import type { ChatCompletionParams, LLMProvider } from '../types/provider/index.js';
/**
 * Fully-resolved capability set: every flag present, no optionals left.
 * What the query runtime branches on after applying the permissive default.
 */
export interface ResolvedProviderCapabilities {
    supportsTools: boolean;
    supportsStreaming: boolean;
    supportsFunctionCalling: boolean;
    supportsVision: boolean;
    supportsDocuments: boolean;
    supportsToolResultImages: boolean;
    supportsToolResultDocuments: boolean;
    maxOutputTokens?: number;
}
/**
 * THE permissive default: a provider that declares nothing is assumed to
 * handle everything — exactly the pre-negotiation behavior, so third-party
 * providers written before `LLMProvider.capabilities` existed keep working
 * without a warning storm. Shipped drivers always declare explicitly.
 */
export declare const PERMISSIVE_PROVIDER_CAPABILITIES: ResolvedProviderCapabilities;
/**
 * Resolve a provider's declared capabilities against the permissive
 * default. Absent declaration ⇒ everything `true`; a partial declaration
 * (e.g. one missing `supportsVision`, added later) fills the gap
 * permissively per field.
 */
export declare function resolveProviderCapabilities(provider: Pick<LLMProvider, 'capabilities'>): ResolvedProviderCapabilities;
/** Require explicit wire support before dispatching a native JSON Schema request. */
export declare function assertNativeStructuredOutputSupported(provider: Pick<LLMProvider, 'id' | 'capabilities'>, params: Pick<ChatCompletionParams, 'responseFormat'>): void;
/** Refuse a hosted search request before dispatch when the route cannot honor it. */
export declare function assertHostedWebSearchSupported(provider: Pick<LLMProvider, 'id' | 'capabilities' | 'supportsHostedWebSearchFor'>, params: Pick<ChatCompletionParams, 'webSearch'> & Partial<Pick<ChatCompletionParams, 'model'>>): void;
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