/**
 * Category of one external source an answered agent message touched.
 *
 * -   `integration` is a third-party service reached through an integration, for example Gmail.
 * -   `website` is a concrete web address the agent fetched or browsed.
 * -   `search` is a lookup the agent ran against a web search engine.
 *
 * @private internal type of the agent-message runtime
 */
export type AgentMessageTouchedExternalSourceKind = 'integration' | 'website' | 'search';
/**
 * One source outside the agent itself which answering a single message viewed or edited.
 *
 * Everything the agent does inside its own folder stays internal and is never described here;
 * this records only the reach beyond it, so a chat can tell which outside services and websites
 * one answer really involved.
 *
 * Note: [🚉] This is fully serializable as JSON
 *
 * @private internal type of the agent-message runtime
 */
export type AgentMessageTouchedExternalSource = {
    /**
     * Category of the touched source.
     */
    readonly kind: AgentMessageTouchedExternalSourceKind;
    /**
     * User-facing name of the source, for example `Gmail`, `example.com` or the search query.
     */
    readonly name: string;
    /**
     * Address of the source, when the touch names a concrete one.
     */
    readonly url?: string;
};
/**
 * Validates one already-parsed JSON value as a touched external source.
 *
 * @param value - Raw serialized source.
 * @returns The typed source, or `null` when the value does not match the expected shape, so
 * consumers can silently skip foreign or malformed entries.
 *
 * @private internal utility of the agent-message runtime
 */
export declare function normalizeAgentMessageTouchedExternalSource(value: unknown): AgentMessageTouchedExternalSource | null;