# TidesAtlas

> Worldwide tide times and heights, marine weather, sea temperature, sun and moon for 13,000+ ports.

- name: com.tidesatlas/tides
- version: 1.1.1
- connection class: R1 (autonomous)
- trust: 100/100
- quality: 88/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.tidesatlas%2Ftides
- tools: https://api.protogrid.dev/v1/servers/com.tidesatlas%2Ftides/tools

**An agent can connect on its own if it already holds `X_API_KEY`, `X_API_KEY`.** Remote endpoint behind a static API key or header. The registry never sees the value; the agent fills the placeholder.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "tides": {
      "type": "http",
      "url": "https://tidesatlas.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}
```

Placeholders to fill: `${X_API_KEY}`, `${X_API_KEY}`.

## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 100
- drivers: +repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-100% +updated-10d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 88/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2024-11-05; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### 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`: 10 of 10 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 1,386 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 83 (weight 15)

- warn `stability.changes`: 10 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

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

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

- tools: 10, about 1,386 tokens to load them all
- tool set hash: 49f25e33b9a578fa334ed25473c078ab
- tools last changed: 2026-11-04T09:14:15.597Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.tidesatlas/tides.svg)](https://protogrid.dev/servers/com.tidesatlas/tides)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-11-04 `get_radar` changed (annotations)
- 2026-11-04 `get_observations` changed (annotations)
- 2026-11-04 `get_history` changed (annotations)
- 2026-11-04 `get_conditions` changed (annotations)
- 2026-11-04 `get_astronomy` changed (annotations)
- 2026-11-04 `get_marine` changed (annotations)
- 2026-11-04 `get_weather` changed (annotations)
- 2026-11-04 `list_countries` changed (annotations)
- 2026-11-04 `search_ports` changed (annotations)
- 2026-11-04 `get_tides` changed (description, annotations)
  - before: Get tide predictions (high/low water times and heights) for a port or coordinates. Returns extremes with datetime, height in meters, and type (high/low). Supports 18,400+ stations worldwide.
  - after: Get tide predictions (high/low water times and heights) for a port or coordinates. Returns extremes with datetime, height in meters, and type (high/low). Supports 13,000+ stations in 180 countries.

Full history: https://api.protogrid.dev/v1/servers/com.tidesatlas%2Ftides/changes

## Remotes

- https://tidesatlas.com/mcp (streamable-http, auth api_key ${X_API_KEY}, reachable true, uptime30d 1)

## Packages

_none_

## Tools (10)

- `get_astronomy`: Get sun and moon data: sunrise, sunset, dawn, dusk, day length, moon phase, illumination, moonrise, moonset.
- `get_conditions`: Get unified weather + marine + astronomy data in one call. More efficient than calling each separately.
- `get_history`: Get historical tide predictions and weather data for past dates. Tides up to 365 days, weather up to 90 days.
- `get_marine`: Get ocean and wave forecast (wave height, swell, sea state on Douglas scale). Returns hourly and daily data.
- `get_observations`: Get real-time sea level observations from REFMAR/SHOM tide gauges (French stations only). Returns 10-minute interval readings.
- `get_radar`: Get rain radar tile URLs for a location. Returns past frames and short-term nowcast frames for map overlays.
- `get_tides`: Get tide predictions (high/low water times and heights) for a port or coordinates. Returns extremes with datetime, height in meters, and type (high/low). Supports 13,000+ stations in 180 countries.
- `get_weather`: Get weather forecast (temperature, wind, precipitation, UV, conditions) for a port or coordinates. Returns hourly and daily data.
- `list_countries`: List all 188 countries that have tide stations, with their station counts and ISO codes.
- `search_ports`: Search for tide stations by name or country. Returns port name, slug, coordinates, timezone, country.