# NHC MCP Server (pypi · nhc-mcp)

NHC storm tracks, forecast advisories, watches/warnings, and HURDAT2 data

- Trust score: 63/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-04

## Components

- pypi · `nhc-mcp`: 63/100 (this document), [markdown](https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp.md), [page](https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp)

## Channel facts

- Registry: `pypi`
- Package: `nhc-mcp`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-04.

- **Supply Chain Security**: 50/100
  - Malware scan not yet available for this package.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 0 of 28 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 100/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to oceanmodeling/ocean-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 2 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 814 tokens (~162/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the NHC MCP Server server?

NHC MCP Server runs locally as a PyPI package, launched with uvx nhc-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add oceanmodeling-nhc-mcp -- uvx nhc-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "oceanmodeling-nhc-mcp": {
      "command": "uvx",
      "args": [
        "nhc-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "oceanmodeling-nhc-mcp": {
      "command": "uvx",
      "args": [
        "nhc-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add oceanmodeling-nhc-mcp -- uvx nhc-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "oceanmodeling-nhc-mcp": {
      "type": "local",
      "command": [
        "uvx",
        "nhc-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add oceanmodeling-nhc-mcp --command uvx --arg nhc-mcp
```

### Hermes

```yaml
mcp_servers:
  oceanmodeling-nhc-mcp:
    command: "uvx"
    args: ["nhc-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "oceanmodeling-nhc-mcp": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "nhc-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add oceanmodeling-nhc-mcp -t stdio -c uvx -a nhc-mcp
```

### Other

```json
{
  "mcpServers": {
    "oceanmodeling-nhc-mcp": {
      "command": "uvx",
      "args": [
        "nhc-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-01 (score 63)

First indexed and scored.

## MCP tools (5)

### `nhc_get_active_storms` (~87 tokens)

Get currently active tropical cyclones from the National Hurricane Center.

Returns a list of all active storms with their current classification,
location, and advisory information. Returns an empty list outside of
hurricane season or when no storms are active.

Args:
    response_format: Output format — 'markdown' (default) or 'json'.

Input parameters:

- `response_format` (string)

Output parameters:

- `result` (string)

### `nhc_get_forecast_track` (~199 tokens)

Get the official NHC 5-day forecast track positions for an active storm.

Retrieves forecast point data from the NHC ArcGIS MapServer including
position (lat/lon), forecast time, maximum winds, development type,
and Saffir-Simpson category for each forecast period (12h, 24h, etc.).

Note: This only works for currently active storms. Use nhc_get_active_storms
first to see available storms and their IDs.

Args:
    storm_id: NHC storm identifier (e.g., 'AL052024', 'EP042023').
    response_format: Output format — 'markdown' (default), 'json', or
        'geojson' (a FeatureCollection: a LineString for the forecast
        track plus a Point per forecast period, coordinates [lon, lat]).

Input parameters:

- `response_format` (string)
- `storm_id` (string, required)

Output parameters:

- `result` (string)

### `nhc_get_storm_watches_warnings` (~136 tokens)

Get active watches and warnings for an active tropical cyclone.

Returns coastal watch/warning segments (Hurricane Warning, Tropical Storm
Watch, etc.) from the NHC ArcGIS MapServer.

Note: This only works for currently active storms with watches/warnings in
effect. Use nhc_get_active_storms first to see available storms.

Args:
    storm_id: NHC storm identifier (e.g., 'AL052024').
    response_format: Output format — 'markdown' (default) or 'json'.

Input parameters:

- `response_format` (string)
- `storm_id` (string, required)

Output parameters:

- `result` (string)

### `nhc_get_best_track` (~166 tokens)

Get best track (observed path) data for a tropical cyclone.

For recent storms (current/previous year), retrieves from ATCF B-deck files.
For historical storms, retrieves from HURDAT2 archive (Atlantic 1851–2024,
East Pacific 1949–2024).

Args:
    storm_id: NHC storm identifier (e.g., 'AL092005' for Katrina, 'AL042024').
    response_format: Output format — 'markdown' (default), 'json', or
        'geojson' (a FeatureCollection: a LineString for the track plus a
        Point per fix, coordinates [lon, lat], for mapping).

Input parameters:

- `response_format` (string)
- `storm_id` (string, required)

Output parameters:

- `result` (string)

### `nhc_search_storms` (~226 tokens)

Search historical tropical cyclones in the HURDAT2 database.

Searches the Atlantic (1851–2024) and East Pacific (1949–2024) hurricane
databases. Filter by storm name, year, basin, and/or minimum wind speed.

Args:
    name: Storm name to search for (case-insensitive, partial match). E.g., 'katrina'.
    year: Filter by year (e.g., 2005).
    basin: Filter by basin — 'al' (Atlantic), 'ep' (East Pacific), 'cp' (Central Pacific).
    min_wind: Minimum peak wind speed in knots (e.g., 64 for hurricanes, 96 for major).
    limit: Maximum number of results to return (default 50).
    response_format: Output format — 'markdown' (default) or 'json'.

Input parameters:

- `basin`
- `limit` (integer)
- `min_wind`
- `name`
- `response_format` (string)
- `year`

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp#diagnostics

## Score history

- 2026-10-04: 63
- 2026-10-03: 63
- 2026-10-02: 63
- 2026-10-01: 63

## Common questions

### What is the NHC MCP Server server?

NHC MCP Server is listed in the public MCP registry as io.github.oceanmodeling/nhc-mcp. NHC storm tracks, forecast advisories, watches/warnings, and HURDAT2 data. This page covers its PyPI package (nhc-mcp).

### Is the NHC MCP Server server safe to use?

NHC MCP Server scores 63 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 October 2026. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the NHC MCP Server server expose?

NHC MCP Server exposes 5 tools: nhc_get_active_storms, nhc_get_forecast_track, nhc_get_storm_watches_warnings, nhc_get_best_track, nhc_search_storms. Their descriptions and schemas cost roughly 814 tokens of context every time the server is loaded.

### Is the NHC MCP Server server still maintained?

NHC MCP Server is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the NHC MCP Server server under?

NHC MCP Server declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/nhc-mcp/
- Socket report: https://socket.dev/pypi/package/nhc-mcp
- Repository: https://github.com/oceanmodeling/ocean-mcp
- Changelog RSS feed: https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp.json
- HTML version of this page: https://verifymcp.io/servers/oceanmodeling-nhc-mcp/nhc-mcp