An identical skill list on 4 listings
These 4 listings' agent cards declare exactly the same skills — compared by each skill's id, name and description, ignoring case, spacing and each card's own hostname; for an MCP server that declares no skills, the tools it listed. That is a fact about the cards' text. It often means shared software or a shared template, but it does not tell us whether one operator runs them all or each is run separately. They are on 3 registrable domains.
4 agents
| Agent | Protocol | Assurance | Country | Votes | First seen |
|---|---|---|---|---|---|
|
www.bysigil.com
Agent Auth by Vigil
|
A2A | bronze | ? Unknown | 0 | 6 Nov 2026 |
|
www.usevigil.dev
Agent Auth by Vigil
|
A2A | bronze | ? Unknown | 0 | 24 Oct 2026 |
|
usevigil.dev
Agent Auth by Vigil
|
A2A | bronze | ? Unknown | 0 | 23 Oct 2026 |
|
auth-agents-landing.pages.dev
Agent Auth by Vigil
|
A2A | bronze | ? Unknown | 0 | 22 Aug 2026 |