import type { ActionSchema, AgentRelayActionDescriptor, JsonSchemaLiteObject } from '@agent-relay/sdk/actions';
import { z } from 'zod';
/**
 * Adapters between the JSON-schema-lite action schema format used by the Agent
 * Relay actions registry and the zod schemas the MCP SDK expects for tool input
 * validation. Also handles serializing descriptors for the `list_actions` tool.
 */
export declare function isSchemaObject(schema: ActionSchema | undefined): schema is JsonSchemaLiteObject;
/** Convert a JSON-schema-lite node into an equivalent zod type. */
export declare function zodFromJsonSchema(schema: ActionSchema | undefined): z.ZodTypeAny;
/** Build the MCP tool `inputSchema` (a zod shape) from an action input schema. */
export declare function actionToolInputSchema(schema: ActionSchema | undefined): Record<string, z.ZodTypeAny>;
/**
 * Normalize raw MCP tool args into the shape the action handler expects: object
 * schemas pass through, while scalar/opaque schemas unwrap the `{ input }` envelope.
 */
export declare function actionInvocationInput(descriptor: AgentRelayActionDescriptor, args: unknown): unknown;
/** Project an action descriptor into a JSON-serializable form for `list_actions`. */
export declare function serializableActionDescriptor(descriptor: AgentRelayActionDescriptor): Record<string, unknown>;
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