COTI MCP Server

import { getDefaultProvider, Contract } from "@coti-io/coti-ethers"; import { ToolAnnotations } from "@modelcontextprotocol/sdk/types.js"; import { getNetwork } from "../shared/account.js"; import { ERC20_ABI } from "../constants/abis.js"; import { z } from "zod"; export const GET_PRIVATE_ERC20_DECIMALS: ToolAnnotations = { title: "Get Private ERC20 Decimals", name: "get_private_erc20_decimals", description: "Get the number of decimals for a private ERC20 token on the COTI blockchain. " + "This is used for checking the number of decimals in this token. " + "Requires token contract address as input. " + "Returns the number of decimals in this contract.", inputSchema: { network: z.enum(['testnet', 'mainnet']).describe("Network to use: 'testnet' or 'mainnet' (required)."), token_address: z.string().describe("ERC20 token contract address on COTI blockchain"), }, }; /** * Checks if the provided arguments are valid for the getPrivateERC20Decimals tool * @param args The arguments to check * @returns True if the arguments are valid, false otherwise */ export function isGetPrivateERC20DecimalsArgs(args: unknown): args is { token_address: string, network: 'testnet' | 'mainnet' } { return ( typeof args === "object" && args !== null && "token_address" in args && typeof (args as { token_address: string }).token_address === "string" && "network" in args && typeof (args as { network: string }).network === "string" ); } /** * Handler for the getPrivateERC20Decimals tool * @param args The arguments for the tool * @returns The tool response */ export async function getPrivateERC20DecimalsHandler(args: any): Promise<any> { if (!isGetPrivateERC20DecimalsArgs(args)) { throw new Error("Invalid arguments for get_private_erc20_decimals"); } const { token_address, network } = args; const results = await performGetPrivateERC20Decimals(token_address, network); return { structuredContent: { name: results.name, symbol: results.symbol, decimals: results.decimals, tokenAddress: results.tokenAddress }, content: [{ type: "text", text: results.formattedText }], isError: false, }; } /** * Performs the getPrivateERC20Decimals tool * @param token_address The token contract address * @param network The network to use ('testnet' or 'mainnet') * @returns An object with decimals information and formatted text */ export async function performGetPrivateERC20Decimals(token_address: string, network: 'testnet' | 'mainnet'): Promise<{ name: string, symbol: string, decimals: number, tokenAddress: string, formattedText: string }> { try { const provider = getDefaultProvider(getNetwork(network)); const tokenContract = new Contract(token_address, ERC20_ABI, provider); const decimals = await tokenContract.decimals(); const name = await tokenContract.name(); const symbol = await tokenContract.symbol(); const formattedText = `Collection: ${name} (${symbol})\nDecimals: ${decimals}\nToken Address: ${token_address}`; return { name, symbol, decimals: Number(decimals), tokenAddress: token_address, formattedText }; } catch (error) { console.error('Error getting private ERC20 decimals:', error); throw new Error(`Failed to get private ERC20 decimals: ${error instanceof Error ? error.message : String(error)}`); } }