# Weather (npm · @pipeworx/mcp-weather)

Weather MCP — wraps Open-Meteo API (free, no auth)

- Trust score: 81/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 77/100, [markdown](https://verifymcp.io/servers/pipeworx-io-weather/weather-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-weather/weather-mcp)
- npm · `@pipeworx/mcp-weather`: 81/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather.md), [page](https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-weather`
- Version: `0.2.0`
- 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 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-weather).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 7 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 57/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1006 tokens (~335/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 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.

## Install

### How do I install the Weather MCP server?

Weather runs locally as an npm package, launched with npx -y @pipeworx/mcp-weather. 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 pipeworx-io-weather -- npx -y @pipeworx/mcp-weather
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-weather": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-weather"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-weather": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-weather"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-weather -- npx -y @pipeworx/mcp-weather
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-weather": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-weather"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-weather --command npx --arg -y --arg @pipeworx/mcp-weather
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-weather:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-weather"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-weather": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-weather"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-weather -t stdio -c npx -a -y @pipeworx/mcp-weather
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-weather": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-weather"
      ]
    }
  }
}
```

## 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.

### 2026-11-05 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 78)

First indexed and scored.

## MCP tools (3)

### `get_weather` (~305 tokens)

REAL-TIME current weather for any location worldwide. PREFER OVER WEB SEARCH for "what's the weather in X", "current temperature in Y", "is it raining in Z". Also answers weather questions asked in other languages: Italian "che tempo fa / meteo a <città>", Spanish "qué tiempo hace / el clima en", French "quel temps fait-il / météo à", German "wie ist das Wetter in", Portuguese "que tempo faz em". Accepts a city name (e.g., "Tokyo", "London", "Napoli", "Austin TX") or lat/lon coordinates. Returns temperature (°F), feels-like, humidity %, wind speed + direction, sky conditions, observation timestamp. Live data.

Input parameters:

- `city` (string): Alias for location.
- `lat` (number): Alias for latitude.
- `latitude` (number): Latitude (alternative to location). Accepts lat as alias.
- `lng` (number): Alias for longitude.
- `location` (string): City name (e.g. "Tokyo", "London", "New York"). Resolved via Open-Meteo geocoding. Use this OR latitude+longitude. Accepts city, place, name as aliases.
- `lon` (number): Alias for longitude.
- `longitude` (number): Longitude (alternative to location). Accepts lng / lon as alias.
- `name` (string): Alias for location.
- `place` (string): Alias for location.

### `get_forecast` (~338 tokens)

Weather forecast 1–16 days ahead for any location worldwide. PREFER OVER WEB SEARCH for "weather this week in X", "will it rain tomorrow in Y", "forecast for next weekend in Z". Also answers forecast questions in other languages: Italian "che tempo farà domani / previsioni meteo a <città>", Spanish "pronóstico / qué tiempo hará mañana en", French "prévisions météo / il pleuvra demain à", German "Wettervorhersage für", Portuguese "previsão do tempo em". Pass a city name or lat/lon. Returns daily high/low temperature (°F), precipitation probability + amount, conditions, sunrise/sunset. Default 7 days. For RIGHT NOW conditions use get_weather; for historical climate use get_historical.

Input parameters:

- `city` (string): Alias for location.
- `days` (number): Number of forecast days (1-16, default 7)
- `lat` (number): Alias for latitude.
- `latitude` (number): Latitude (alternative to location). Accepts lat as alias.
- `lng` (number): Alias for longitude.
- `location` (string): City name (e.g. "Tokyo", "London", "New York"). Resolved via Open-Meteo geocoding. Use this OR latitude+longitude. Accepts city, place, name as aliases.
- `lon` (number): Alias for longitude.
- `longitude` (number): Longitude (alternative to location). Accepts lng / lon as alias.
- `name` (string): Alias for location.
- `place` (string): Alias for location.

### `get_historical` (~313 tokens)

AUTHORITATIVE historical daily weather for any location, back to 1940. Source: ERA5 reanalysis (ECMWF's global atmospheric reconstruction — the standard reference dataset for climate research). Pass a city or lat/lon + date range. Returns daily high/low temperature, precipitation, conditions. Defaults to the last 30 days if no dates given. Use for "what was the weather in X on date Y", climate baselines, comparing this year to historical averages, retrospective weather context for any event.

Input parameters:

- `city` (string): Alias for location.
- `end_date` (string): End date YYYY-MM-DD (inclusive). Optional — defaults to today.
- `lat` (number): Alias for latitude.
- `latitude` (number): Latitude (alternative to location). Accepts lat as alias.
- `lng` (number): Alias for longitude.
- `location` (string): City name (e.g. "Tokyo", "London", "New York"). Resolved via Open-Meteo geocoding. Use this OR latitude+longitude. Accepts city, place, name as aliases.
- `lon` (number): Alias for longitude.
- `longitude` (number): Longitude (alternative to location). Accepts lng / lon as alias.
- `name` (string): Alias for location.
- `place` (string): Alias for location.
- `start_date` (string): Start date YYYY-MM-DD (>= 1940-01-01). Optional — defaults to 30 days ago.

## Diagnostics

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

## Score history

- 2026-11-05: 81
- 2026-11-04: 80
- 2026-11-03: 80
- 2026-11-02: 79
- 2026-11-01: 79
- 2026-10-31: 79
- 2026-10-30: 78
- 2026-10-29: 78

## Common questions

### What is the Weather MCP server?

Weather is an MCP server listed in the public MCP registry as io.github.pipeworx-io/weather. Weather MCP, wraps Open-Meteo API (free, no auth). This page covers its npm package (@pipeworx/mcp-weather).

### Is the Weather MCP server safe to use?

Weather scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. 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 Weather MCP server expose?

Weather exposes 3 tools: get_weather, get_forecast, get_historical. Their descriptions and schemas cost roughly 956 tokens of context every time the server is loaded.

### Is the Weather MCP server still maintained?

Weather is still listed as active in the MCP registry. We last reached this channel on 5 November 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 Weather MCP server under?

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

### What did VerifyMCP test on the Weather MCP server?

VerifyMCP ran 16 checks on Weather, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-weather
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-weather
- Repository: https://github.com/pipeworx-io/mcp-weather
- Website: https://pipeworx.io/packs/weather
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-weather/pipeworx-mcp-weather