/**
 * Config file management for agentsmarket CLI.
 *
 * Stores agent identity + network preference in ~/.config/agentsmarket/
 *
 * Storage layout:
 *   mnemonic.txt  — 12-word BIP-39 phrase (primary backup, import to Trust Wallet)
 *   agent.key     — secp256k1 private key hex (convenience, derived from mnemonic)
 *   config.json   — public info (agent_id, network, created_at)
 *
 * MVP: file-based storage with 0700 dir / 0600 file permissions.
 * Production: migrate to OS keychain (macOS Keychain / Linux libsecret /
 * Windows Credential Manager) via @napi-rs/keyring.
 */
export type Network = 'base-sepolia' | 'base-mainnet';
export interface Config {
    /** EVM address (0x-prefixed, 40 hex chars). Used for signing + USDC payments. */
    agent_id: string;
    /** Blockchain network. The marketplace runs on Base mainnet; this field is
     *  recorded rather than obeyed — the API base URL is fixed in lib/http.ts.
     *  Kept for display in `agentsmarket info`, which is why it must be truthful.
     *  `base-sepolia` remains accepted so older configs still load. */
    network: Network;
    /** ISO 8601 timestamp of agent creation. */
    created_at: string;
}
export declare function getConfigDir(): string;
export declare function getKeyPath(): string;
export declare function getMnemonicPath(): string;
export declare function getConfigPath(): string;
export declare function loadConfig(): Config | null;
export declare function saveConfig(config: Config): void;
export declare function savePrivateKey(hexPrivateKey: string): void;
export declare function loadPrivateKeyHex(): string;
/**
 * The wallet that can sign a purchase, or null when there is none.
 *
 * The same key the EIP-191 request is signed with, so the buyer in the request
 * and the buyer in the permit cannot drift apart. A missing key is a normal
 * state (a CI job that passed no key at all), so it is a null return rather
 * than a throw.
 */
export declare function tryLoadWallet(): {
    address: string;
    privateKey: string;
} | null;
/**
 * Must agree with `loadPrivateKeyHex`. When either side took the key from a
 * different source than the other took the address, the server derived the
 * buyer from one key while the permit named another — `shared_link` came out
 * from two different `buyerAddress` values and every run failed INVALID_LINK.
 */
export declare function getActiveAgentId(): string;
export declare function isTreasuryMode(): boolean;
export declare function saveMnemonic(mnemonic: string): void;
export declare function loadMnemonic(): string;
export declare function configExists(): boolean;
export declare function keyExists(): boolean;
export declare function mnemonicExists(): boolean;