I Built an Agent That Trades on Bitcoin Lightning. It remembered nothing. So I built a brain.

L402 lets AI agents pay for API calls with Lightning. No credit cards, no OAuth, no subscription plans. An agent gets an invoice, pays it, gets access. It works. And it's growing fast. But every agent I've seen using L402 has the same problem: it forgets everything. An agent finds a transcription API that charges 2,000 sats (~$1.42) per request. Good price, fast response. The agent uses it a dozen times. Then the session ends, and the agent has no record of any of it. Next session, it's back to searching for transcription APIs from scratch. It'll probably find a worse one. Scale that up. An agent managing a real budget, spending millions of sats a week on compute, data, and API access, is flying blind between sessions. No vendor history. No spending patterns. No memory of which endpoints returned errors half the time. That's the gap I built Lightning Memory to fill. What It Does Lightning Memory is an MCP server. Nine tools. Install it, point Claude or any MCP-compatible agent at it, a