import type { ModelCapabilityMetadata, ModelSelectionSignals } from "./model.js";
import type { ModelReasoningCapabilities } from "./reasoning.js";
export type ProviderDiscoveryResponseShape = "openai" | "anthropic" | "google" | "codex" | "bedrock";
export type DiscoveredProviderModel = ModelSelectionSignals & {
    id: string;
    capabilities?: Readonly<Record<string, string>>;
    metadata?: ModelCapabilityMetadata;
    reasoning?: ModelReasoningCapabilities;
};
export type ModelDiscoveryDiagnosticCode = "invalid_model" | "duplicate_model" | "provider_hidden_model";
export type ModelDiscoveryDiagnostic = Readonly<{
    code: ModelDiscoveryDiagnosticCode;
    provider: string;
    index: number;
    message: string;
}>;
export type ModelDiscoveryProtocolErrorCode = "invalid_payload" | "missing_model_array" | "no_usable_models";
export declare class ModelDiscoveryProtocolError extends Error {
    readonly code: ModelDiscoveryProtocolErrorCode;
    readonly provider: string;
    readonly payloadSnippet?: string;
    constructor(code: ModelDiscoveryProtocolErrorCode, provider: string, message: string, payload?: unknown, options?: ErrorOptions);
}
export type DecodeModelDiscoveryOptions = Readonly<{
    provider?: string;
    refreshedAt?: string;
    onDiagnostic?: (diagnostic: ModelDiscoveryDiagnostic) => void;
}>;
export type DecodeReasoningCapabilitiesOptions = Readonly<{
    provider?: string;
    refreshedAt?: string;
}>;
export declare function decodeReasoningCapabilities(entry: unknown, options?: DecodeReasoningCapabilitiesOptions): ModelReasoningCapabilities | undefined;
export declare function decodeModelDiscovery(shape: ProviderDiscoveryResponseShape, payload: unknown, options?: DecodeModelDiscoveryOptions): DiscoveredProviderModel[];