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Canal Nav

REMOTE · MCP.CANALNAV.COM · SCANNED SEP 24

Plan canal routes on Great Britain's waterways: lock-aware timing, live closures, boat-fit checks.

Available components

0 this week 77 Trust /100
Trust breakdown (7 categories)

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 Security57
Transport & Reachability100
Schema Quality & AI Usability66
  • AI-judged instruction clarity (excellent).Pass
  • Context-footprint check failed: tool/resource definitions use about 1731 tokens (~288/item across 6 items; 6 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 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
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 7 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
Install

How do I install the Canal Nav MCP server?

Canal Nav is a hosted endpoint at https://mcp.canalnav.com/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 · mcp.canalnav.com

# add to Claude Code
claude mcp add --transport http com-canalnav-canal-nav 'https://mcp.canalnav.com/mcp'
// .cursor/mcp.json
{
  "mcpServers": {
    "com-canalnav-canal-nav": {
      "url": "https://mcp.canalnav.com/mcp"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "com-canalnav-canal-nav": {
      "type": "http",
      "url": "https://mcp.canalnav.com/mcp"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.com-canalnav-canal-nav]
url = "https://mcp.canalnav.com/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-canalnav-canal-nav": {
      "type": "remote",
      "url": "https://mcp.canalnav.com/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add com-canalnav-canal-nav --url 'https://mcp.canalnav.com/mcp' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  com-canalnav-canal-nav:
    url: "https://mcp.canalnav.com/mcp"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "com-canalnav-canal-nav": {
      "Transport": "http",
      "Url": "https://mcp.canalnav.com/mcp"
    }
  }
}
# add to Vellum
assistant mcp add com-canalnav-canal-nav -t streamable-http -u 'https://mcp.canalnav.com/mcp'
// mcp.json
{
  "mcpServers": {
    "com-canalnav-canal-nav": {
      "type": "http",
      "url": "https://mcp.canalnav.com/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

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.

  • 30 Aug 26 +1
    • Stability: 0.97 → pass security
  • 28 Aug 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

  • 26 Aug 26 75
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → 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
  • 1 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
  • 31 Jul 26 0

    First indexed and scored.

Diagnostics

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 24 Sept 2026 · Probed https://mcp.canalnav.com/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=canalnav.com CN=WE1,O=Google Trust Services,C=US 27 Aug 2026 25 Nov 2026 ECDSA 256 ECDSA-SHA256 524adeda4dcf3a97131140c510e3a6f9
SANs: canalnav.com, *.canalnav.com
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 mcp.canalnav.com. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
com. present 19718 13 Verified
canalnav.com. 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://mcp.canalnav.com/mcp Verified 200
http (plaintext) http://mcp.canalnav.com/mcp HTTPS enforced 301 https://mcp.canalnav.com/mcp
MCP tools · 6 exposed · ~1,589 tokens

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 →

Tool Tokens
find_place ~111

Look up a place name on the British inland waterway network and return matching locations with coordinates (marinas, moorings, water points and other waterside facilities). Use it to disambiguate a place before calling plan_route or plan_round_trip, or to get coordinates for a known spot. Results are waterway locations only; it is not a general geocoder.

NameTypeReqDescription
namestringyesPlace or facility name to search for, e.g. "Braunston" or "Aston Marina".

No output schema declared.

No examples provided.

get_closures ~214

Live closure, stoppage and restriction notices for the inland waterways of Great Britain, covering every GB navigation authority: Canal & River Trust, Environment Agency, Scottish Canals, Broads Authority, Bridgewater, Middle Level, River Wey, Basingstoke and more, not just CRT. Search near a place (name or "lat,lon", with an optional radius) or by waterway name (e.g. "Oxford Canal"). Returns active and upcoming notices with dates, the responsible authority, whether each one blocks navigation, and links for detail. Data refreshes from the authorities' published notices, so reopen dates reflect the latest updates.

NameTypeReqDescription
placestring–A place name or "lat,lon" coordinates to search around. Give this or waterway.
radius_kmnumber–Search radius around the place in km. Default 25.
waterwaystring–A waterway name to match notices against (e.g. "Grand Union Canal"). Give this or place.

No output schema declared.

No examples provided.

plan_round_trip ~372

Plan return-to-start cruises from a point on the inland waterways of Great Britain, sized to fit a number of days. Returns several options: circular loops where the canal network offers one (canal "rings"), plus out-and-back and fewest-locks alternatives, each with distance, lock count, day-by-day plan and suggested overnight moorings. Timing is lock-aware and closures from every GB navigation authority are flagged on each option. Give boat dimensions to get fit warnings, and routes touching tidal water carry a tidal safety warning. The start can be a place name or "lat,lon" coordinates.

NameTypeReqDescription
boat_air_draughtnumber|string–Boat air draught (height above the waterline, for bridges and tunnels). Metres or feet/inches.
boat_beamnumber|string–Boat beam (width). Metres by default (e.g. 2.08), or feet/inches (e.g. "6'10\"").
boat_draughtnumber|string–Boat draught (depth below the waterline). Metres or feet/inches.
boat_lengthnumber|string–Boat length. Metres by default (e.g. 17.4), or a feet/inches string (e.g. "57ft").
cruising_hours_per_daynumber–Cruising hours per day. Default 6.
datestring–Start date (YYYY-MM-DD) for closure checking. Defaults to today.
daysintegeryesNumber of days the round trip should fit in.
lock_minutesnumber–Minutes to work through one lock. Default 15.
startstringyesStart (and finish) point: a place name on the waterways or "lat,lon" coordinates.

No output schema declared.

No examples provided.

plan_route ~478

Plan a boat journey between two points on the inland waterways of Great Britain (canals and navigable rivers). The route follows the water itself, not roads. It counts every lock and estimates cruising time from realistic boat speed plus time per lock. Live closures and stoppages from every GB navigation authority (Canal & River Trust, Environment Agency, Scottish Canals, Broads Authority and others) are routed around automatically, and when a dated closure blocks the natural line the result compares waiting for it to reopen against taking the detour. Give boat dimensions to get per-waterway fit warnings (too long, too wide, too deep, too tall for a waterway on the route). Routes that cross tidal water carry a tidal safety warning. Places can be names (resolved on the waterway network) or "lat,lon" coordinates. If a name matches several distinct locations the tool returns the candidates instead of guessing; call again with the chosen one.

NameTypeReqDescription
boat_air_draughtnumber|string–Boat air draught (height above the waterline, for bridges and tunnels). Metres or feet/inches.
boat_beamnumber|string–Boat beam (width). Metres by default (e.g. 2.08), or feet/inches (e.g. "6'10\"").
boat_draughtnumber|string–Boat draught (depth below the waterline). Metres or feet/inches.
boat_lengthnumber|string–Boat length. Metres by default (e.g. 17.4), or a feet/inches string (e.g. "57ft").
cruising_hours_per_daynumber–Cruising hours per day, used to split the journey into days with suggested overnight moorings. Default 6.
datestring–Departure date (YYYY-MM-DD) for closure checking. Defaults to today.
fromstringyesStart point: a place name on the waterways (e.g. "Braunston Marina") or "lat,lon" coordinates.
lock_minutesnumber–Minutes to work through one lock. Default 15. Experienced crews may use 10, single-handers 20 or more.
tostringyesDestination: a place name or "lat,lon" coordinates.

No output schema declared.

No examples provided.

search_directory ~145

Search Canal Nav's directory of waterside businesses on the British inland waterways: marinas, chandleries, boat hire, boatyards, pump-out and services, fuel, moorings, surveyors, brokerage, and canalside food and pubs. Filter by free text, category, or proximity to a place. Listings marked unclaimed can be claimed for free by the business owner at https://canalnav.com/.

NameTypeReqDescription
categorystring–Directory category to filter by.
nearstring–A place name or "lat,lon" to search around (approx. 15 km).
querystring–Free-text search over business names and descriptions.

No output schema declared.

No examples provided.

will_my_boat_fit ~269

Check boat dimensions against the published maximum craft dimensions for a named British waterway (length, beam, draught and air draught, from Canal & River Trust published figures covering the full CRT network). Returns a per-dimension verdict quoting the limit. Draught and headroom vary with water level and silting, so treat the answer as advisory. For a whole journey, use plan_route with boat dimensions instead: it checks every waterway along the route.

NameTypeReqDescription
boat_air_draughtnumber|string–Boat air draught (height above the waterline, for bridges and tunnels). Metres or feet/inches.
boat_beamnumber|string–Boat beam (width). Metres by default (e.g. 2.08), or feet/inches (e.g. "6'10\"").
boat_draughtnumber|string–Boat draught (depth below the waterline). Metres or feet/inches.
boat_lengthnumber|string–Boat length. Metres by default (e.g. 17.4), or a feet/inches string (e.g. "57ft").
waterwaystringyesWaterway name, e.g. "Ashby Canal" or "Llangollen Canal".

No output schema declared.

No examples provided.

Common questions

What is the Canal Nav MCP server?

Canal Nav is an MCP server listed in the public MCP registry as com.canalnav/canal-nav. Plan canal routes on Great Britain's waterways: lock-aware timing, live closures, boat-fit checks. This page covers its hosted endpoint (https://mcp.canalnav.com/mcp).

Is the Canal Nav MCP server safe to use?

Canal Nav scores 77 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 Canal Nav MCP server expose?

Canal Nav exposes 6 tools: plan_route, plan_round_trip, get_closures, will_my_boat_fit, find_place, search_directory. Their descriptions and schemas cost roughly 1,589 tokens of context every time the server is loaded.

Does the Canal Nav MCP server require authentication?

No. We connected to Canal Nav without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the Canal Nav MCP server still maintained?

Canal Nav is still listed as active in the MCP registry. We last reached this channel on 24 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.