# Use Vespper with your agent.

[Vespper](https://vespper.com/) (`vespper.com`) registers 4 WebMCP tools. 4 of 4 tools declares `readOnlyHint`, so an agent can invoke them through `tools.call`. The registry runs the tool in a fresh headless page on vespper.com and returns untrusted site content.

This page mirrors the [WebMCP Registry](https://wmcp.ai/sites/vespper.com) listing for `vespper.com`, last live-checked by the registry at 2026-09-21T21:25:55.465Z. Run `ghostget webmcp sites.get --input '{"domain":"vespper.com"}' --json` for the current schema; the listing can drift between checks.

## Use Vespper 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":"vespper.com"}' --json
```

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

```
ghostget webmcp tools.call --input '{"domain":"vespper.com","tool":"ask_site","input":"{}"}' --json
```

## Registered WebMCP tools

Vespper publishes 4 tools on vespper.com; 4 declare `readOnlyHint`.

| Tool | What it does | Callable through Ghostget |
| --- | --- | --- |
| `ask_site` | Find relevant Vespper product, setup, security, benchmark, FAQ, documentation, and blog information. Use it to answer questions about Vespper or DOCX agent workflows. Returns matching excerpts and their site paths. | Callable read-only tool |
| `browse_blog` | Discover Vespper blog articles by topic or category. Use it to find research, benchmarks, engineering, or product writing. Returns article summaries, publication dates, reading times, and site paths. | Callable read-only tool |
| `calculate_roi` | Calculate estimated annual savings, engineering hours reclaimed, and delivery acceleration from Vespper's ROI model. Use when evaluating DOCX integration costs. Updates the visible homepage calculator and returns its estimates. | Callable read-only tool |
| `get_mcp_setup` | Get the hosted Vespper DOCX MCP endpoint, authentication requirements, client configuration, and official setup links. Use it when connecting an MCP client. Returns a safe template with no credentials embedded. | Callable read-only tool |

## 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 Vespper changes its tools.
- **No account needed.** These calls are credential-free registry reads. For tools that need a session on vespper.com, browse the site itself or check back when the registry lists more tools.