/**
 * @fileoverview The not-found answer for a DOI or prefix Crossref holds nothing for, branched on
 * which registration agency the DOI registry says holds it. A DOI another agency registered
 * (DataCite, JaLC, mEDRA, …) is valid and simply absent from Crossref, a DOI no agency registered
 * is mistyped or invented, and the two call for opposite next moves; without the registry's
 * answer both get the same advice. The agency is named in the message and the hint as well as
 * on `data.registrationAgency`, since `error.data` never reaches a client that reads only
 * `content[]`. When the registry gives no readable answer, the message and hint are exactly the
 * ones the tool gave before the lookup existed.
 * @module mcp-server/tools/registration-agency
 */
import type { RegistrationLookup } from '../../services/crossref/crossref-service.js';
/** What the throw site passes to `ctx.fail`: the message, and the fields to spread into `data`. */
export type NotFoundDetail = {
    message: string;
    data: {
        registrationAgency?: string;
        recovery?: {
            hint: string;
        };
    };
};
/**
 * Build the not-found message, hint, and agency for one registry answer. `message` and `recovery`
 * are the tool's own not-found text and declared recovery: the message leads every branch, and an
 * absent `data.recovery` leaves the declared recovery as the hint the framework sends.
 */
export declare function notFoundDetail(args: {
    subject: 'doi' | 'prefix';
    message: string;
    recovery: string;
    lookup: RegistrationLookup;
}): NotFoundDetail;
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