Towing Capacity Checker MCP server

• Registry nameuk.co.towingcapacitychecker/siteverified in the MCP registry

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

• Stateanswerschecked 2026-10-26
• Tools6
• Server calls itselfTowing Capacity Checker (towingcapacitychecker.co.uk)
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 1224 ms.

• Its tools do every use case we checked: check a car and trailer combination against UK licence rules; confirm trailer weight limits against the car's plate figures.

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.

• INITE MCP score95 of 100answers 98 · does the job 100 · definitions 81 · context 100 · connects 100
• What an agent can do with it2 of 2 use cases
• Answered100% of days10 of 10 daily checks
• Median first answer1250 ms
• Space in an agent's context≈ 820 tokensthe definitions of all its tools (6), which an agent carries on every turn
• Tool definitionsB · 81 of 100
• Typed results0 of 6 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 1 of 6
• Not saying whether it only reads or can destroy: 6 of 6

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 →

• checker_start

  The first question of the Towing capacity checker decision guide.

• checker_answer

  Given a question id and the chosen option (its `choice` index), return the next question or the final verdict.

• checker_tree

  Every question, option and verdict of the Towing capacity checker guide, for reasoning end to end.

• enquiry_describe

  Read first. States plainly what submit_enquiry does on Towing Capacity Checker: it starts an enquiry with human providers who quote directly. Nothing is bought, ordered or paid; no quote is guaranteed; it is free. Also returns who…

• enquiry_fields

  Every field of the Towing Capacity Checker enquiry: key, label, type, whether required, help text and the allowed options where there are any. Pass answers to submit_enquiry keyed by field key.

• submit_enquiry

  Submits an enquiry to Towing Capacity Checker — NOT a purchase, NOT a guaranteed quote. Step 1: call with the answers (keyed by field key from enquiry_fields) and consent=true; it validates and returns a summary, the consent line and a…