import type { Api, Model, SimpleStreamOptions } from "@caupulican/pi-ai/types";
import type { ModelAdaptationProfile } from "./models/adaptation-store.ts";
export declare const MODEL_TOOL_PROTOCOL_VERSION = 1;
export type ModelToolProtocolReasonCode = "settings_disabled" | "settings_enabled" | "model_enabled" | "probe_calibrated" | "probe_calibration_missing" | "probe_calibration_failed" | "probe_calibration_invalid" | "probe_native" | "native_default";
export interface ModelToolProtocolResolution {
    protocol: SimpleStreamOptions["textToolCallProtocol"];
    reasonCode: ModelToolProtocolReasonCode;
    variantsTried?: readonly string[];
}
/**
 * Resolve the effective tool-call transport for any model and execution lane.
 *
 * A disabled setting and proven native capability always keep the native path active. Text-protocol
 * settings and model metadata apply only when native capability has not been proven. A probe-driven
 * text protocol is usable only with a current, recognized calibration; otherwise the model stays on
 * native calls for this turn. Callers use the reason code for diagnostics, but never reimplement the
 * precedence or silently substitute the default dialect.
 */
export declare function resolveModelToolProtocol(args: {
    model: Pick<Model<Api>, "textToolCallProtocol">;
    settingsOverride?: boolean;
    adaptation: Pick<ModelAdaptationProfile, "protocol" | "toolProbe">;
}): ModelToolProtocolResolution;
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