6 articles
How the traffic-light model for AI agent spending limits keeps agents autonomous and owners in control. No lost sleep required.
115M x402 transactions. $477M in agent GDP. Stripe, Visa, and OpenAI are in. The agent economy is here — and the stack is three layers deep.
A $47K agent bill in 11 days. A $12K Kubernetes spiral. Real incidents, real root causes, and the spending controls that would have prevented each one.
93% of agent projects use shared API keys with no per-agent identity or revocation. Here's why that model fails and what replaces it.
MCP standardizes how AI agents find and use tools. But what happens when a tool costs money? Here's how MCP and payment protocols work together.
HTTP 402 sat unused for 26 years. x402 activates it so AI agents can pay for APIs mid-request. Here's how it works and how to use it.