# Open Meteo (npm · @pipeworx/mcp-open-meteo)

Open-Meteo MCP — weather forecast + historical reanalysis + sister APIs

- Trust score: 80/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 87/100, [markdown](https://verifymcp.io/servers/pipeworx-io-open-meteo/open-meteo-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-open-meteo/open-meteo-mcp)
- npm · `@pipeworx/mcp-open-meteo`: 80/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo.md), [page](https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-open-meteo`
- Version: `0.2.1`
- 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 2026-11-05.

- **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-open-meteo).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 1 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 59/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1059 tokens (~176/item across 6 items; 6 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**: 84/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 52% 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 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 Open Meteo MCP server?

Open Meteo runs locally as an npm package, launched with npx -y @pipeworx/mcp-open-meteo. 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-open-meteo -- npx -y @pipeworx/mcp-open-meteo
```

### Cursor

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

### VS Code

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

### Codex

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

### opencode

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

### OpenClaw

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

### Hermes

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

### Netclaw

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

### Vellum

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

### Other

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

## 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 80, 0)

- [functional regression] Security disclosure: fail → unverified

### 2026-11-04 (score 80, +16)

- [security improvement] Malware scan: unverified → pass

### 2026-11-03 (score 64, −13)

- [security regression] Malware scan: pass → unverified
- [functional improvement] Stability: unverified → 0.17
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-30 (score 77, 0)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-29 (score 77)

First indexed and scored.

## MCP tools (6)

### `forecast` (~263 tokens)

"What's the weather in [city]" / "weather forecast for [location]" / "will it rain tomorrow", "rain chance / probability this week" / "temperature in [place] this week" / "wind / precipitation / humidity forecast" — global weather forecast up to 16 days ahead, hourly or daily, at any lat/lng. Returns temperature, precipitation, wind, humidity, cloud cover, weather codes by default; pass hourly/daily arg for custom variables. Free, keyless, no signup (Open-Meteo / ECMWF + national weather services). Pair with geocode to convert "Paris" → lat/lng first.

Input parameters:

- `daily` (string): Comma-separated daily variables. Default sensible set.
- `forecast_days` (number): 1-16 (default 7)
- `hourly` (string): Comma-separated hourly variables. Default sensible set.
- `latitude` (number, required)
- `longitude` (number, required)
- `past_days` (number): 0-92 (default 0)
- `temperature_unit` (string): celsius (default) | fahrenheit
- `timezone` (string): IANA timezone or "auto"
- `wind_speed_unit` (string): kmh | ms | mph | kn

### `historical` (~154 tokens)

"What was the weather on [date]" / "historical weather for [location]" / "temperature in [city] last summer" / "rainfall during [period]" / "past weather data" — ERA5 reanalysis covering 1940-present at any global lat/lng. Returns hourly or daily temperature, precipitation, wind, humidity etc. for any date range. Use for climate analysis, retrospective event weather, or training data.

Input parameters:

- `daily` (string)
- `end_date` (string, required): YYYY-MM-DD
- `hourly` (string)
- `latitude` (number, required)
- `longitude` (number, required)
- `start_date` (string, required): YYYY-MM-DD
- `timezone` (string)

### `geocode` (~145 tokens)

"What are the coordinates of [city]" / "lat lng for [place]" / "find [town] location" — resolve a place name (city, village, region) to lat/lng so the other Open-Meteo tools can use them. Free, keyless, multilingual; returns up to 100 matches ranked by population. Use before forecast / historical / air_quality / marine / flood when you only have a place name.

Input parameters:

- `count` (number): Max results, 1-100 (default 10)
- `language` (string): ISO-639 lang for returned names (default en)
- `name` (string, required): Place name (any language)

### `air_quality` (~194 tokens)

"Air quality / AQI in [city]" / "is the air safe to breathe in [location]" / "pollution levels for [place]" / "smoke / smog / wildfire-smoke forecast" / "pollen forecast" — global air quality and pollen forecast at any lat/lng. Returns PM2.5, PM10, ozone (O3), NO2, SO2, CO, dust, and pollen (alder/birch/grass/mugwort/olive/ragweed) up to 5 days ahead, plus European AQI / US AQI. Free, keyless.

Input parameters:

- `forecast_days` (number): 1-5 (default 5)
- `hourly` (string): Comma-separated variables. Default pm2_5,pm10,o3,no2,european_aqi
- `latitude` (number, required)
- `longitude` (number, required)

### `marine` (~129 tokens)

"Wave / swell / surf forecast for [beach]" / "sea conditions in [bay]" / "wave height at [coordinates]" / "is it safe to sail" — global marine weather forecast (wave height, wave period, wave direction, wind waves, swell waves) at any ocean lat/lng. Free, keyless. Use for surf reports, sailing prep, fishing conditions, coastal planning.

Input parameters:

- `forecast_days` (number)
- `hourly` (string): Default wave_height,wave_period,wind_wave_height
- `latitude` (number, required)
- `longitude` (number, required)

### `flood` (~118 tokens)

"Flood risk for [river]" / "river discharge forecast" / "will [river] flood" / "water levels at [location]" — daily river discharge forecast from the GloFAS global flood model. Returns predicted m³/s discharge up to 30 days ahead for any river-bearing lat/lng worldwide. Use for flood risk assessment, agriculture planning, hydrology research.

Input parameters:

- `daily` (string): Default river_discharge
- `forecast_days` (number)
- `latitude` (number, required)
- `longitude` (number, required)

## Diagnostics

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

## Score history

- 2026-11-05: 80
- 2026-11-04: 80
- 2026-11-03: 64
- 2026-11-02: 77
- 2026-11-01: 77
- 2026-10-31: 77
- 2026-10-30: 77
- 2026-10-29: 77

## Common questions

### What is the Open Meteo MCP server?

Open Meteo is an MCP server listed in the public MCP registry as io.github.pipeworx-io/open-meteo. Open-Meteo MCP, weather forecast + historical reanalysis + sister APIs. This page covers its npm package (@pipeworx/mcp-open-meteo).

### Is the Open Meteo MCP server safe to use?

Open Meteo scores 80 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 Open Meteo MCP server expose?

Open Meteo exposes 6 tools: forecast, historical, geocode, air_quality, marine, flood. Their descriptions and schemas cost roughly 1,003 tokens of context every time the server is loaded.

### Is the Open Meteo MCP server still maintained?

Open Meteo 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 Open Meteo MCP server under?

Open Meteo 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 Open Meteo MCP server?

VerifyMCP ran 15 checks on Open Meteo, covering Malware scan, Known CVEs, Install scripts, Dependency health and 11 more. One item could not be completed, a gap on our side rather than a finding about Open Meteo: Security disclosure. 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-open-meteo
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-open-meteo
- Repository: https://github.com/pipeworx-io/mcp-open-meteo
- Website: https://pipeworx.io/packs/open-meteo
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-open-meteo/pipeworx-mcp-open-meteo