import type { DecisionError, DecisionPreparedMedia, DecisionState, NeurolinkCredentials } from "../types/index.js";
import { SystemOneDecisionProvider } from "./systemOneDecision.js";
/**
 * Cloudflare Clef — the `decide` inference type only.
 *
 * `@cf/cloudflare/clef` (27B) and `@cf/cloudflare/clef-flash` (9B) answer the
 * same typed `noul` / `choice` / `score` questions as the other decision
 * providers, follow the System One wire, and read images. They are reached
 * through the Workers AI REST API, which wraps every answer in Cloudflare's own
 * `{ result, success, errors }` envelope and puts the model in the URL path.
 *
 * The token and account id are the ones the Cloudflare Workers AI text provider
 * reads (`CLOUDFLARE_API_KEY`, `CLOUDFLARE_ACCOUNT_ID`), so a host that has
 * configured that provider has also configured this one.
 *
 * The Workers AI endpoint ignores text past about 2,048 tokens, far below
 * the documented 64K (hosted service or model: unknown). See `decisionLimits`
 * on the descriptor for the measured figures.
 *
 * @see https://developers.cloudflare.com/workers-ai/models/clef/
 */
export declare class CloudflareClefProvider extends SystemOneDecisionProvider {
    private readonly apiKey;
    private readonly accountId;
    private readonly baseURL;
    constructor(modelName?: string, sdk?: unknown, _region?: string, credentials?: NeurolinkCredentials["cloudflareClef"]);
    protected getDefaultModel(): string;
    protected vendorLabel(): string;
    protected vendorDisplayName(): string;
    protected decisionApiKey(): string;
    protected missingKeyMessage(): string;
    protected missingConfigMessage(): string | undefined;
    /** The model is part of the path, so the endpoint depends on the model asked for. */
    protected decisionEndpoint(model: string): string;
    protected decisionHeaders(): Record<string, string>;
    /**
     * Images travel in their own `images` array, as `data:` URLs, placed before
     * the state by the server. `model` is sent although the path already names
     * it: the API documents it as required, and refuses a body whose `model`
     * differs from the path.
     */
    protected buildDecisionBody(state: DecisionState, questions: Record<string, Record<string, unknown>>, model: string, media?: DecisionPreparedMedia): Record<string, unknown>;
    /** A success is `{ result: { model, answers, usage }, success: true }`. */
    protected readDecisionPayload(payload: unknown): unknown;
    protected parseDecisionError(status: number, payload: unknown, requestId: string | undefined): DecisionError;
    /**
     * `cf-ai-req-id` is on every answer that reached the model, success or
     * refusal. A 401 and a wrong-path 400 never reach it, so they carry only the
     * edge's `cf-ray`.
     */
    protected readRequestId(headers: Headers): string | undefined;
}