COTI MCP Server

import { ToolAnnotations } from "@modelcontextprotocol/sdk/types.js"; import { getNetwork } from "../shared/account.js"; import { Contract, getDefaultProvider, Wallet } from "@coti-io/coti-ethers"; import { ERC721_ABI } from "../constants/abis.js"; import { z } from "zod"; export const SET_PRIVATE_ERC721_APPROVAL_FOR_ALL: ToolAnnotations = { title: "Set Private ERC721 Approval For All", name: "set_private_erc721_approval_for_all", description: "Approve or revoke an operator to transfer all private ERC721 NFT tokens on the COTI blockchain. " + "This allows the operator to transfer any NFT owned by the caller in this collection. " + "Requires token contract address, operator address, and approval status as input. " + "Returns the transaction hash upon successful approval setting.", inputSchema: { private_key: z.string().describe("Private key of the account (tracked by AI from previous operations)"), aes_key: z.string().optional().describe("AES key for private transactions (tracked by AI). Required for private operations."), network: z.enum(['testnet', 'mainnet']).describe("Network to use: 'testnet' or 'mainnet' (required)."), token_address: z.string().describe("ERC721 token contract address on COTI blockchain"), operator_address: z.string().describe("Address to approve as operator, e.g., 0x0D7C5C1DA069fd7C1fAFBeb922482B2C7B15D273"), approved: z.boolean().describe("Whether to approve (true) or revoke (false) the operator"), gas_limit: z.string().optional().describe("Optional gas limit for the transaction"), }, }; /** * Checks if the provided arguments are valid for the set_private_erc721_approval_for_all tool. * @param args The arguments to validate * @returns true if the arguments are valid, false otherwise */ export function isSetPrivateERC721ApprovalForAllArgs( args: unknown ): args is { token_address: string; operator_address: string; approved: boolean; gas_limit?: string; private_key?: string; aes_key?: string; network: 'testnet' | 'mainnet' } { return ( typeof args === "object" && args !== null && "token_address" in args && typeof (args as { token_address: string }).token_address === "string" && "operator_address" in args && typeof (args as { operator_address: string }).operator_address === "string" && "approved" in args && typeof (args as { approved: boolean }).approved === "boolean" && (!("gas_limit" in args) || typeof (args as { gas_limit?: string }).gas_limit === "string" || (args as { gas_limit?: string }).gas_limit === undefined) ); } /** * Handler for the setPrivateERC721ApprovalForAll tool * @param args The arguments for the tool * @returns The tool response */ export async function setPrivateERC721ApprovalForAllHandler(args: any): Promise<any> { if (!isSetPrivateERC721ApprovalForAllArgs(args)) { throw new Error("Invalid arguments for set_private_erc721_approval_for_all"); } const { token_address, operator_address, approved, gas_limit, network, private_key, aes_key } = args; if (!private_key || !aes_key) { throw new Error("private_key and aes_key are required"); } const results = await performSetPrivateERC721ApprovalForAll(private_key, aes_key, token_address, operator_address, approved, network, gas_limit); return { structuredContent: { transactionHash: results.transactionHash, tokenAddress: results.tokenAddress, tokenName: results.tokenName, tokenSymbol: results.tokenSymbol, operatorAddress: results.operatorAddress, approved: results.approved, action: results.action, owner: results.owner, gasLimit: results.gasLimit }, content: [{ type: "text", text: results.formattedText }], isError: false, }; } /** * Sets approval for an operator to transfer all private ERC721 NFT tokens * @param token_address The address of the ERC721 token contract * @param operator_address The address to approve as operator * @param approved Whether to approve or revoke the operator * @param gas_limit Optional gas limit for the transaction * @returns An object with transaction information and formatted text */ export async function performSetPrivateERC721ApprovalForAll(private_key: string, aes_key: string, token_address: string, operator_address: string, approved: boolean, network: 'testnet' | 'mainnet', gas_limit?: string): Promise<{ transactionHash: string, tokenAddress: string, tokenName: string, tokenSymbol: string, operatorAddress: string, approved: boolean, action: string, owner: string, gasLimit?: string, formattedText: string }> { try { const provider = getDefaultProvider(getNetwork(network)); const wallet = new Wallet(private_key, provider); wallet.setAesKey(aes_key); const tokenContract = new Contract(token_address, ERC721_ABI, wallet); const name = await tokenContract.name(); const symbol = await tokenContract.symbol(); // Prepare transaction options const options: { gasLimit?: number } = {}; if (gas_limit) { options.gasLimit = parseInt(gas_limit); } // Execute the setApprovalForAll transaction const tx = await tokenContract.setApprovalForAll(operator_address, approved, options); const receipt = await tx.wait(); const action = approved ? "approved" : "revoked approval for"; const formattedText = `Successfully ${action} ${operator_address} to manage all your NFTs from ${name} (${symbol}).\nTransaction hash: ${receipt.hash}`; return { transactionHash: receipt.hash, tokenAddress: token_address, tokenName: name, tokenSymbol: symbol, operatorAddress: operator_address, approved, action, owner: wallet.address, gasLimit: gas_limit, formattedText }; } catch (error) { console.error('Error setting private ERC721 approval for all:', error); throw new Error(`Failed to set private ERC721 approval for all: ${error instanceof Error ? error.message : String(error)}`); } }