Auth for Agents: Let AI Sign Up for Your Product with auth.md — Michael Grinich, WorkOS

This post introduces `auth.md`, an open specification built on OAuth standards, designed to enable AI agents to autonomously register for services. It addresses the limitations of traditional human-centric signup flows (CAPTCHAs, manual form filling) that block agents. The `auth.md` file declares how an agent can prove its identity (e.g., via ID-JAG) and obtain temporary accounts, facilitating agent-driven tool selection and usage. A demo showcases an agent using `auth.md` to register with Cloudflare and deploy an application without human intervention, advocating for payment models that follow usage rather than upfront signup.