xrpl mcp

import { Client, Wallet, EscrowCreate } 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 escrow-create tool server.tool( "escrow-create", "Create an Escrow on the XRP Ledger to hold funds until a condition is met or time passes", { fromSeed: z .string() .optional() .describe( "Optional seed of the wallet (sender) to use. If not provided, the connected wallet will be used." ), amount: z .string() .describe("Amount of XRP, in drops, to hold in escrow"), destination: z .string() .describe("Address of the recipient of the escrowed funds"), destinationTag: z .number() .int() .positive() .optional() .describe( "Optional arbitrary unsigned 32-bit integer tag for the destination." ), condition: z .string() .optional() .describe( "Hex value representing a PREIMAGE-SHA-256 crypto-condition. If provided, escrow can only be finished with the preimage." ), finishAfter: z .number() .int() .positive() .optional() .describe( "Timestamp (seconds since Ripple Epoch) after which the escrow can be finished." ), cancelAfter: z .number() .int() .positive() .optional() .describe( "Timestamp (seconds since Ripple Epoch) after which the escrow can be cancelled." ), 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, amount, destination, destinationTag, condition, finishAfter, cancelAfter, fee, useTestnet, }) => { let client: Client | null = null; try { // Ensure at least one release condition is specified if (!condition && !finishAfter) { throw new Error( "Either condition or finishAfter must be specified for the escrow." ); } // 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." ); } // Create EscrowCreate transaction const escrowCreateTx: EscrowCreate = { TransactionType: "EscrowCreate", Account: wallet.address, Amount: amount, // Amount in drops Destination: destination, }; // Add optional fields if (destinationTag) { escrowCreateTx.DestinationTag = destinationTag; } if (condition) { escrowCreateTx.Condition = condition; } if (finishAfter) { escrowCreateTx.FinishAfter = finishAfter; } if (cancelAfter) { escrowCreateTx.CancelAfter = cancelAfter; } if (fee) { escrowCreateTx.Fee = fee; } // Submit transaction const prepared = await client.autofill(escrowCreateTx); const signed = wallet.sign(prepared); const result = await client.submitAndWait(signed.tx_blob); let status = "unknown"; let offerSequence = -1; if (typeof result.result.meta !== "string" && result.result.meta) { status = result.result.meta.TransactionResult === "tesSUCCESS" ? "success" : "failed"; // Extract OfferSequence from metadata if successful if (status === "success" && result.result.meta.AffectedNodes) { for (const node of result.result.meta.AffectedNodes) { if ( "CreatedNode" in node && node.CreatedNode?.LedgerEntryType === "Escrow" ) { offerSequence = (node.CreatedNode.NewFields as any) ?.Sequence; break; } } } } return { content: [ { type: "text", text: JSON.stringify( { status, hash: result.result.hash, offerSequence: status === "success" && offerSequence !== -1 ? offerSequence : "N/A", account: wallet.address, amount, destination, condition, finishAfter, cancelAfter, network: useTestnetNetwork ? TESTNET_URL : MAINNET_URL, networkType: useTestnetNetwork ? "testnet" : "mainnet", result: result.result, }, null, 2 ), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error creating Escrow: ${ error instanceof Error ? error.message : String(error) }`, }, ], }; } finally { if (client) { await client.disconnect(); } } } );