xrpl mcp

import { Client, Wallet, xrpToDrops, Amount, AMMCreate } from "xrpl"; import { z } from "zod"; import { server } from "../../server/server.js"; import { getXrplClient } from "../../core/services/clients.js"; import { MAINNET_URL, TESTNET_URL } from "../../core/constants.js"; import { connectedWallet, isConnectedToTestnet } from "../../core/state.js"; server.tool( "amm-create", "Create a new Automated Market Maker (AMM) on the XRP Ledger", { fromSeed: z .string() .optional() .describe( "Optional seed of the wallet to use. If not provided, the connected wallet will be used." ), asset1: z .object({ currency: z .string() .describe("Currency code of the first asset"), issuer: z .string() .optional() .describe( "Issuer address of the first asset (not needed for XRP)" ), value: z .string() .describe("Amount of the first asset to deposit"), }) .describe("First asset to deposit in the AMM's pool"), asset2: z .object({ currency: z .string() .describe("Currency code of the second asset"), issuer: z .string() .optional() .describe( "Issuer address of the second asset (not needed for XRP)" ), value: z .string() .describe("Amount of the second asset to deposit"), }) .describe("Second asset to deposit in the AMM's pool"), tradingFee: z .number() .min(0) .max(1000) .optional() .describe("Trading fee in basis points (0-1000, where 100 = 1%)"), fee: z.string().optional().describe("Transaction fee in XRP"), useTestnet: z .boolean() .optional() .describe( "Whether to use the testnet (true) or mainnet (false). If not provided, uses the network from the connected wallet." ), }, async ({ fromSeed, asset1, asset2, tradingFee, fee, useTestnet }) => { let client: Client | null = null; try { // Determine which network to use const useTestnetNetwork = useTestnet !== undefined ? useTestnet : isConnectedToTestnet; client = await getXrplClient(useTestnetNetwork); // Use provided seed or connected wallet let wallet: Wallet; if (fromSeed) { wallet = Wallet.fromSeed(fromSeed); } else if (connectedWallet) { wallet = connectedWallet; } else { throw new Error( "No wallet connected. Please connect first using connect-to-xrpl tool or provide a fromSeed." ); } // Format amounts for the transaction const formatAmount = (asset: { currency: string; issuer?: string; value: string; }): Amount => { if (asset.currency === "XRP") { return xrpToDrops(asset.value); } else { if (!asset.issuer) { throw new Error( `Issuer must be provided for non-XRP currency ${asset.currency}` ); } return { currency: asset.currency, issuer: asset.issuer, value: asset.value, }; } }; // Create AMMCreate transaction with explicit typing const ammCreateTx: AMMCreate = { TransactionType: "AMMCreate", Account: wallet.address, Amount: formatAmount(asset1), Amount2: formatAmount(asset2), TradingFee: tradingFee !== undefined ? tradingFee : 0, }; if (fee) { ammCreateTx.Fee = fee; } // Submit transaction const prepared = await client.autofill(ammCreateTx); const signed = wallet.sign(prepared); const result = await client.submitAndWait(signed.tx_blob); let status = "unknown"; if (typeof result.result.meta !== "string" && result.result.meta) { status = result.result.meta.TransactionResult === "tesSUCCESS" ? "success" : "failed"; } return { content: [ { type: "text", text: JSON.stringify( { status, hash: result.result.hash, account: wallet.address, asset1, asset2, tradingFee: tradingFee !== undefined ? tradingFee : "Default (0)", network: useTestnetNetwork ? TESTNET_URL : MAINNET_URL, networkType: useTestnetNetwork ? "testnet" : "mainnet", result: result.result, }, null, 2 ), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error creating AMM: ${ error instanceof Error ? error.message : String(error) }`, }, ], }; } finally { if (client) { await client.disconnect(); } } } );