/**
 * Express middleware: append SLICC's standard RFC 8288 `Link` header set to
 * every local `/api/*` response that describes a SLICC capability. Mirrors
 * `applySliccLinks` in the cloudflare-worker so any SLICC HTTP surface
 * advertises the same discoverable capabilities.
 *
 * Skipped for `/api/fetch-proxy`: that endpoint is a transparent CORS-bypass
 * relay, so injecting localhost discovery rels there would pollute downstream
 * `discover` consumers with bogus self-referential links. Also bails out if
 * an earlier middleware already flushed response headers.
 */
import type { NextFunction, Request, Response } from 'express';
/**
 * Returns Express middleware that appends Link entries on every `/api/*`
 * response except `/api/fetch-proxy` (a transparent relay). Uses `res.append`
 * so existing Link headers survive intact.
 */
export declare function sliccLinksMiddleware(): (req: Request, res: Response, next: NextFunction) => void;
/**
 * Build the `GET /api` descriptor — a minimal JSON catalog of localhost
 * endpoints. Mirrors what the cloudflare-worker's `/.well-known/api-catalog`
 * does for the public surface, but scoped to the local CLI server.
 */
export declare function buildLocalApiDescriptor(host: string): unknown;