Ag402 is the payment layer for Coinbase's x402 protocol. Wrap any API or MCP server with a paywall in one command (ag402 serve), or let your AI agent auto-pay for paid APIs (ag402 run). Zero code changes for both buyers and sellers. Solana USDC, ~0.5s settlement, non-custodial, 648+ tests, MIT licensed. Works with Claude Code, Cursor, OpenClaw, LangChain, AutoGen, CrewAI out of the box.
Not monetized yet
Turn ag402-mcp’s tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.
Install ag402-mcp
For anyone using ag402-mcp — no Lulu account needed# stdio server — install per the repository README: https://github.com/aethercore-dev/ag402
Real-time weather for any city, built on the lulu-ads widget gallery. First-party, free forever.
View server →FAQ
ag402-mcp installs from source — follow the repository README.
Unrated out of 100, computed from cross-registry traction signals (installs, stars, registry presence) — never influenced by sponsorship.
Similar servers
Works well together
Your server?
This is for the person who owns ag402-mcp — adds Lulu Ads to your own code. Not the install steps above, those are for your users.
Copies a ready prompt: your coding agent installs the lulu-ads SDK, wires the slot, and applies the widget design guide.
or set up manually at getlulu.dev/publishers
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Managed hosting with monetization built in — waitlist.
[](https://getlulu.dev/mcps/ag402-mcp)