export type RuntimeErrorCode = 'runtime_not_configured' | 'runtime_unknown' | 'runtime_unavailable' | 'runtime_config_invalid';
export type RuntimeProtocol = 'stream-json' | 'jsonl' | 'acp';
export type RuntimeSessionMode = 'oneshot' | 'persistent' | 'resumable';
export type RuntimeUsageMode = 'none' | 'tokens' | 'tokens-and-cost';
export type RuntimeCollaboration = 'delegated' | 'swarm';
export type RuntimeSkillDelivery = 'prompt' | 'filesystem' | 'native';
export type ExecutionStrategy = 'single' | RuntimeCollaboration;
export type RuntimePermissionMode = 'strict' | 'approve' | 'trusted';
export type RuntimePermissionTierSupport = 'native' | 'approximated' | 'unsupported';
export interface RuntimeCapabilities {
    protocol: RuntimeProtocol;
    session: RuntimeSessionMode;
    native_mcp: boolean;
    native_approvals: boolean;
    steering: boolean;
    cancellation: boolean;
    usage: RuntimeUsageMode;
    collaboration: RuntimeCollaboration[];
    skill_delivery: RuntimeSkillDelivery[];
    permission_tiers: Readonly<Record<RuntimePermissionMode, RuntimePermissionTierSupport>>;
}
export interface RuntimeDescriptor {
    id: string;
    capabilities: RuntimeCapabilities;
}
export interface AgentRuntimeConfig {
    strategy: ExecutionStrategy;
    permission_mode: RuntimePermissionMode;
    profile?: string;
    max_children?: number;
    max_iterations?: number;
    extra?: Record<string, unknown>;
}
export declare class RuntimeSelectionError extends Error {
    readonly code: RuntimeErrorCode;
    readonly runtimeId: string | null;
    constructor(code: RuntimeErrorCode, runtimeId: string | null, message: string);
}