/**
 * HTTP provider config shapes.
 *
 * `HttpConfig` is the constructor input for `HttpProvider` (no discriminator).
 * `HttpProviderConfig` is the shape the consumer passes to
 * `ProviderRegistry.create({ type: 'http', ... })` — it extends `HttpConfig`
 * with the `type: 'http'` discriminator for the registry's generic narrowing.
 */
export type HttpDialect = 'openai' | 'anthropic';
export interface HttpConfig {
    /** Base URL of the endpoint (e.g. https://api.openai.com/v1 or http://localhost:11434/v1). */
    baseURL: string;
    /** API key (sent as Authorization: Bearer for openai dialect, x-api-key for anthropic). */
    apiKey?: string;
    /** Protocol dialect for request/response shape. Default: 'openai'. */
    dialect?: HttpDialect;
    /** Optional extra headers. */
    headers?: Record<string, string>;
    /** Default model when chat params don't specify one. */
    model?: string;
    /**
     * Anthropic-dialect constrained tool-input policy. `auto` enables strict
     * tool use for known Claude 4.5+ model identifiers, `on` opts a compatible
     * proxy alias in, and `off` disables it. Default: `auto`.
     */
    strictToolUse?: 'auto' | 'on' | 'off';
    /** Request timeout in ms. Default: 60000. */
    timeout?: number;
}
export interface HttpProviderConfig extends HttpConfig {
    type: 'http';
}
/**
 * Thrown when the server's response shape does not match the declared `dialect`.
 *
 * Fail-fast by design: silent coercion between OpenAI and Anthropic response
 * shapes would corrupt tool-call arguments and content deltas. Diagnostics keep
 * only the endpoint origin and status; query parameters and response samples are
 * deliberately redacted because both may contain credentials.
 */
export declare class DialectMismatchError extends Error {
    readonly dialect: HttpDialect;
    readonly status: number;
    readonly url: string;
    readonly sample: string;
    constructor(dialect: HttpDialect, url: string, status: number, _sample: string);
}
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