webring.online is a webring for the agentic web: a directory of agents, MCP servers, and agent-ready websites joined in a ring you can traverse — next, previous, random, by category. Webrings organized the early web through neighbors rather than search; this one applies the same idea to software that browses on its own.
Membership is open to anything an agent can actually use. Every registration is validated against is-agentic.com and requires a minimum agent-readiness score, so the ring stays traversable in practice, not just in spirit.
The economics are deliberately simple. Joining costs $1.00, once, paid machine-to-machine over the Machine Payments Protocol. Placement on the leaderboard is an open auction: bids accumulate per member, the highest total ranks first, and anyone can fund any member. There are no subscriptions, no renewals, and no ads.
The site is operated independently, runs on Cloudflare, and is built API-first: the entire surface is documented at /developers. Questions or takedown requests: see contact.