/**
 * @fileoverview chainweb_spv_proof - fetch an SPV proof for a cross-chain tx.
 *
 * Calls `POST /chain/<source>/pact/spv` with `{ requestKey, targetChainId }`.
 * The proof is a base64 string passed through to `chainweb_continue_pact`.
 *
 * When the proof is not yet ready (tx still in mempool or awaiting cut
 * confirmation), chainweb responds with a short status string. We surface
 * that as `ready: false` — callers poll, they do not treat it as an error.
 */
import { z } from 'zod';
import type { ChainwebClient } from '../client/fetch.js';
export declare const SpvProofInputShape: {
    sourceChainId: z.ZodString;
    targetChainId: z.ZodString;
    requestKey: z.ZodString;
    timeoutMs: z.ZodDefault<z.ZodNumber>;
};
export declare const SpvProofInputSchema: z.ZodObject<{
    sourceChainId: z.ZodString;
    targetChainId: z.ZodString;
    requestKey: z.ZodString;
    timeoutMs: z.ZodDefault<z.ZodNumber>;
}, z.core.$strip>;
export interface SpvProofResult {
    ready: boolean;
    proof?: string;
    message?: string;
    sourceChainId: string;
    targetChainId: string;
}
export interface SpvProofToolConfig {
    client: ChainwebClient;
}
export declare function createSpvProofTool(config: SpvProofToolConfig): (args: unknown) => Promise<{
    content: SpvProofResult[];
}>;
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