import type { PluginInput, ProviderContext } from '@opencode-ai/plugin';
import type { Model, UserMessage } from '@opencode-ai/sdk';
interface ChatHeadersInput {
    sessionID: string;
    model: Model;
    provider: ProviderContext;
    message: UserMessage;
}
interface ChatHeadersOutput {
    headers: Record<string, string>;
}
/** Copilot routing header the hook may set (shared with the v2 bridge in
 * `src/v2/setup.ts` so both hosts stamp the exact same header/value). */
export declare const CHAT_INITIATOR_HEADER_NAME = "x-initiator";
export declare const CHAT_INITIATOR_HEADER_AGENT = "agent";
export declare function __resetInternalMarkerCacheForTesting(): void;
/** Copilot provider ids whose backend distinguishes user- vs
 * agent-initiated requests via the `x-initiator` header. Exported for the
 * v2 `session.model.request` bridge (`src/v2/setup.ts`). */
export declare function isCopilotProvider(providerID: string): boolean;
export declare function createChatHeadersHook(ctx: PluginInput): {
    'chat.headers': (input: ChatHeadersInput, output: ChatHeadersOutput) => Promise<void>;
};
export {};