Transport & travel
REMOTE · FOURZEROTWO.SI
Airports, runways and frequencies worldwide, tides, UK road collisions and London transport.
Available components
Last scanned (16 hours ago)
Scores higher than 79% of remote servers
Reachable. Last reached 22 Oct 2026.
Category Maps and Location
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 Security80
- 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
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability72
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 2479 tokens (~79/item across 31 items; 31 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management33
- Stability observed for 10 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- 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 31 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 32 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
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.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 12 Oct 26 73
First indexed and scored.
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 Oct 2026 · Probed https://fourzerotwo.si/mcp/v/transport
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=fourzerotwo.si | CN=WE1,O=Google Trust Services,C=US | 10 Oct 2026 | 8 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 7083f50b7ee269bb0ef93ba441295bdf |
| SANs: fourzerotwo.si | ||||||
| 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 fourzerotwo.si. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| si. | present | 42378 | 13 | Verified |
| fourzerotwo.si. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| x-frame-options | deny |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://fourzerotwo.si/mcp/v/transport | Verified | 200 | |
| http (plaintext) | http://fourzerotwo.si/mcp/v/transport | HTTPS enforced | 301 | https://fourzerotwo.si/mcp/v/transport |
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 →
airports__airport Airports Worldwide: Airport by code ~82
An airport by ICAO, IATA or ident: name, type, town, country and region, location, elevation, runways and frequencies. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | ICAO (EGLL), IATA (LHR) or OurAirports ident |
Structured output declared, but exposes no named fields.
No examples provided.
airports__country Airports Worldwide: Airports in a country ~55
Airport counts by type, the large airports and the regions for a country. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | yes | 2-letter country code |
Structured output declared, but exposes no named fields.
No examples provided.
airports__frequencies Airports Worldwide: Radio frequencies ~72
An airport's radio frequencies (tower, ground, ATIS, approach…) in MHz. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | ICAO (EGLL), IATA (LHR) or OurAirports ident |
Structured output declared, but exposes no named fields.
No examples provided.
airports__navaids-near Airports Worldwide: Navaids near a point ~125
VORs, NDBs, DMEs and other navaids within a radius of a point, with frequency and associated airport. Free within the daily allowance, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | string | – | Latitude (or give a UK postcode) |
| limit | integer | – | Max results (default 20) |
| lng | string | – | Longitude |
| postcode | string | – | UK postcode instead of lat/lng |
| radius_km | integer | – | Radius in km (default 50) |
Structured output declared, but exposes no named fields.
No examples provided.
airports__near Airports Worldwide: Airports near a point ~150
Airports (large/medium/small by default) within a radius of a point or UK postcode, nearest first. Free within the daily allowance, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | string | – | Latitude (or give a UK postcode) |
| limit | integer | – | Max results (default 10) |
| lng | string | – | Longitude |
| postcode | string | – | UK postcode instead of lat/lng |
| radius_km | integer | – | Radius in km (default 50, max 300) |
| scheduled | string | – | 1 = scheduled passenger service only |
| type | string | – | large | medium | small | heliport | … |
Structured output declared, but exposes no named fields.
No examples provided.
airports__runways Airports Worldwide: Runways ~76
An airport's runways: length, width, surface, lighting and each end's identifier, heading and elevation. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | ICAO (EGLL), IATA (LHR) or OurAirports ident |
Structured output declared, but exposes no named fields.
No examples provided.
airports__search Airports Worldwide: Search airports ~121
Find airports by name or town and/or country, optionally by type or scheduled service only; biggest first. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | 2-letter country code |
| limit | integer | – | Max results (default 20) |
| name | string | – | Airport name or town |
| scheduled | string | – | 1 = scheduled passenger service only |
| type | string | – | large | medium | small | heliport | seaplane_base | closed |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__air-quality London Transport: Air quality forecast ~41
London air quality forecast for today and tomorrow. A few free samples a day, then $0.001 USDC per call via x402.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__bike-point London Transport: Cycle dock ~55
Live bikes, e-bikes and empty docks at one station. A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | BikePoint id |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__bike-points London Transport: Cycle docks ~46
Every Santander Cycles docking station with live bike and space counts. A few free samples a day, then $0.002 USDC per call via x402.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__journey London Transport: Plan a journey ~65
Journey options between two places (postcodes, stop ids or "lat,lon"). A few free samples a day, then $0.003 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | yes | Origin |
| to | string | yes | Destination |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__line-arrivals London Transport: Line arrivals ~67
Live arrival predictions for every stop on a line. A few free samples a day, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| line | string | yes | Line id, e.g. "victoria", "elizabeth", "northern" |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__line-status London Transport: Line status ~64
Live status and disruption for one line. A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| line | string | yes | Line id, e.g. "victoria", "elizabeth", "northern" |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__mode-status London Transport: Status by mode ~65
Live status of every line for a mode (tube, overground, elizabeth-line, dlr, tram, bus). A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| mode | string | yes | Mode |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__road-disruption London Transport: Road disruptions ~60
Current disruption on a road corridor, e.g. "a2", "a406". A few free samples a day, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| road | string | yes | Road id |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__road-status London Transport: Road corridor status ~40
Live status of major London road corridors. A few free samples a day, then $0.001 USDC per call via x402.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__stop London Transport: Stop details ~72
Lines, modes, facilities and child stops of a station. A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| stop | string | yes | StopPoint id (NaPTAN), e.g. "940GZZLUOXC" (Oxford Circus) |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__stop-arrivals London Transport: Stop arrivals ~71
Live arrival predictions at a stop or station. A few free samples a day, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| stop | string | yes | StopPoint id (NaPTAN), e.g. "940GZZLUOXC" (Oxford Circus) |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__stop-search London Transport: Search stops ~47
Find stations and stops by name. A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| q | string | yes | Name |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__stops-near London Transport: Stops near a point ~73
Stations and stops within a radius of a point. A few free samples a day, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | string | yes | Latitude |
| lon | string | yes | Longitude |
| radius | integer | – | Metres (default 200) |
Structured output declared, but exposes no named fields.
No examples provided.
london-transport__tube-status London Transport: Tube status ~39
Live status of every Tube line. A few free samples a day, then $0.001 USDC per call via x402.
Input schema present but exposes no named parameters.
Structured output declared, but exposes no named fields.
No examples provided.
tides__conditions US Tides & Water Levels: Station conditions now ~75
Latest water temperature, air temperature, wind and air pressure reported at a station (whichever it measures). Free within the daily allowance, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| station | string | yes | NOAA CO-OPS station id |
| units | string | – | metric (default) | english |
Structured output declared, but exposes no named fields.
No examples provided.
tides__predictions US Tides & Water Levels: High and low tides ~121
Predicted high and low tide times (local) and heights for up to 7 days from today. Free within the daily allowance, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| datum | string | – | MLLW (default) | MLW | MSL | MHW | MHHW | NAVD |
| days | integer | – | Days (1–7, default 2) |
| station | string | yes | NOAA CO-OPS station id |
| units | string | – | metric (default) | english |
Structured output declared, but exposes no named fields.
No examples provided.
tides__search US Tides & Water Levels: Find tide stations ~59
Search NOAA tide stations by name and/or state. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | – | Station name contains |
| state | string | – | 2-letter state |
Structured output declared, but exposes no named fields.
No examples provided.
tides__station US Tides & Water Levels: Tide station details ~56
A station's location, time zone, products offered and tidal datums. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| station | string | yes | NOAA CO-OPS station id |
Structured output declared, but exposes no named fields.
No examples provided.
tides__stations-near US Tides & Water Levels: Tide stations near a point ~97
NOAA tide-prediction stations within a radius (default 50 km) of a point, nearest first. Free within the daily allowance, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | string | yes | Latitude |
| limit | integer | – | Max results (default 10) |
| lng | string | yes | Longitude |
| radius_km | integer | – | Radius in km (default 50) |
Structured output declared, but exposes no named fields.
No examples provided.
tides__water-level US Tides & Water Levels: Observed water level ~122
Observed 6-minute water levels for the last hours (default 6, max 72) with the latest reading. Free within the daily allowance, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| datum | string | – | MLLW (default) | MLW | MSL | MHW | MHHW | NAVD |
| hours | integer | – | Hours back (default 6) |
| station | string | yes | NOAA CO-OPS station id |
| units | string | – | metric (default) | english |
Structured output declared, but exposes no named fields.
No examples provided.
uk-road-safety__collision UK Road Collisions: Collision by id ~65
One reported collision by its STATS19 index: date, time, severity, vehicles, casualties, road and conditions. A few free samples a day, then $0.001 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Collision index |
Structured output declared, but exposes no named fields.
No examples provided.
uk-road-safety__local-authority UK Road Collisions: Collisions in a local authority ~92
Five-year (or one-year) collision totals for a local authority district by severity and year, road class, speed limit, light, weather, surface and urban/rural. A few free samples a day, then $0.003 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | ONS local authority district code |
| year | integer | – | One year only |
Structured output declared, but exposes no named fields.
No examples provided.
uk-road-safety__lsoa UK Road Collisions: Collisions in a small area ~79
Collisions in a 2021 LSOA (neighbourhood of ~1,500 people) over five years, with the 50 most recent. A few free samples a day, then $0.002 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | LSOA 2021 code |
Structured output declared, but exposes no named fields.
No examples provided.
uk-road-safety__near UK Road Collisions: Collisions near a point ~158
Reported collisions within a radius (default 500 m, max 2 km) of a UK postcode or point over the last five years: totals by severity and year, and the most recent collisions with road, speed limit, light and weather. A few free samples a day, then $0.003 USDC per call via x402.
| Name | Type | Req | Description |
|---|---|---|---|
| lat | string | – | Latitude |
| limit | integer | – | Recent collisions to list (default 20) |
| lng | string | – | Longitude |
| postcode | string | – | UK postcode (or give lat and lng) |
| radius_m | integer | – | Radius in metres (default 500, max 2000) |
| year | integer | – | One year only |
Structured output declared, but exposes no named fields.
No examples provided.
How do I install the Transport & travel MCP server?
Transport & travel is a hosted endpoint at https://fourzerotwo.si/mcp/v/transport, 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 · fourzerotwo.si
claude mcp add --transport http si-fourzerotwo-transport 'https://fourzerotwo.si/mcp/v/transport'
What is the Transport & travel MCP server?
Transport & travel is an MCP server listed in the public MCP registry as si.fourzerotwo/transport. Airports, runways and frequencies worldwide, tides, UK road collisions and London transport. This page covers its hosted endpoint (https://fourzerotwo.si/mcp/v/transport).
Is the Transport & travel MCP server safe to use?
Transport & travel scores 78 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 Transport & travel MCP server expose?
Transport & travel exposes 31 tools: airports__airport, airports__search, airports__near, airports__runways, airports__frequencies, and 26 more. Their descriptions and schemas cost roughly 2,410 tokens of context every time the server is loaded.
Does the Transport & travel MCP server require authentication?
No. We connected to Transport & travel without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Transport & travel MCP server still maintained?
Transport & travel is still listed as active in the MCP registry. We last reached this channel on 22 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.