/**
 * SearchApi.io Diagnostics Capability.
 *
 * Probes SearchApi connectivity with a single, non-destructive GET
 * against `/api/v1/me` — the account/subscription metadata endpoint,
 * NOT a search, so the probe costs no search credit. The doctor command
 * can therefore verify a credential authenticates without consuming a
 * paid request. SearchApi has no `search_depth`-style knob, so no probe
 * params are sent.
 *
 * The probe performs exactly ONE attempt. Shared execution owns the
 * retry policy; this transport never retries. The doctor command
 * catches the throw on failure and records a redacted error entry.
 *
 * When `options.probe` is false, `invoke` resolves immediately without
 * touching the network — the doctor command skips probing unconfigured
 * Providers (passing `probe: false`) before reaching this Capability.
 *
 * Boundary rules (ARCHITECTURE.md §2):
 *   - May import the diagnostics capability contract, Adapter-local
 *     credentials, Adapter-local quota transport, and normalized errors.
 *   - Must NOT import command presentation or another Provider's Adapter.
 */
import type { DiagnosticsCapability } from "../../capabilities/diagnostics.js";
import { type SearchApiTransportDeps } from "./client.js";
/**
 * Options for the SearchApi.io DiagnosticsCapability. The API key is
 * resolved from `env`; transport dependencies (`fetch`, timers) are
 * injectable for deterministic tests through the unified `transport`
 * seam.
 */
export interface SearchApiDiagnosticsCapabilityOptions {
    readonly env: NodeJS.ProcessEnv;
    readonly transport?: SearchApiTransportDeps;
}
/**
 * Build the SearchApi.io DiagnosticsCapability. The probe performs ONE
 * non-destructive `/api/v1/me` request — the cheapest credible probe
 * (it authenticates the Bearer header without spending a search
 * credit). Shared execution owns the retry policy; this transport
 * performs exactly one attempt per invocation.
 *
 * When `options.probe` is false, `invoke` resolves immediately without
 * touching the network — the doctor command skips probing unconfigured
 * Providers before reaching this Capability.
 */
export declare function createSearchApiDiagnosticsCapability(options: SearchApiDiagnosticsCapabilityOptions): DiagnosticsCapability;
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