# Use HVAC Help with your agent.

[HVAC Help](https://hvachelp.co/) (`hvachelp.co`) registers 3 WebMCP tools. HVAC Help 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/hvachelp.co) listing for `hvachelp.co`, last live-checked by the registry at 2026-09-21T21:16:54.635Z. Run `ghostget webmcp sites.get --input '{"domain":"hvachelp.co"}' --json` for the current schema; the listing can drift between checks.

## Use HVAC Help 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":"hvachelp.co"}' --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

HVAC Help publishes 3 tools on hvachelp.co; 0 declare `readOnlyHint`.

| Tool | What it does | Callable through Ghostget |
| --- | --- | --- |
| `get_agent_discovery` | Return URLs for agent discovery artifacts. | Listed for discovery; the registry allows read-only calls only |
| `open_quote_form` | Open the human quote wizard with optional prefill. | Listed for discovery; the registry allows read-only calls only |
| `submit_hvac_quote` | Submit a free HVAC quote request after explicit user consent. Requires country, postal/ZIP, service, urgency, name, email. | 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 HVAC Help changes its tools.
- **No account needed.** These calls are credential-free registry reads. For tools that need a session on hvachelp.co, browse the site itself or check back when the registry lists more tools.