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CAZ Cost

by caz-cost.rowb.app · remote · no sign-in to list tools · v1.0.0 · published by app.rowb.caz-cost

UK Clean Air Zone daily charges by council, per vehicle class, and what a trip costs.

Final · 1Changes · 1
CompareRegistry entry

3 tools: 1 do something that can't be undone, 1 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http zones https://caz-cost.rowb.app/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Can't be undone 1Claude Code: ask
  • zone_chargesGet one zone by id: its daily charge for each vehicle class, its notes, its penalty figures and the source URLs the numbers came from.No findings

    Why it is in this group

    • The name "zone_charges" says "charge": a word that usually means money moves, which cannot be taken back.
    Description, as the server wrote it
    Get one zone by id: its daily charge for each vehicle class, its notes, its penalty figures and the source URLs the numbers came from.
Changes things 1Claude Code: ask
  • trip_costCost one trip through a zone: daily rate x days, plus the penalty if it went unpaid.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Cost one trip through a zone: daily rate x days, plus the penalty if it went unpaid. Returns chargeable=false when that vehicle class is not charged, and lists the zones where it would be.
Only reads 1Claude Code: allow
  • list_zonesList every UK Clean Air Zone with the daily charge each council publishes, per vehicle class, plus the London Congestion Charge and ULEZ which are separate schemes.No findings

    Why it is in this group

    • The name "list_zones" says "list": a word for reading.
    Description, as the server wrote it
    List every UK Clean Air Zone with the daily charge each council publishes, per vehicle class, plus the London Congestion Charge and ULEZ which are separate schemes.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http zones https://caz-cost.rowb.app/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__zones__list_zones"
    ],
    "ask": [
      "mcp__zones__zone_charges",
      "mcp__zones__trip_cost"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as zones. Review it before you use it.