xrpl mcp

import { Client, Wallet, PaymentChannelFund } from "xrpl"; import * as xrpl 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"; // Register payment-channel-fund tool server.tool( "payment-channel-fund", "Add additional XRP to an existing Payment Channel", { fromSeed: z .string() .optional() .describe( "Optional seed of the wallet (sender/source) funding the channel. If not provided, the connected wallet will be used." ), channel: z .string() .describe("The ID of the Payment Channel to add funds to."), amount: z .string() .describe("Amount of XRP, in drops, to add to the channel."), expiration: z .number() .int() .positive() .optional() .describe( "Optional: New expiration time (seconds since Ripple Epoch) for the channel. Must be later than the existing expiration." ), 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, channel, amount, expiration, 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 (must be channel source) 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." ); } // Create PaymentChannelFund transaction const channelFundTx: PaymentChannelFund = { TransactionType: "PaymentChannelFund", Account: wallet.address, // Must be the source of the channel Channel: channel, // Required channel ID Amount: amount, // Required amount in drops to add }; // Add optional expiration if (expiration) { channelFundTx.Expiration = expiration; } if (fee) { channelFundTx.Fee = fee; } // Submit transaction const prepared = await client.autofill(channelFundTx); 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, channel, fundedAmount: amount, newExpiration: expiration, network: useTestnetNetwork ? TESTNET_URL : MAINNET_URL, networkType: useTestnetNetwork ? "testnet" : "mainnet", result: result.result, }, null, 2 ), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error funding Payment Channel: ${ error instanceof Error ? error.message : String(error) }`, }, ], }; } finally { if (client) { await client.disconnect(); } } } );