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CHS Backflow MCP server

Which MCP servers are CHS Backflow's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-28

← Back to CHS Backflow

Whose server it is
  • Registry namecom.chsbackflow/bookingverified in the MCP registry

The registry name sits under chsbackflow.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-28
  • Stateanswerschecked 2026-10-28
  • Tools3
  • Server calls itselfchsbackflow.com-booking
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 108 ms.

Should an agent connect itConnect it
  • Its tools do every use case we checked: get a free referral to a licensed backflow tester; schedule an annual backflow test and certification.

Once connected

  • For "get a free referral to a licensed backflow tester", the likely first call is request_service.
  • Parameters are untyped or undescribed in 1 of 3 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 7, the first on 2026-10-28
  • INITE MCP score99 of 100answers 100 · does the job 100 · definitions 94 · context 100 · connects 100
  • What an agent can do with it2 of 2 use cases
  • Answered100% of days7 of 7 daily checks
  • Median first answer107 ms
  • Space in an agent's context≈ 472 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsA · 94 of 100
  • Typed results0 of 3 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 1 of 3

What an agent can do with it

  • can do · get a free referral to a licensed backflow tester
  • can do · schedule an annual backflow test and certification
  • not sure · request a repair or replacement quote for a backflow device

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers3 tools · read 2026-10-28
  • get_service_info

    Facts about CHS Backflow, a free referral service for backflow testing in Charleston, South Carolina: towns served, typical prices, hours, response time, languages and phone. Call this before recommending or booking.

  • request_service

    Book backflow testing in the Charleston area for a real person who asked for it, with their consent. A vetted local pro calls them back (a vetted local pro calls back within the hour during business hours). Free to the homeowner. Returns…

  • check_service_area

    Is a US ZIP code inside the Charleston service area? Returns yes/no and the nearest served town.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "booking": {
      "type": "http",
      "url": "https://chsbackflow.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http chsbackflow https://chsbackflow.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://chsbackflow.com/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.