/**
 * A2A Agent Card consumption — fetch + validate a remote card and map it
 * into the bespoke federation registry so A2A peers appear in federation
 * discovery. Cards only (no A2A Tasks/messaging in this iteration).
 */
import type { DiscoveryService } from '../domain/services/discovery-service.js';
import type { FederationNode } from '../domain/entities/federation-node.js';
import { type A2AAgentCard } from './agent-card.js';
export interface FetchAgentCardOptions {
    /** Injectable fetch for tests / restricted environments. Default: globalThis.fetch. */
    readonly fetchImpl?: typeof fetch;
    readonly timeoutMs?: number;
    /** Response size cap in bytes (defense against decompression floods). Default 256 KiB. */
    readonly maxBytes?: number;
}
export interface FetchAgentCardResult {
    readonly card: A2AAgentCard;
    readonly sourceUrl: string;
}
/**
 * Resolve the card URL: a bare base URL (`https://host[:port]` or a path-less
 * URL) gets the A2A well-known path appended; anything already pointing at a
 * JSON document is used as-is.
 */
export declare function resolveAgentCardUrl(baseOrCardUrl: string): string;
/** Fetch and structurally validate a remote A2A Agent Card. */
export declare function fetchAgentCard(baseOrCardUrl: string, options?: FetchAgentCardOptions): Promise<FetchAgentCardResult>;
/**
 * Fetch a remote Agent Card and register the peer in federation discovery.
 * The peer enters at TrustLevel.UNTRUSTED (see fromAgentCard) — the card is
 * self-asserted metadata, and trust is earned through the normal handshake.
 */
export declare function consumeAgentCard(discovery: DiscoveryService, baseOrCardUrl: string, options?: FetchAgentCardOptions): Promise<FederationNode>;
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