SiteGuardian
REMOTE · MCP.SITEGUARDIAN.IO · SCANNED SEP 22
EU-hosted website monitoring + 17-framework compliance MCP. One anonymous tool, four authenticated.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security77
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability59
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1081 tokens (~216/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the SiteGuardian MCP server?
SiteGuardian is a hosted endpoint at https://mcp.siteguardian.io/, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.siteguardian.io
claude mcp add --transport http gweber-siteguardian 'https://mcp.siteguardian.io/'
{
"mcpServers": {
"gweber-siteguardian": {
"url": "https://mcp.siteguardian.io/"
}
}
} {
"servers": {
"gweber-siteguardian": {
"type": "http",
"url": "https://mcp.siteguardian.io/"
}
}
} [mcp_servers.gweber-siteguardian] url = "https://mcp.siteguardian.io/"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"gweber-siteguardian": {
"type": "remote",
"url": "https://mcp.siteguardian.io/",
"enabled": true
}
}
} openclaw mcp add gweber-siteguardian --url 'https://mcp.siteguardian.io/' --transport streamable-http
mcp_servers:
gweber-siteguardian:
url: "https://mcp.siteguardian.io/" {
"McpServers": {
"gweber-siteguardian": {
"Transport": "http",
"Url": "https://mcp.siteguardian.io/"
}
}
} assistant mcp add gweber-siteguardian -t streamable-http -u 'https://mcp.siteguardian.io/'
{
"mcpServers": {
"gweber-siteguardian": {
"type": "http",
"url": "https://mcp.siteguardian.io/"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 10 Sept 26 0
- Stability: 0.97 → pass security
- 9 Sept 26 0
- Stability: pass → 0.97 functional
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +1
- Stability: 0.97 → pass security
- 12 Aug 26 0
- Endpoint reachability: unreachable → reachable ▲ functional
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 10 Aug 26 0
- Endpoint reachability: reachable → unreachable ▼ security
- Stability: 0.47 → unverified ▼ security
- HSTS header: fail → unverified ▼ security
- Authorization: partial → unverified ▼ security
- Transport: pass → fail ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 7 Aug 26 0
- The server no longer declares the “experimental” capability functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 22 Sept 2026 · Probed https://mcp.siteguardian.io
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.siteguardian.io | CN=YE2,O=Let's Encrypt,C=US | 22 Aug 2026 | 20 Nov 2026 | ECDSA 256 | ECDSA-SHA384 | 54932218cf5c17ea555813f19e48da952f8 |
| SANs: mcp.siteguardian.io | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of mcp.siteguardian.io. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| siteguardian.io. | present | 20350 | 13 | Verified |
| mcp.siteguardian.io. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.siteguardian.io | Verified | 200 | |
| http (plaintext) | http://mcp.siteguardian.io | HTTPS enforced | 301 | https://mcp.siteguardian.io/ |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_domain_status ~191
Returns the current security grade (A–F), last-scan timestamp, and list of active issues for a domain that is ALREADY under SiteGuardian monitoring by the authenticated account. Each issue carries a stable id, a severity, a short title, and an impact description. The response also includes a relative dashboard URL. Use this when the user asks about the current state of a specific monitored domain, wants to confirm a recent change landed, or needs issue ids to call get_fix_recommendations with a specific issue_id. Do NOT use this for domains not yet under monitoring — it will return a domain_not_monitored error; call scan_domain for one-off checks instead. Compliance framework tags (NIS2 / GDPR / DORA) are NOT included in v1; framework tagging on the monitored-domain path is tracked as a follow-up. Requires a valid API key.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| active_issues | array | yes | – |
| dashboard_url | string | yes | – |
| domain | string | yes | – |
| grade | – | – | – |
| last_scan_at | – | – | – |
No examples provided.
get_drift_events ~235
Returns recent configuration drift events for a domain under monitoring by the authenticated account — TLS changes, DNSSEC state changes, new or removed security headers, shifts in third-party JS hosts, new cookies. Each event carries its observed-at timestamp, a kind (tls/dnssec/cookies/js_hosts/headers), a severity classified centrally (high for tls/dnssec/headers, medium for cookies/js_hosts, otherwise low), a short summary, and a sanitised detail payload. Use this when the user asks 'what changed' on a domain, wants to audit recent posture shifts, or is diagnosing an unexpected issue. Pair it with get_domain_status to see the current state and get_drift_events to see how it got there. Do NOT use this for a domain that is not under monitoring — you'll get a domain_not_monitored error; monitoring has to be active for the drift history to accumulate. Optional since (ISO-8601) and limit (1..100) params narrow the window. Requires a valid API key.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| limit | integer | – | – |
| since | – | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| events | array | yes | – |
No examples provided.
get_fix_recommendations ~249
Returns copy-paste-ready fix recommendations (nginx, Apache, DNS, shell) for the issues found on a domain the caller has already paid for — either an active Monitor/Compliance subscription covering the domain, OR a purchased one-off Report for the domain. Each recommendation carries a stable issue_id, a priority (high/medium/low), a title, prose instructions, one or more config snippets with the target domain already interpolated, a verify command, and a category tag. Use this when the user asks how to fix an issue, wants the exact config to apply, or needs to verify a fix worked. Pass the optional issue_id to scope the response to one specific finding. The response is read-only — this tool NEVER triggers a fresh scan; fixes are computed from the most recent stored scan (including the Report-included re-scan if that was used). Do NOT use this for domains the caller hasn't purchased coverage for — you'll get an upgrade_required error that links to the pricing page. Do NOT use this to run or trigger a scan; call scan_domain for anonymous checks. Requires a valid API key.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| issue_id | – | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| recommendations | array | yes | Priority-sorted list of actionable fixes. |
| scanned_at | string | yes | Timestamp of the underlying scan the fixes were computed from. |
| source | string | yes | Which purchased product backed this response — 'monitor' for a subscription, 'report' for a one-off Report. |
No examples provided.
list_monitored_domains ~168
Returns the full list of domains under continuous SiteGuardian monitoring for the authenticated account. Each entry includes the domain, current security grade (A–F), timestamp of the last completed scan, and a relative dashboard URL. Use this when the user asks what they are monitoring, wants an inventory summary, or needs to look up a specific domain's exact spelling before calling get_domain_status / get_drift_events / get_fix_recommendations. The list is scoped entirely by the API key — there is no filter parameter to widen or narrow the result. Do NOT use this to enumerate domains the user does not own or monitor — it only returns their own inventory. Do NOT call it to trigger a scan (it does not); use scan_domain for one-off checks. Requires a valid API key.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| domains | array | yes | – |
No examples provided.
scan_domain ~179
Runs a free one-off security scan of the given domain and returns its grade (A–F), scan timestamp, and up to three top-priority issues with a permalink to the full report on siteguardian.io. Use this when the user asks for a quick security check of a domain that is NOT yet under SiteGuardian monitoring, or when they want a fresh assessment before subscribing. Results are cached for two hours, so repeated calls about the same domain return the same snapshot and mark it with cached=True. Do NOT use this for domains already under monitoring by the user — call get_domain_status instead for the account-scoped view with framework tags. Do NOT use this to batch-scan many domains as a competitive-intelligence tool; per-source-IP and per-target rate limits bound usage. This tool does not require authentication.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| cached | boolean | yes | True when the result was served from the 2-hour ScanLog cache. |
| domain | string | yes | – |
| grade | string | yes | – |
| report_url | string | yes | Permalink to the full scan report on siteguardian.io. |
| scanned_at | string | yes | – |
| score | integer | yes | – |
| top_issues | array | yes | Up to 3 top-priority issues found. Sorted high → medium → low. |
No examples provided.
What is the SiteGuardian MCP server?
SiteGuardian is an MCP server listed in the public MCP registry as io.github.gweber/siteguardian. EU-hosted website monitoring + 17-framework compliance MCP. One anonymous tool, four authenticated. This page covers its hosted endpoint (https://mcp.siteguardian.io).
Is the SiteGuardian MCP server safe to use?
SiteGuardian scores 81 out of 100 on VerifyMCP. 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 SiteGuardian MCP server expose?
SiteGuardian exposes 5 tools: scan_domain, list_monitored_domains, get_domain_status, get_drift_events, get_fix_recommendations. Their descriptions and schemas cost roughly 1,022 tokens of context every time the server is loaded.
Does the SiteGuardian MCP server require authentication?
No. We connected to SiteGuardian without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the SiteGuardian MCP server still maintained?
SiteGuardian is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.