import { getDefaultProvider, Wallet, Contract } from "@coti-io/coti-ethers";
import { ToolAnnotations } from "@modelcontextprotocol/sdk/types.js";
import { getCurrentAccountKeys, 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: {
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 } {
return (
typeof args === "object" &&
args !== null &&
"token_address" in args &&
typeof (args as { token_address: string }).token_address === "string"
);
}
/**
* Handler for the getPrivateERC20Decimals tool
* @param args The arguments for the tool
* @returns The tool response
*/
export async function getPrivateERC20DecimalsHandler(args: Record<string, unknown> | undefined): Promise<any> {
if (!isGetPrivateERC20DecimalsArgs(args)) {
throw new Error("Invalid arguments for get_private_erc20_decimals");
}
const { token_address } = args;
const results = await performGetPrivateERC20Decimals(token_address);
return {
content: [{ type: "text", text: results }],
isError: false,
};
}
/**
* Performs the getPrivateERC20Decimals tool
* @param token_address The token contract address
* @returns The number of decimals in this contract
*/
export async function performGetPrivateERC20Decimals(token_address: string) {
try {
const provider = getDefaultProvider(getNetwork());
const currentAccountKeys = getCurrentAccountKeys();
const wallet = new Wallet(currentAccountKeys.privateKey, provider);
wallet.setAesKey(currentAccountKeys.aesKey);
const tokenContract = new Contract(token_address, ERC20_ABI, wallet);
const decimals = await tokenContract.decimals();
const name = await tokenContract.name();
const symbol = await tokenContract.symbol();
return `Collection: ${name} (${symbol})\nDecimals: ${decimals}\nToken Address: ${token_address}`;
} 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)}`);
}
}
