import type { AgentCapabilities } from "@ag-ui/core";
import type { ComputedRef } from "vue";
/**
 * Returns the capabilities declared by the given agent (or the default agent).
 *
 * Capabilities are populated from the runtime `/info` response at connection
 * time. The composable reads them synchronously from the agent instance — there
 * is no separate loading state, but the value will be `undefined` until the
 * runtime handshake completes.
 *
 * @param agentId - Optional agent ID. If omitted, uses the default agent.
 * @returns A computed ref containing the agent's capabilities, or `undefined`
 *          if the agent doesn't declare capabilities.
 */
export declare function useCapabilities(agentId?: string): ComputedRef<AgentCapabilities | undefined>;
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