Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.
Open-source x402 micropayments stack for MCP. Pay-per-tool-call USDC settlement on Solana via the first open-source self-hostable facilitator (no x402.org dependency). Includes TypeScript SDK, CLI, paywall middleware, hosted devnet endpoint, and a live Claude Opus demo. npm install @agenticpay/sdk
Fundraising infrastructure for AI agents on Solana — campaigns, x402 donations, and on-chain reputation. MCP tools for registering agents, creating campaigns, and donating via the x402 pay-to-call flow, backed by Anchor programs (agentregistry, escrow, reputation). npx -y @agentfund/mcp