# Tipping Rules

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

- name: com.tippingrules/tipping-rules
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 80/100 flags: no-repository
- quality: 96/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.tippingrules%2Ftipping-rules
- tools: https://api.protogrid.dev/v1/servers/com.tippingrules%2Ftipping-rules/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "tipping-rules": {
      "type": "http",
      "url": "https://www.tippingrules.com/api/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 85
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% ~updated-49d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 96/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 447 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 447 tokens to load them all
- tool set hash: 707486f53e3770d15135fdc841ba081a
- tools last changed: 2026-10-12T16:05:35.238Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.tippingrules/tipping-rules.svg)](https://protogrid.dev/servers/com.tippingrules/tipping-rules)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-12 `calculate_tip` changed (inputSchema, outputSchema)
- 2026-10-12 `get_tipping_rules` changed (outputSchema)
- 2026-10-12 `search_countries` changed (outputSchema)

Full history: https://api.protogrid.dev/v1/servers/com.tippingrules%2Ftipping-rules/changes

## Remotes

- https://www.tippingrules.com/api/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (3)

- `calculate_tip`: 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.
- `get_tipping_rules`: Get concise tipping guidance for a destination: status, summary, key service recommendations, last reviewed date, and the canonical page URL.
- `search_countries`: Search Tipping Rules destinations by name or region. Returns matching destinations with status and canonical page URLs.