import type { FlexibleSchema } from "ai";
import type { Approval } from "#approval/definition.js";
import type { InternalToolLabelDefinition, ToolExecuteOptions } from "#tools/definition.js";
import type { JsonValue } from "#shared/json.js";
import type { PreparedToolBehavior } from "#tools/behavior.js";
/**
 * Runtime-owned action metadata attached to one harness-visible tool.
 *
 * `task-control` marks `task_cancel`: it carries no child address of its
 * own — the dispatch step resolves targets through the session task index.
 */
export type HarnessRuntimeActionDefinition = {
    readonly kind: "task-control";
};
/**
 * Unified harness-owned tool definition.
 */
export interface HarnessToolDefinition {
    readonly availableInSubagents?: boolean;
    readonly label?: InternalToolLabelDefinition;
    readonly approvalKey?: (toolInput: Readonly<Record<string, unknown>>) => string;
    readonly behavior?: PreparedToolBehavior;
    readonly description: string;
    readonly execute?: (input: any, options: ToolExecuteOptions) => any;
    /** Optional JSON input substituted when this tool starts its workflow body. */
    readonly executeInput?: (input: unknown) => JsonValue;
    readonly execution?: "background";
    readonly frameworkAction?: "load-skill";
    readonly inputSchema: FlexibleSchema;
    readonly name: string;
    /** Selected agent definition's runtime graph ID; absent for authored workflow tools. */
    readonly nodeId?: string;
    readonly approval?: Approval;
    readonly outputSchema?: FlexibleSchema;
    /**
     * Advertise this tool only to the root session, hiding it from subagent
     * sessions. Set on the injected `agent` self-delegation tool so children
     * cannot delegate recursively. Absent means visible everywhere.
     */
    readonly rootOnly?: boolean;
    readonly runtimeAction?: HarnessRuntimeActionDefinition;
    readonly toModelOutput?: (output: unknown) => unknown;
    /** Present when this tool starts an associated durable workflow. */
    readonly workflowId?: string;
}