guide.capitol/capitolguide
REMOTE · CAPITOL.GUIDE · SCANNED SEP 27
Navigate the U.S. Capitol complex: decode room codes, route buildings, check access, amenities.
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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 9 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability77
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1088 tokens (~120/item across 9 items; 9 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 Coverage98
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 93% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities20
- Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28. See how to fix → Fail
How do I install the guide.capitol/capitolguide MCP server?
guide.capitol/capitolguide is a hosted endpoint at https://capitol.guide/mcp, 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 · capitol.guide
claude mcp add --transport http guide-capitol-capitolguide 'https://capitol.guide/mcp'
{
"mcpServers": {
"guide-capitol-capitolguide": {
"url": "https://capitol.guide/mcp"
}
}
} {
"servers": {
"guide-capitol-capitolguide": {
"type": "http",
"url": "https://capitol.guide/mcp"
}
}
} [mcp_servers.guide-capitol-capitolguide] url = "https://capitol.guide/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"guide-capitol-capitolguide": {
"type": "remote",
"url": "https://capitol.guide/mcp",
"enabled": true
}
}
} openclaw mcp add guide-capitol-capitolguide --url 'https://capitol.guide/mcp' --transport streamable-http
mcp_servers:
guide-capitol-capitolguide:
url: "https://capitol.guide/mcp" {
"McpServers": {
"guide-capitol-capitolguide": {
"Transport": "http",
"Url": "https://capitol.guide/mcp"
}
}
} assistant mcp add guide-capitol-capitolguide -t streamable-http -u 'https://capitol.guide/mcp'
{
"mcpServers": {
"guide-capitol-capitolguide": {
"type": "http",
"url": "https://capitol.guide/mcp"
}
}
} 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.
- 25 Sept 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
- 26 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
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 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
- 5 Aug 26 0
- HSTS header: unverified → fail ▼ security
- Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 9 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. security
- 4 Aug 26 0
- HSTS header: fail → unverified ▼ security
- Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. security
- 31 Jul 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
- 27 Jul 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
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 27 Sept 2026 · Probed https://capitol.guide/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=capitol.guide | CN=WE1,O=Google Trust Services,C=US | 8 Aug 2026 | 6 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | fc70486a79454ebb0ecff1fc2ebfc8cb |
| SANs: capitol.guide, *.capitol.guide | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of capitol.guide. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| guide. | present | 49501 | 8 | Verified |
| capitol.guide. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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://capitol.guide/mcp | Verified | 200 | |
| http (plaintext) | http://capitol.guide/mcp | Inconclusive | 405 |
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 →
accessible_route ~130
Step-free / accessible directions between two points in the Capitol complex by mobility profile (wheelchair, limited_mobility, stroller, low_vision). Routes over elevators/ramps only, avoids stairs, and surfaces OCAS accommodation contacts. Use this instead of route_between when step-free matters.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Origin: room code, building name, or Metro station / landmark (e.g. 'Union Station') |
| mobility_profile | string | – | Mobility profile (default: any step-free) |
| to | string | yes | Destination: room code, building name, or Metro station / landmark |
No output schema declared.
No examples provided.
capitolguide_prep ~43
Pre-flight readiness check. Run before any other tool. Verifies secrets, KV, DB connectivity, and KB version + freshness. Returns a structured readiness report.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
check_access ~100
What access a visitor needs for a zone of the Capitol complex: (visitor_type × zone) → allowed?, credential, escort, lead time, required docs, security entrance, and the granting authority. INFORMS, never grants — final authority is the member office / Capitol Police / Secret Service. Rules are volatile and live-source-stamped.
| Name | Type | Req | Description |
|---|---|---|---|
| visitor_type | string | yes | Who is visiting |
| zone | string | yes | Which area of the complex |
No output schema declared.
No examples provided.
find_room ~146
Find a Capitol office by ROOM CODE (e.g. 'SH-217', '2310 Rayburn', '167 Russell', 'H-232'), by MEMBER NAME (e.g. 'Cornyn', 'Ted Cruz', 'Womack'), or by COMMITTEE ('Senate Judiciary', 'Ways and Means', 'House Armed Services'). A room code returns the decoded location plus who currently holds it; a name returns that member's current office; a committee returns its office / principal hearing room. Member & committee assignments are the 119th Congress (volatile, live-source-stamped).
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | A room code/address, or a member's name |
No output schema declared.
No examples provided.
nearby ~103
Nearest restroom, exit, and food for a specific point — a room code (floor-specific, e.g. the exact nearest bathroom to SH-217), a building name, or GPS coordinates {lat, lon}. Returns specific named venues ranked by distance.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | number | – | Latitude (e.g. from device GPS) — pair with lon |
| location | string | – | Room code or building name |
| lon | number | – | Longitude — pair with lat |
No output schema declared.
No examples provided.
overview ~46
Operational snapshot for the caller's tenant: KB version + freshness, queue depths (itineraries / draft meetings / active nudges), and the recent tool-invocation tail. Read-only.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
plan_day ~109
Optimize a multi-meeting Hill day. Give a list of meetings (each a member name or room code, with an optional time like '10:30a'). Returns a sequenced itinerary: batched by chamber side to minimize cross-campus crossings, the route + minutes between each stop, the cross-campus window flagged, 'leave-by' times when meetings are timed, and warnings for connections too tight to make.
| Name | Type | Req | Description |
|---|---|---|---|
| accessible | boolean | – | Plan step-free routes |
| meetings | array | yes | – |
No output schema declared.
No examples provided.
prohibited_items ~120
What you cannot bring into an area of the Capitol complex (security screening). zone: 'capitol_cvc' (the Capitol + Visitor Center — strictest, no food/water), 'gallery' (House/Senate galleries — no phones/cameras), or 'office_building' (the 6 office buildings — food & drink allowed). Always returns the universal weapon/hazard bans too. Volatile — live-source-stamped; confirm at visitthecapitol.gov before you travel.
| Name | Type | Req | Description |
|---|---|---|---|
| zone | string | yes | Which area you're entering |
No output schema declared.
No examples provided.
route_between ~180
Turn-by-turn directions between two points in the Capitol complex. Each point can be a room code, a building name, OR a Metro station / landmark (e.g. 'Capitol South Metro' → '2412 Rayburn', 'Union Station' → '517 Hart', or to the 'Supreme Court' / 'Library of Congress'). Returns an ordered step list with mode (walk/tunnel/subway), minutes, and a flag wherever you re-clear security. Set accessible=true for a step-free route (or use accessible_route).
| Name | Type | Req | Description |
|---|---|---|---|
| accessible | boolean | – | Prefer a step-free / accessible route |
| from | string | yes | Origin: room code, building name, or Metro station / landmark (e.g. 'Capitol South Metro') |
| to | string | yes | Destination: room code, building name, or Metro station / landmark |
No output schema declared.
No examples provided.
What is the guide.capitol/capitolguide MCP server?
guide.capitol/capitolguide is an MCP server listed in the public MCP registry as guide.capitol/capitolguide. Navigate the U.S. Capitol complex: decode room codes, route buildings, check access, amenities. This page covers its hosted endpoint (https://capitol.guide/mcp).
Is the guide.capitol/capitolguide MCP server safe to use?
guide.capitol/capitolguide scores 71 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 guide.capitol/capitolguide MCP server expose?
guide.capitol/capitolguide exposes 9 tools: capitolguide_prep, overview, find_room, route_between, accessible_route, and 4 more. Their descriptions and schemas cost roughly 977 tokens of context every time the server is loaded.
Does the guide.capitol/capitolguide MCP server require authentication?
No. We connected to guide.capitol/capitolguide without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the guide.capitol/capitolguide MCP server still maintained?
guide.capitol/capitolguide is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.