uk.co.contractorpaycalculator/site

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Contractor Pay Calculator: the site's own MCP server — calculator, enquiry (enquiry = a human...

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "site": {
      "url": "https://contractorpaycalculator.co.uk/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (5)

• calculator_describe

  The inputs this calculator takes (with units, ranges and defaults), the outputs it returns, and the assumptions and tables behind it.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• calculate

  Run the Day rate take-home calculator calculator: Annual invoice value; Umbrella margin (£25/week); Gross pay (after employer costs); Employer NI (15%, funded from your rate). Missing inputs fall back to their documented defaults.

  Parameters:

  • ir35 — string — IR35 status
  • dayRate — number — Day rate
  • expenses — number — Annual business expenses (outside IR35 only)
  • daysPerWeek — number — Days worked per week
  • weeksPerYear — number — Working weeks per year

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• enquiry_describe

  Read first. States plainly what submit_enquiry does on Contractor Pay Calculator: 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 receives the details, the consent wording, and how the person confirms.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• enquiry_fields

  Every field of the Contractor Pay Calculator 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.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• submit_enquiry

  Submits an enquiry to Contractor Pay Calculator — 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 confirmation token — show the person the summary and the consent line. Step 2: only if the person agrees, call again with the same answers, consent=true and the confirmation token; the enquiry is then submitted, and the person receives an email with a link they must click before any provider sees it. Consent means the person has read and agreed to: "Send my contact details to up to three accountancy and tax firms, chosen by Contractor Pay Calculator, who'll contact me directly. I'll be emailed each firm's name as my details go to it, and can stop any more firms getting them."

  Parameters:

  • answers (required) — object — the person's answers, keyed by field key
  • consent (required) — boolean — true only when the person has agreed to: Send my contact details to up to three accountancy and tax firms, chosen by Contractor Pay Calculator, who'll contact me directly. I'll be emailed each firm's name as my details go to it, and can stop any more firms getting them.
  • confirmation — string — the confirmation token from step 1, after the person has approved the summary

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.