Shipping x402 USDC Payments to Base + Solana Mainnet for an MCP Server

Last week, ChainAnalyzer (a multi-chain blockchain AML platform) crossed three milestones in five days: ✅ Merged into awesome-mcp-servers ✅ Earned a AAA score on Glama MCP Directory ✅ Switched x402 from testnet to Base + Solana mainnet via the Coinbase CDP Facilitator This post is a brain-dump of how each piece fits together for anyone building an MCP server with native crypto micropayments. What is x402? x402 is an HTTP 402 micropayment protocol from Coinbase. The flow: Client calls a paid endp