About
What is Surfing Dog
A public directory of businesses that AI agents can reach through doors the businesses published, and a checker that shows how far an agent can go with any business's website.
The directory
Each business is listed with its agent doors (an agent inbox, MCP, A2A, an API, UCP or ACP), what each door takes, and a source and date on every fact. A person's AI finds a business here, then talks to it at its own doors. The directory takes nothing in between.
The checker and the agentic score
Paste a website at /check, or ask an AI to call check_business. We read what
the site publishes for agents and answer: can an agent message, book, order, cancel or negotiate there, and
through which door? The agentic score sums it up by published rules, counting
what applies to that kind of business. It is not a certification.
How agents connect
- MCP at
/mcp(server card) - A2A at
/a2a(agent card) - REST at
/v1/businesses(OpenAPI) - All of them, listed for agents: /.well-known/ai-catalog.json, and llms.txt
Free, and not for sale
Being listed, found, searched and checked is free, and the protocol is open source. Nobody can pay for a place in the directory's order, or for a score. Questions? Read the FAQ.