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MCP server · Developer Tools

Ampersend SDK

Tooling for building applications with x402 payment capabilities. Supports buyer and seller roles.

Unclaimed Apache-2.0 last commit 6 months ago a2amcplangchainadkdevtoolsx402pythontypescript
64Good

Scored 3 months ago · breakdown

About Ampersend SDK

Ampersend SDK is an MCP server published by edgeandnode in the Developer Tools category: tooling for building applications with x402 payment capabilities. Supports buyer and seller roles. It has been installed 0 times through Conduid.

The repository has 12 stars and 7 forks, with the last commit 6 months ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues (0) before depending on it in production.

Install

Install
npx ampersend-sdk

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

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README

Ampersend SDK

Multi-language SDK for building applications with x402 payment capabilities. Supports both buyer (client) and seller (server) roles with flexible payment verification and authorization patterns.

Looking for examples? See the ampersend-examples repository.

📦 Language Support

🚀 Quick Start

Python

# Install Python 3.13
uv python install 3.13

# Install dependencies
uv sync --frozen --all-packages --group dev

Full Python documentation

TypeScript

# Install dependencies
pnpm install
pnpm build

# Configure environment
cp .env.example .env
# Edit .env with your credentials

# Run MCP proxy server
pnpm --filter ampersend-sdk proxy:dev

# Or run FastMCP example server
pnpm --filter fastmcp-x402-server dev

Full TypeScript documentation

📚 Documentation

Core Concepts

x402 Protocol - Transport-agnostic payment protocol for agent and LLM applications that enables pay-per-request patterns. See x402 specification.

Supported Transports:

  • A2A (Agent-to-Agent) - Transport protocol for agent communication with payment capabilities
  • MCP (Model Context Protocol) - Transport protocol for LLM-tool integration with payment capabilities
  • HTTP - Standard HTTP client with x402 payment capabilities (TypeScript)

Key Components:

  • Treasurer - Authorizes and tracks payments
  • Wallet - Creates and signs payment proofs (EOA and Smart Account support)
  • Client - Initiates requests with payment handling
  • Server - Verifies payments and processes requests

Repository Structure

ampersend-sdk/
├── python/
│   ├── ampersend-sdk/           # Python SDK package
│   └── langchain-ampersend/     # LangChain integration
└── typescript/
    └── packages/
        └── ampersend-sdk/       # TypeScript SDK package

🔧 Prerequisites

Python

  • uv - Dependency management (install)
  • Python 3.13+

TypeScript

  • Node.js 18+
  • pnpm - Package manager

Development

  • Test USDC - For payment testing (Circle faucet)
  • Private Key - Ethereum wallet for signing payments

📄 License

Apache 2.0 - See LICENSE

README mirrored from the source repository 3 months ago. The original is authoritative.

Questions

About Ampersend SDK

How do I install Ampersend SDK?

Run npx ampersend-sdk, then add the server to your MCP client's configuration. Conduid has recorded 0 installs, so the command is known to work with current clients.

Is Ampersend SDK safe to use with an AI agent?

Its trust score is 64 out of 100 (good). It passes 0 of 1 static security checks; the failures are listed above. It has no ConduID identity yet, so agent calls to it are not receipted.

Is Ampersend SDK still maintained?

The last commit was 6 months ago, with 0 open issues. That's long enough that you should check whether the maintainer is responding to issues before depending on it.