transfer.ts•1.21 kB
import { FastMCP } from "fastmcp";
import { Address, encodeFunctionData, parseUnits } from "viem";
import { z } from "zod";
import erc20Abi from "../erc20-abi.js";
export function registerTransferTools(server: FastMCP): void {
server.addTool({
name: "prepare-transfer",
description: "Prepare for transfering ERC20 token",
parameters: z.object({
tokenAddress: z.string().startsWith("0x"),
tokenDecimal: z.coerce.number(),
to: z.string().startsWith("0x"),
amount: z.coerce.string(),
}),
execute: async (args) => {
const tokenAddress = args.tokenAddress as Address;
const tokenDecimal = args.tokenDecimal;
const to = args.to as Address;
const amount = args.amount;
const data = encodeFunctionData({
abi: erc20Abi,
functionName: 'transfer',
args: [
to,
parseUnits(amount, tokenDecimal)
]
})
return {
content: [
{
type: "text",
text: JSON.stringify({
prepareForAction: "send-transaction",
address: tokenAddress,
data,
})
}
]
}
},
});
};