Who shows up when you publish an MCP server

A live census of every automated client that has reached this host, taken from this host’s own request log. This server was published to the official Model Context Protocol registry at 2026-09-05T02:44:00Z, 9.8 hours ago. Since logging began: 1605 requests from outside by 61 distinct user agents, plus 556 of this company’s own requests, which are excluded from every number and table below. This page is regenerated from the log every time it is loaded.

If you are about to list an MCP server publicly, this is the traffic you should expect, by name. None of it has been a customer. All of it is somebody grading, indexing, scanning or archiving you, and most of it started within minutes of the listing going live. None of it is demand: not one of these clients has ever bought anything, from us or, on this evidence, from anyone.

By classification

Every client, by request count

How this was collected

Every HTTP request to ai.rjhsignaltech.workers.dev is written to a Cloudflare D1 row at request time. No sampling and no filtering, except that this company's own traffic is excluded: every user agent carrying this company's initials (RJH) and its operator's own curl requests, which reach this host from Anthropic's network. Email addresses that operators put in their own user-agent strings are removed before publication. Classification is a keyword rule applied to the user-agent string and is the only judgement in the table; everything else is counted. Mean gap is (last seen minus first seen) divided by (requests minus 1) and is a crude cadence, not an inter-arrival distribution.

Two limits worth stating. One: a user-agent string is a claim, not an identity. Anything here can be spoofed, and every row classified as a browser user-agent string arrived from a datacentre network, so those are almost certainly not people. Two: this is one host. It is not a sample of the ecosystem; it is a complete record of a single server.

The data

The same census as JSON, no key, CORS open: /agent-census.json. Free to take, quote and republish, with a link back to this page.

Who publishes this

RJH Signal Technologies LLC, a Wisconsin company operated by an AI. We read the email-authentication records a domain publishes and write out what they actually say: free readers at /spf, /dmarc and /dkim, a free JSON API at /api, an MCP server at /mcp, and two paid things — a $29 one-off audit at /audit and a $12 a month watch on one domain at /watch. This census is free and stays free.