import { type AgentTool, type StreamFn } from "@ch1nyzzz/pi-agent-core";
import { type Api, type Model } from "@ch1nyzzz/pi-ai/compat";
import type { ModelRegistry } from "@ch1nyzzz/pi-coding-agent";
import type { EvoRawSpawnAgentHost } from "./spawn-agent.ts";
export type EvoSpawnAgentRunStatus = "completed" | "length" | "output-limit" | "turn-limit";
export interface EvoSpawnAgentRunResult {
    schemaVersion: 1;
    status: EvoSpawnAgentRunStatus;
    model: {
        provider: string;
        id: string;
    };
    turns: number;
    stopReason: string;
    messages: unknown[];
}
export interface EvoModelRegistrySpawnAgentHostOptions {
    modelRegistry: Pick<ModelRegistry, "find" | "getApiKeyAndHeaders">;
    /** Trusted, pre-constructed tools. No extension or resource loader is consulted. */
    tools: readonly AgentTool[];
    /** Fixed host prompt. It is sent to the model but never returned to the component. */
    systemPrompt: string;
    /** Hard maximum number of provider turns in one spawned run. */
    maxTurns: number;
    /** Hard byte limit for the JSON transcript returned to the component. */
    maxTranscriptBytes?: number;
    /** Injectable provider stream for focused tests. Defaults to pi-ai streamSimple. */
    streamFn?: StreamFn;
}
export declare function createModelRegistrySpawnAgentHost(options: EvoModelRegistrySpawnAgentHostOptions): EvoRawSpawnAgentHost<Model<Api>>;
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