/**
 * 0x Swap API V2 (Permit2) — Franklin built-in tools for Base trading.
 *
 * Same posture as the JupiterSwap tools, different chain + aggregator:
 *   - Calls 0x's API directly from this Franklin process (the user is the
 *     first-party caller; we are not a gateway proxy → no ToS violation).
 *   - Embeds BlockRun's affiliate identity in every quote (`swapFeeRecipient`
 *     + `swapFeeBps` + `swapFeeToken`). Fee flows on-chain to BlockRun at
 *     swap settlement — 0x's officially-supported integrator monetization.
 *   - User signs locally with their existing Base/EVM keypair (via @blockrun/
 *     llm's `getOrCreateWallet`); we never custody.
 *
 * Two tools exposed:
 *   - Base0xQuote — indicative price, free, no signing
 *   - Base0xSwap  — full quote → sign Permit2 → submit raw tx → BaseScan link
 *
 * Reference (official 0x example):
 *   https://github.com/0xProject/0x-examples/tree/main/swap-v2-permit2-headless-example
 *
 * Required env:
 *   ZERO_EX_API_KEY  — get one free at https://dashboard.0x.org
 *   BASE_RPC_URL     — optional override; defaults to public Base RPC
 */
import type { CapabilityHandler } from '../agent/types.js';
export declare const base0xQuoteCapability: CapabilityHandler;
export declare const base0xSwapCapability: CapabilityHandler;