ecp.directory

/endpointcontextprotocol

ECP.DIRECTORY · Official open registry of agent-readable sites using Endpoint Context Protocol. Free. Open. Maintained by the ECP Core Team.

Browser request returns HTML

Agent request returns semantic content

Vary header present

FAQ

What is Endpoint Context Protocol (ECP)?

Endpoint Context Protocol is an open standard that lets a website serve clean semantic content to agents from the same URL it already uses for humans. See Docs

Can any website submit?

Yes, as long as your website passes the check above for ECP enabled, it will be submitted and indexed.

Why do I want my site in the index?

As agents increasingly discover sites without human-initiated search, the ECP index gives your site a verified presence in that layer. Submit once at ecp.directory. The index is opt-in, free, and queried directly by model providers and agent frameworks.

How can I make my site ECP enabled?

Easy! It's an open standard, available at endpointcontextprotocol.io. It's about 5 lines of code if you do it yourself, or you can run npx endpointcontext for quick setup.

Can I remove a website from the index?

Absolutely, email removals@ecp.directory