/**
 * PubMed Diagnostics Capability.
 *
 * Keyless bounded probe (DESIGN D2 round-3 ruling): doctor probes
 * every always-configured science supplier, so the PubMed probe is ONE
 * minimal keyless wire call — an esearch with `retmax=1` (the cheapest
 * bounded eutils call; arXiv `max_results=1` precedent). Never a full
 * search and never an efetch. When `diagOptions.probe` is false,
 * `invoke` resolves immediately without touching the network.
 */
import type { DiagnosticsCapability } from "../../capabilities/diagnostics.js";
import { type PubmedTransportDeps } from "./client.js";
export interface PubmedDiagnosticsCapabilityOptions {
    readonly env: NodeJS.ProcessEnv;
    readonly transport?: PubmedTransportDeps;
}
export declare function createPubmedDiagnosticsCapability(options: PubmedDiagnosticsCapabilityOptions): DiagnosticsCapability;
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