import type { ThinkingLevel } from "@ch1nyzzz/pi-ai";
import type { EvoCapabilityResourceUsage, EvoCapabilityService } from "./service.ts";
export interface EvoSpawnAgentRequest {
    model: string;
    prompt: string;
    maxOutputTokens: number;
    tools: string[];
    reasoning?: ThinkingLevel;
}
export interface EvoSpawnAgentHostResult {
    /** Complete JSON-safe run result. The broker persists this value in its audit log. */
    result: unknown;
    /** Aggregate usage across every model turn in the spawned run. */
    usage: EvoCapabilityResourceUsage;
}
export interface EvoSpawnAgentHostRunOptions {
    signal: AbortSignal;
}
/**
 * Trusted host adapter for creating one isolated child-agent run.
 *
 * TModel is an opaque host-only resolved-model handle. It is never serialized or
 * returned to the sandbox. The adapter must not place credentials in `result`,
 * must disable Evo/extensions in the child, and must expose only `request.tools`.
 */
export interface EvoRawSpawnAgentHost<TModel = unknown> {
    resolveModel(route: string): TModel | undefined;
    /**
     * Return a deterministic conservative bound for the entire multi-turn run,
     * including host prompt/tool-schema overhead and the host's fixed turn limit.
     */
    estimateReservation(model: TModel, request: EvoSpawnAgentRequest): EvoCapabilityResourceUsage;
    /** Enforce maxOutputTokens as an aggregate run limit and honor options.signal. */
    runAgent(model: TModel, request: EvoSpawnAgentRequest, options: EvoSpawnAgentHostRunOptions): Promise<EvoSpawnAgentHostResult>;
}
export declare function createSpawnAgentCapabilityService<TModel>(host: EvoRawSpawnAgentHost<TModel>): EvoCapabilityService;
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