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 Payment Required: Meaning, Uses, and x402 (2026)
What the 402 status code means, why it sat reserved since 1991, when servers send it, and how the x402 protocol finally uses it so AI agents can pay per request.
- 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.
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