import type { ReasoningEffort } from "../shared/reasoning-effort.js";
/** What the provider's own model list says about one model. */
export interface ProviderModelMetadata {
    id: string;
    /** `max_input_tokens`. */
    contextWindow?: number;
    /** `max_tokens`. */
    maxOutputTokens?: number;
    /**
     * Levels under `capabilities.effort` whose `supported` is true. Undefined
     * when the provider does not report effort for the model, which is not the
     * same as reporting that it supports none.
     */
    efforts?: ReasoningEffort[];
    /** Keys under `capabilities.thinking.types` whose `supported` is true. */
    thinkingTypes?: string[];
}
export type ProviderModelMetadataUnavailableReason = "missing-key" | "credential-unreadable" | "rejected" | "unreachable" | "provider-error";
export type ProviderModelMetadataResult = {
    state: "available";
    fetchedAt: number;
    models: Readonly<Record<string, ProviderModelMetadata>>;
} | {
    state: "unavailable";
    reason: ProviderModelMetadataUnavailableReason;
    status?: number;
};
/** One `data[]` entry of `GET /v1/models`; exported for specs. */
export declare function parseAnthropicModelEntry(entry: unknown): ProviderModelMetadata | null;
/**
 * The Anthropic model list for the key this request's chats use, cached per
 * credential for an hour. Never throws: an unreadable store, a missing key,
 * or a failed request is a typed `unavailable` result the caller reports
 * instead of filling in catalog values as if the provider had said them.
 */
export declare function readAnthropicModelMetadata(options?: {
    fetchImpl?: typeof fetch;
    now?: () => number;
}): Promise<ProviderModelMetadataResult>;
/** Engines whose picker rows can read live provider metadata. */
export declare const LIVE_METADATA_ENGINES: ReadonlySet<string>;
export declare function __resetProviderModelMetadataCache(): void;