kmjones1979

Ampersend TypeScript SDK Tutorial

Workshop Duration: 10 minutes

This tutorial walks through the Ampersend TypeScript SDK for integrating x402 payment capabilities into MCP (Model Context Protocol) applications. The x402 protocol extends HTTP with a standard way for servers to request payment before providing resources, using the 402 "Payment Required" status code. By the end of this tutorial, you'll understand how to build MCP clients that can pay for tools, MCP servers that charge for tools, and proxy servers that add payments to existing MCP infrastructure.

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Table of Contents

kmjones1979

Ampersend Python SDK Tutorial

Workshop Duration: 10 minutes

This tutorial walks through the Ampersend Python SDK for integrating x402 payment capabilities into A2A (Agent-to-Agent) applications. The x402 protocol extends HTTP with a standard way for servers to request payment before providing resources, using the 402 "Payment Required" status code. By the end of this tutorial, you'll understand how to build both buyer (client) and seller (server) agents that can exchange micropayments for AI services.

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Table of Contents

kmjones1979

import * as dotenv from "dotenv";
dotenv.config();
import { ethers, Wallet } from "ethers";
import { config } from "hardhat";
import password from "@inquirer/password";
import { input, confirm, select } from "@inquirer/prompts";

interface AccountInfo {
  address: string;
  wallet: Wallet;

kmjones1979

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";
import "./MentorNFT.sol";

kmjones1979

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

// --- Custom Errors ---
error MentorNFT_ZeroAddressOwner();

kmjones1979

🚀 Stablecoin Challenge - Complete Developer Tutorial 💰

Welcome to the most exciting DeFi adventure! 🎉 Get ready to dive into the world of stablecoins, yield farming, and automated market making!

• Challenge on Github

• Challenge on SpeedRunEthereum

kmjones1979

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

// --- Custom Errors ---

kmjones1979

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.27;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";
import "./MentorNFT.sol";

kmjones1979

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import {FunctionsClient} from "./@chainlink/contracts/src/v0.8/functions/dev/1_0_0/FunctionsClient.sol";
import {ConfirmedOwner} from "./@chainlink/contracts/src/v0.8/shared/access/ConfirmedOwner.sol";
import {FunctionsRequest} from "./@chainlink/contracts/src/v0.8/functions/dev/1_0_0/libraries/FunctionsRequest.sol";

contract FunctionsConsumerExample is FunctionsClient, ConfirmedOwner, ERC721 {
  using FunctionsRequest for FunctionsRequest.Request;

kmjones1979

// This example show how to check if an account is enlisted in the mission
const account = args[0].toLowerCase() // make sure the account is in lowercase
const query_url = args[1] //https://api.studio.thegraph.com/query/37762/mymission/version/latest

// Uncomment to use Graph API Key (for published missions)
//const graphKey = secrets.graphKey

const graphRequest = Functions.makeHttpRequest({
  url: `${query_url}`,
  method: "POST",