/**
 * load_skill tool: loads a skill's full instructions into the agent's
 * active context.
 *
 * The skill body is read from the SkillRegistry, preprocessed (variable
 * substitution, shell commands, scripts), and pushed to the skill buffer.
 * The skill buffer is injected into ephemeral context via transformContext
 * on every subsequent LLM call within the current agentic loop.
 *
 * References:
 *   - docs/cortex/skill-system.md
 *   - docs/cortex/plans/phase-4-sub-agents-and-skills.md
 */
import { Type, type Static } from 'typebox';
import type { SkillRegistry } from './skill-registry.js';
import type { LoadedSkill } from './types.js';
export declare const LoadSkillParams: Type.TObject<{
    name: Type.TString;
    arguments: Type.TOptional<Type.TString>;
}>;
export type LoadSkillParamsType = Static<typeof LoadSkillParams>;
export declare const LOAD_SKILL_TOOL_NAME = "load_skill";
export interface LoadSkillToolConfig {
    /** The skill registry to load skills from. */
    registry: SkillRegistry;
    /** Build the visible skills summary for the tool description. */
    getAvailableSkillsSummary?: () => string;
    /** The skill buffer to push loaded skills into. */
    getSkillBuffer: () => LoadedSkill[];
    /** Push a loaded skill to the buffer (handles deduplication). */
    pushToSkillBuffer: (skill: LoadedSkill) => void;
}
/**
 * Create the load_skill tool.
 *
 * Returns a Cortex-native tool. CortexAgent adapts it to pi-agent-core's
 * execute signature when synchronizing the tool inventory.
 * The tool description includes the available skills summary, which
 * updates when skills are added or removed from the registry.
 */
export declare function createLoadSkillTool(config: LoadSkillToolConfig): {
    name: string;
    description: string;
    parameters: typeof LoadSkillParams;
    execute: (args: unknown) => Promise<unknown>;
};
/**
 * Rebuild the load_skill tool's description with the current available
 * skills summary. Called when skills are added or removed.
 *
 * Returns a function that produces the updated description string.
 */
export declare function buildLoadSkillDescription(registry: SkillRegistry, availableSkillsSummary?: string): string;
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