MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Data access / search

Charter Boats

Search 14,000+ charter boats with live prices, plus marinas, anchorages, routes and itineraries.

Checks passed
14 / 22

1 failed · 7 not measured

Median response
6137 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
46

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
103
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 148 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name Charter Boats.

  • Pass
    Lists tools

    tools/list returned 46 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 6137 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 11526 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Pass
    Stable tool list

    No tool was removed and no required parameter was added in the last 30 days.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    183 of 251 parameters have a description (73%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-10-10T16:52:47.658563Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Charter Boats

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http charter-boats https://charter.boats/mcp

Capabilities

Tools 46

add_block

Block dates on one of the operator's boats so they cannot be booked. On a partner-synced boat the hold is placed on that partner too, and with X-Lock on also on the other partner. Returns the stored block and how each hold went.

Discovered
add_calendar

Connect an external calendar to a boat: its events block those dates on charter.boats. Returns the stored source; sync_calendar pulls it at once.

Discovered
add_fee

Add an extra or fee to a boat the operator prices directly. Returns the stored row and `warnings`, other rows it overlaps.

Discovered
add_price

Add a season price to a boat the operator prices directly (pricing source direct). Returns the stored row.

Discovered
compare_boat

One boat against up to 10 closest published boats of the same type in the same country: specs and the all-in weekly price (in `currency`, at max guests, the figure search compares) for each of the next 52 weeks. Pass `id` (a boat), or `boat_type` and `country` (optionally `region`, `city`) to describe one. The specs take search_boats' names: without `id` they describe the boat to compare; with `id` they filter its peers as search_boats would. Only boats open at least one week are compared. `similar_pct` is how alike a peer is: the share of the specs it shares. With `id`, `overlap_pct` is the share of the boat's open weeks the peer is open too. With `id`, `anchor.price` is the boat's weekly figures, a peer's `price` is its figure minus the boat's (its own in the weeks listed in `absolute_weeks`), and a peer carries its `region`, `city`, `same` (the fields it shares with the boat) and only the specs that differ, as signed deltas; without `id` every peer carries its own specs and figures. null = not sellable that week; `weeks` gives each check-in date. Use when someone asks how a boat compares with others nearby on price, size or age — an operator benchmarking their own boat included. For what is better or worse about one boat, use get_boat_standouts.

Discovered
create_discount

Create a discount; it comes out of the operator's payout, never out of the platform commission. Returns the stored discount.

Discovered
delete_boat_image

Delete one photo of the boat for good. To take a photo off the listing and keep it, use update_boat_images with disable_id.

Discovered
delete_discount

End a discount: guests can no longer use it; bookings already made keep it.

Discovered
delete_fee

Delete a direct fee row.

Discovered
delete_price

Delete a direct season price; the dates it covered have no price until another row covers them.

Discovered
get_availability

The company's fleet calendar: every boat with its partner links, and every event that takes dates — bookings, options, blocks and synced partner or iCal events — each with its source. Read it before add_block to see what a range already holds.

Discovered
get_boat

One of the operator's boats in full, as its edit page shows it: every editable field, photos with their ids, videos, equipment (hidden items included) and `locked_fields`, the fields MMK or Nausys rewrite on every sync.

Discovered
get_boat_details

Get full details of a specific boat: security deposit, cancellation policy, amenities, fees, seasonal prices, check-in/out times, location details — and the dates it is actually free (priced date ranges plus bookable slots for the year ahead). Use when the user asks about a specific boat, and whenever a boat came back in `named_matches` and they want to know when it IS available. With dates, `stay_price` states Due now, Paid at pickup and Total first, then the charter, its discounts and the deposits.

Discovered
get_boat_standouts

What stands out about ONE boat for one week, measured against similar boats: its pros and its cons, each with how it compares ("47.9 ft (better than 99%)", "€2000 security deposit (typical €1700)", "Rare kit: [0.8%] Cool Box" — n% of those boats have it). Use when the guest asks what is special about a boat, what the catch is, why it is cheap or dear, or how it compares with others. It measures build year, length, cabins, bathrooms, guests, the security deposit and kit — and, with date_from, check-in and check-out times, the changeover day and the open weeks left; any of those it does not list is ordinary among the boats in `compared_with`, so do not sell it as an edge or a catch. Other fees are not compared. Kit is measured two ways and both hold: get_boat_details gives each item its [n%] across the whole fleet, this tool what is rare among boats like it. `rare_kit` lists that rare kit as data, most useful first, each with `useful_score` (1-5: how much it changes a charter week for the people aboard). `note` says whether an absence means "ordinary" or that nothing could be compared.

Discovered
get_booking

One booking in full: stage (as in list_bookings), dates, guest, price lines, the operator's payout and `payout_schedule`, the payments coming to the operator with their due dates (empty until the booking is paid). Read-only.

Discovered
get_cancellation_limits

What the company's payment schedule means for its cancellation policy: per boat source, the share paid in advance and how many days before the charter the rest is due, with the largest refund each notice period covers from money already collected. Read beside get_company's `cancel_refund_percent` and `cancel_refund_days`. `policy_applies` false: the company has no MMK or Nausys boat, so its policy governs nothing and cannot be changed.

Discovered
get_company

The company profile as its settings page holds it: public profile, contact, bank, tax and invoicing details, the cancellation policy (`cancel_refund_percent` refunded when the guest cancels at least `cancel_refund_days` before the charter), the X-Lock switch (in `settings`) and the member and boat counts.

Discovered
get_earnings

The company's earnings: total and monthly payouts, payouts still pending on accepted bookings, and the latest bookings, in the currency the operator is paid in.

Discovered
get_location_details

Get full details of a marina, anchorage or bay by ID: description, amenities, contact, boat count and cheapest day rate, PLUS what only we know from tracked AIS traffic — how busy it is in each month of the year, how boats use it (share of overnight visits, typical day-stop length, what time it fills up), whether it is a hidden gem, the places boats actually sail to from there, most-travelled first with the share of the tracked trips each one takes and an estimated passage time, and the nearest bookable base for a spot with no fleet of its own. Use when the user is viewing or asks about a specific place, asks when it is quiet, or asks where to go next from one. Busyness compares a place to its own peak month, never to another place.

Discovered
get_opportunities

The company's Opportunities, as the dashboard's Analysis page shows them, read-only. `boats`: every published boat in the dashboard's order (the charted ones first, then by open weeks), with `open_weeks`, `vs_similar_pct` and `compare_url`, its public compare page. `vs_similar_pct` is how far the boat's weekly price sits over (positive) or under (negative) similar boats, as a median over the weeks it can be sold, each week against the median of the other operators' boats among up to 10 boats most like it of the same type in the same country, where at least 3 of them are priced (null: no week to compare). `price_suggestions`, up to five: `no_prices` (boats with no priced week in the next 12 months), `under` (a boat 15% or more under similar boats, with its widest week: `week`, `own`, `similar`), `over` (a run of two or more weeks 15% or more over them: `from`, `to` and the `own` and `similar` weekly ranges). `source_checks`, up to five: `feature` (kit sold as an extra but missing from the boats' equipment, so guests filtering for it do not see them), `photos` (boats with under half the photos similar boats have; `similar` is their median), `standout` (what Mermaid and the compare page tell guests a boat trails similar boats on). Figures are weekly totals in EUR, all in at max guests. Empty lists mean nothing to suggest.

Discovered
get_poi_details

Get full details of a point of interest by ID: description, opening hours, address, contact, nearby marinas, special offers. Use when user is viewing or asks about a specific POI. POIs carry NO rating or review count — do not claim one or ask the guest to check it.

Discovered
get_pricing

The season prices of the fleet: per boat, every week-price row with its id, date span (month/day, repeating every year), `price_per_day` and `source`. Rows with `source` mmk or nausys come from the partner and change there; rows with `source` direct are the operator's to edit with add_price, update_price and delete_price.

Discovered
get_trip_details

Get full details of a sailing itinerary/trip by ID: day-by-day stops, distances, activities, highlights, notes. Use when user is viewing or asks about a specific trip.

Discovered
list_boat_fees

Every extra and fee row of a boat, as its edit page lists them: amount, period, whether it is required, how it is collected, and its `source`. Rows with `source` direct are the operator's to edit.

Discovered
list_boats

The operator's own fleet: every boat of each company the key holder belongs to, published or not, with its company's name, specs, pricing source, changeover settings and photos. Start here: it gives the boat ids and company ids every other operator tool takes. An empty list means the account belongs to no company.

Discovered
list_bookings

Every booking on the operator's boats, newest charter first. `status` and `payment_status` give the stage: `waitlist` is On waitlist (queued behind another hold), unpaid `pending` or `accepted` is an Option that lapses at `hold_expires_at`, and a booking with money in is booked. Each row states the price the guest pays, the discounts and the operator's own payout, in the currency of `payout_money`. Read-only: bookings are handled on the dashboard. An empty list means no bookings yet.

Discovered
list_calendars

The external calendars (iCal feeds, a Google Calendar by its secret iCal address) connected to one boat, with their sync state. MMK and Nausys are linked automatically and are not listed here. An empty list means none is connected to that boat.

Discovered
list_discounts

The company's active discounts: codes guests type at checkout, automatic ones, and the pay-in-full discount, each with its value, booking window (`start_date`..`end_date`), stay window (`stay_from`..`stay_to`) and the boats it covers (`all_boats`, else `boat_ids`). An empty list means the company runs no discount.

Discovered
remove_block

Remove a block the operator placed, freeing its dates and releasing the partner holds it placed.

Discovered
remove_calendar

Disconnect an external calendar: its blocked dates are freed, and the holds X-Lock placed for them on the partner calendars are released.

Discovered
search_boats

Search charter boats by location, name, type, dates, capacity, budget. The response `total_matching` is the FULL count of matching boats — results are the top `limit` of those, so phrase counts from it ("8 of 48 available") and re-call with a higher limit when the guest wants more. Pass the guest's dates as they gave them. Each boat sets its own changeover day (`checkinout_days`) and its own minimum stay (`min_charter_days`), so the week a boat can actually be sold may not start on the day asked for — `price_summary` always names the real week, and it is the one sentence to quote, as it stands: the boat page's own Total for the stay it names, for the `guests` given (else the boat's max guests), all in (charter, every required fee charged now or at pickup, the 45 EUR platform fee; refundable deposits never), and the discount applied (the percent the site's card shows); a stay other than a week names its dates and length ("for Jun 19–22 (3 nights), 4 guests"); with no dates it is the boat's lowest week ("From", at max guests, precomputed). `list_price` holds the same figures — `total` (the stay's), `per_day` (that total per day for the boat; `from` when no dates were given), `party` (the guests it is priced for), `original_per_day` and `discount_pct` when a discount applies. For Due now, Paid at pickup and each deposit by name call get_boat_details with the dates. No total here includes an optional extra — `price_summary`, `list_price` and the `total_max` screen all leave out a skipper where `skippered` is 'optional', a hostess, a cook — so for a total with one, call get_boat_details with the dates before you answer and add the fee it lists under `fees.optional`, or say the boat lists none — never a typical or estimated rate, and call no budget met or exceeded on one. When `boats` is short, `alternatives` holds the closest boats, and each one's `relaxed` names what it loosened: `dates` (the week either side), `place` (a nearby base), `model` (another model of the same make), `name` (a boat carrying one word of the name). Say which — they are not what was asked for, and they count toward no total. List them AFTER the matches, in their own list, under a one-line heading naming what was loosened ("Close alternatives — the week either side"): never mixed into the same list. That heading is what splits the two on every card surface, so without it an alternative is rendered exactly like a match. `alternative_inventory` tells you which kind of "no" you are giving: `total_boats` 0 means this coast does not have that boat, while `total_boats` high with `available_nearby_or_within_7_days` 0 means it is the week, not the place. If a plain marina search has neither matches nor alternatives, `listed_unavailable` may carry published boats visibly listed at that exact marina. They are not bookable results: quote no price, explain the supplied reason, and offer an availability alert. A search with NO dates and NO price cap lists every published boat that matches, so `boats` can end with entries we hold no prices for: from `unpriced_start_index` onward every one carries `bookable_as_searched: false` and a `not_offered_because` saying so — they count as matches, but cannot be booked or quoted, so name them, link them and offer an alert without ever stating a price. When you searched a boat by NAME, `named_matches` lists published boats carrying that name that this search could not offer — wrong dates, wrong place, or no prices loaded. Everything bookable AS SEARCHED is in `boats`; nothing in `named_matches` is — though one whose only reason is the place or the dates may still be sellable, which is what its `not_offered_because` tells you. Never say a named boat does not exist while it is in that list: name it, give its reason, and use `get_boat_details` for the dates it IS free. `name_not_found` means the opposite and is certain — that name is in no published boat anywhere. `alert_query` + `alert_horizon` feed availability_alert. Both are absent when this search cannot be expressed on the website (`search_url_unavailable` says so) — then there is no link to give and no alert to set: say so rather than linking charter.boats/search, which would show boats this answer excluded.

Discovered
search_content

Search the charter.boats help articles and Q&A. Use it for any question from a guest, operator, agent or affiliate about how charter.boats works or how to do something on it. For developer questions about our API, use type=api to search the API docs at docs.charter.boats.

Discovered
search_locations

Find marinas, harbours and anchorages three ways: by NAME (q), by POPULARITY within an area (region/country/city — ranked on observed AIS vessel traffic for a month), or by REACH from a place you already have (`from` + `within_nm`) — where boats are actually recorded sailing to from there, with measured passage times. Use `from` for "where can I sail from X", "what is a day sail from X", "somewhere quieter nearby". Provide q, or an area, or from.

Discovered
search_pois

Find restaurants, fuel, groceries, attractions near a location, or search by POI name. POIs carry no ratings — rank and describe them by what they are and how close they are.

Discovered
search_routes

Find sailing passages between destinations with distance and difficulty.

Discovered
search_trips

Find existing curated sailing itineraries by location, name, duration, activities.

Discovered
set_cancellation_policy

Set the company's cancellation policy, company owners only: a guest who cancels at least `cancel_refund_days` before the charter gets `cancel_refund_percent` of the charter price back. The policy applies to the company's MMK and Nausys bookings only; its direct boats follow charter.boats terms, so a company whose boats are all direct is refused. Read get_cancellation_limits first. Returns the company as it now stands.

Discovered
set_cross_lock

Switch X-Lock for a company, company admins and owners only. With X-Lock on, every block, option or booking placed on one partner calendar (MMK or Nausys) also places a hold on the boat's other partner calendar. `sync_existing` true also places or releases those holds for the bookings and blocks already there. Returns the company as it now stands. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered
set_equipment_visibility

Hide an equipment item from the boat's public listing and search, or show it again; the same item under another wording follows it. Use the item's name as get_boat lists it in `equipment_items`. Returns the new state.

Discovered
sync_calendar

Pull one external calendar now. Returns how many events it brought in, or the error the feed gave.

Discovered
update_boat

Change details of one of the operator's boats; only the fields sent change, and a field listed in `locked_fields` is ignored because the partner sync owns it. The answer carries `is_published` and `missing`, what the boat still lacks to be listed. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered
update_boat_images

Hide one photo, show a hidden one again, or set the photo order (the first is the cover); send one of the three. Photo ids come from get_boat. Returns the boat with its photos as they now stand. New photos are uploaded on the boat's edit page.

Discovered
update_company

Change company details; only the fields sent change. Any member may change the public profile; contact email, bank, tax and invoicing details are the owner's, and a request naming one from anyone else is refused whole. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered
update_discount

Change a discount; only the fields sent change. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered
update_fee

Change a direct fee row; only the fields sent change. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered
update_price

Change a direct season price; only the fields sent change. Read the current value with its read tool first; this call returns the value as it now stands.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected148 ms46
Connected12125 ms46