SEI MCP Server V2

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; import * as services from "../services/index.js"; /** * Registers tools related to the Li.Fi protocol. * @param server The MCP server instance */ export function registerLifiTools(server: McpServer) { /** * Tool to get a Li.Fi cross-chain quote. * This provides an estimation for a swap, including the transaction data * that would be needed for execution. */ server.tool( "get_lifi_quote", "Gets a cross-chain swap quote from Li.Fi, including transaction details.", { fromChainId: z.number().int().describe("The ID of the source chain (e.g., 1 for Ethereum)."), toChainId: z.number().int().describe("The ID of the destination chain (e.g., 1329 for Sei)."), fromTokenAddress: z.string().describe("The address of the token to send from the source chain."), toTokenAddress: z.string().describe("The address of the token to receive on the destination chain."), fromAmount: z.string().describe("The amount of the source token to send."), }, async (params) => { try { const result = await services.getLifiQuote( params.fromChainId, params.toChainId, params.fromTokenAddress, params.toTokenAddress, params.fromAmount ); return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error getting Li.Fi quote: ${errorMessage}` }], isError: true, }; } } ); /** * Tool to get a Li.Fi cross-chain route. * This provides all the routes avalilabe for the swap */ server.tool( "get_lifi_route", "Gets a cross-chain swap route from Li.Fi, including transaction details.", { fromChainId: z.number().int().describe("The ID of the source chain (e.g., 1 for Ethereum)."), toChainId: z.number().int().describe("The ID of the destination chain (e.g., 1329 for Sei)."), fromTokenAddress: z.string().describe("The address of the token to send from the source chain."), toTokenAddress: z.string().describe("The address of the token to receive on the destination chain."), fromAmount: z.string().describe("The amount of the source token to send."), }, async (params) => { try { const result = await services.getLifiRoute( params.fromChainId, params.toChainId, params.fromTokenAddress, params.toTokenAddress, params.fromAmount ); return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error getting Li.Fi quote: ${errorMessage}` }], isError: true, }; } } ); /** * Tool to create and execute a Li.Fi cross-chain swap. * This is a full-service tool that handles getting a route and executing the transaction. */ server.tool( "create_and_execute_lifi_order", "Creates and executes a Li.Fi cross-chain swap, returning the executed route details.", { fromChainId: z.number().int().describe("The ID of the source chain (e.g., 1 for Ethereum)."), toChainId: z.number().int().describe("The ID of the destination chain (e.g., 1329 for Sei)."), fromTokenAddress: z.string().describe("The address of the token to send from the source chain."), toTokenAddress: z.string().describe("The address of the token to receive on the destination chain."), fromAmount: z.string().describe("The amount of the source token to send."), }, async (params) => { try { const result = await services.createLifiOrder( params.fromChainId, params.toChainId, params.fromTokenAddress, params.toTokenAddress, params.fromAmount ); return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error executing Li.Fi order: ${errorMessage}` }], isError: true, }; } } ); /** * Tool to fetch all EVM chains supported by the LI.FI SDK. */ server.tool( "get_lifi_chains", "Fetches all EVM chains supported by the LI.FI SDK.", {}, async () => { try { const result = await services.getLifiChains(); return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error fetching Li.Fi chains: ${errorMessage}` }], isError: true, }; } } ); /** * Tool to fetch details for a specific token on a given chain using lifi sdk. */ server.tool( "get_lifi_token", "Fetches details for a specific token on a given chain using lifi sdk.", { chainId: z.number().int().describe("The ID of the chain where the token exists."), tokenAddress: z.string().describe("The contract address of the token."), }, async (params) => { try { const result = await services.getLifiToken(params.chainId, params.tokenAddress); return { content: [{ type: "text", text: JSON.stringify(result, null, 2) }], }; } catch (error) { const errorMessage = error instanceof Error ? error.message : String(error); return { content: [{ type: "text", text: `Error fetching Li.Fi token details: ${errorMessage}` }], isError: true, }; } } ); }