import type { UnsignedTx } from "../types/index.js";
/**
 * Recursively assign handles to `tx` and every node in its `.next` chain.
 * Returns a new tx tree with `handle` populated on each node.
 *
 * Each handle stores ONLY the one tx node it names — not the full chain.
 * The agent must call `send_transaction` once per handle, walking the chain
 * explicitly. This makes every signature an independent, auditable event.
 */
export declare function issueHandles(tx: UnsignedTx): UnsignedTx;
/**
 * Retrieve the tx named by `handle`, or throw if unknown/expired. Does NOT
 * delete the entry — we need retry-on-device-disconnect to work, so the handle
 * stays valid until either:
 *   (a) the tx is successfully submitted to the relay (caller invokes
 *       `retireHandle` after the WalletConnect request resolves), or
 *   (b) the TTL expires.
 * Callers must call `retireHandle(handle)` on successful submission so replays
 * fail loudly instead of silently re-submitting the same payload.
 */
export declare function consumeHandle(handle: string): UnsignedTx;
/**
 * Mark a handle as used. Called after the tx has been successfully submitted
 * so the same handle cannot replay the submission. Safe to call on a handle
 * that was already pruned.
 */
export declare function retireHandle(handle: string): void;
/** Test-only: true if `handle` is still active (not retired, not expired). */
export declare function hasHandle(handle: string): boolean;