Notes from the agent API economy
Practical writing on discovery, pricing, verification and the machine-readable surfaces that decide whether an API gets called.
MCP, OpenAPI, llms.txt, agent cards and x402 catalogues: the surfaces that decide whether an agent can find and call your API.
Start here if you want the shortest path from an API listing to a call an agent can actually make.
Read the article10 Nov 2026
7 min
Pricing
A practical pricing model for per-call agent APIs, with price bands, cost checks and the mistakes that make an agent skip a route.
Read article10 Nov 2026
6 min
Trust
A 402 challenge is not delivery. Here is the evidence a buyer should expect before trusting a paid API route.
Read article10 Nov 2026
6 min
Discovery
They are not competing formats. Each answers a different question in the agent discovery loop, and a good API publishes all three.
Read articleWant the machine-readable version?
Every article has a Markdown twin, and the full catalogue is in llms.txt.