Skip to content

Tipping Rules

by tippingrules.com · remote · no sign-in to list tools · v1.0.1 · published by com.tippingrules

Read-only travel tipping for 140 destinations: search, country rules, and tip calculator.

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 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 tipping-rules https://www.tippingrules.com/api/mcp

Tools

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

3 tools

Changes things 1Claude Code: ask
  • calculate_tipCalculate a suggested tip and total for a bill using Tipping Rules destination norms (percent or round-up).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.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Calculate a suggested tip and total for a bill using Tipping Rules destination norms (percent or round-up). Returns amounts plus canonical destination and calculator URLs.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • get_tipping_rulesGet concise tipping guidance for a destination: status, summary, key service recommendations, last reviewed date, and the canonical page URL.Reads text others writeNo findings

    Why it is in this group

    • The name "get_tipping_rules" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "get" and "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    Get concise tipping guidance for a destination: status, summary, key service recommendations, last reviewed date, and the canonical page URL.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_countriesSearch Tipping Rules destinations by name or region.No findings

    Why it is in this group

    • The name "search_countries" says "search": a word for reading.
    Description, as the server wrote it
    Search Tipping Rules destinations by name or region. Returns matching destinations with status and canonical page URLs.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

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.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write1
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http tipping-rules https://www.tippingrules.com/api/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__tipping-rules__search_countries",
      "mcp__tipping-rules__get_tipping_rules"
    ],
    "ask": [
      "mcp__tipping-rules__calculate_tip"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as tipping-rules. Review it before you use it.

Capability tags behind 1 rule
  • mcp__tipping-rules__get_tipping_rules untrusted-input