# Use S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first. with your agent.

[S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first.](https://s4e.io/) (`s4e.io`) registers 4 WebMCP tools. S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first. lists 4 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/s4e.io) listing for `s4e.io`, last live-checked by the registry at 2026-09-22T07:51:47.612Z. Run `ghostget webmcp sites.get --input '{"domain":"s4e.io"}' --json` for the current schema; the listing can drift between checks.

## Use S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first. 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":"s4e.io"}' --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

S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first. publishes 4 tools on s4e.io; 0 declare `readOnlyHint`.

| Tool | What it does | Callable through Ghostget |
| --- | --- | --- |
| `get_s4e_agent_overview` | Return how agents authenticate and which MCP/API endpoints to use. Does not call protected APIs. | Listed for discovery; the registry allows read-only calls only |
| `open_s4e_page` | Navigate this tab to a first-party S4E marketing page such as /tools, /platform, or /plans. | Listed for discovery; the registry allows read-only calls only |
| `search_s4e_tools` | Search S4E free vulnerability scanners by name, category, or keyword and open the results page. | Listed for discovery; the registry allows read-only calls only |
| `start_free_scan` | Prefill the homepage fast-scan form with a domain or IP. The user must complete captcha and click Start Free Scan. | 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 S4E Free Vulnerability Scanner. Your site has weaknesses. Find them first. changes its tools.
- **No account needed.** These calls are credential-free registry reads. For tools that need a session on s4e.io, browse the site itself or check back when the registry lists more tools.