Topic
X402
3 posts on x402 — guides and lab notes from real runs on hardware we own. New posts land here automatically. Start anywhere, or grab the copy-paste prompts that ship with them.
- 5 min read
HTTP 402: the payment status code the web ignored for 33 years
402 Payment Required has been in the HTTP spec since 1991. Reserved. Unused. x402 finally shipped the client half. Here is why that matters now.
- 5 min read
Why API keys break for autonomous AI agents
Stripe doesn't ship to LLMs. Every vendor signup form assumes a human at the door. Here is what changes when wallets become the access primitive.
- 4 min read
I built a memory API that AI agents can pay for
An LLM just paid me $0.001 to remember something. The agent has no account, no API key, no credit card. It just signs a USDC transfer and gets back a 200.
The AI agent build notes
Real costs, real tools, no fluff. M-F when I ship, publish, or learn something worth sending.