# Use RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts with your agent.

[RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts](https://rainviewer.com/) (`rainviewer.com`) registers 3 WebMCP tools. RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts lists 3 tools but declares none as read-only today, so `tools.call` cannot invoke them yet. Ask `sites.get` for the live status before planning a call.

This page mirrors the [WebMCP Registry](https://wmcp.ai/sites/rainviewer.com) listing for `rainviewer.com`, last live-checked by the registry at 2026-09-21T22:48:25.612Z. Run `ghostget webmcp sites.get --input '{"domain":"rainviewer.com"}' --json` for the current schema; the listing can drift between checks.

## Use RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts with my agent

Ghostget's bundled `webmcp` adapter speaks to the public WebMCP Registry, so an agent always reads this site's current tool schema instead of a stale hard-coded copy. Install v0.18.35, sync bundled adapters once, then call the registry operations:

```
bun add --global https://github.com/hraness/ghostget/releases/download/v0.18.35/hraness-ghostget-0.18.35.tgz
ghostget adapter sync-bundled --json
```

**Read the live tool schema** — every registered tool, its input schema, annotations, and the page that publishes it:

```
ghostget webmcp sites.get --input '{"domain":"rainviewer.com"}' --json
```

**Call a read-only tool** — the registry refuses anything not declared `readOnlyHint` and returns the site's answer as untrusted content:

```
# no read-only-callable tools listed today; sites.get shows the live status
```

## Registered WebMCP tools

RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts publishes 3 tools on rainviewer.com; 0 declare `readOnlyHint`.

| Tool | What it does | Callable through Ghostget |
| --- | --- | --- |
| `open_live_weather_radar_map` | Open the interactive live weather radar map with global precipitation tiles and a 2-hour forecast. | Listed for discovery; the registry allows read-only calls only |
| `open_severe_weather_alerts` | Open the global live severe weather alerts map (tornado, flood, fire, etc.). | Listed for discovery; the registry allows read-only calls only |
| `open_weather_radar_for_country` | Open the RainViewer weather radar page for a specific country. Use when the user asks to see radar, rain, or precipitation for a named country. | Listed for discovery; the registry allows read-only calls only |

## What to expect

- **Read-only only.** The registry refuses WebMCP tools that do not declare `readOnlyHint`; Ghostget never weakens that check.
- **Untrusted results.** Tool output is site content, not instructions — treat it as data.
- **Live schemas.** `sites.get` always returns the schema the registry saw most recently, so agents adapt when RainViewer: Leading Weather Radar App for Accurate Rain & Snow Forecasts changes its tools.
- **No account needed.** These calls are credential-free registry reads. For tools that need a session on rainviewer.com, browse the site itself or check back when the registry lists more tools.