/** Renders a deterministic `<twilio_context>` block for the model. */
export declare function formatTwilioContextBlock(context: TwilioInboundContext): string;