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

Read-only probes

MCP server · Other

Charter Captain

Discover Lake Michigan charter captains & boats, check availability, get quotes, and book.

Checks passed
11 / 22

3 failed · 8 not measured

Median response
518 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
10

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Outdated check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?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
220
Publisher identityCan the publisher be traced to its source?
312

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 518 ms.

  • Pass
    Valid handshake

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

  • Pass
    Lists tools

    tools/list returned 10 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 518 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 518 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

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

  • Fail
    Tools described

    1 tools have a description shorter than 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    0 of 50 parameters have a description (0%). 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.

  • Fail
    Source repo linked

    No 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 2026-06-26T03:28:48.783584Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Charter Captain

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-captain https://api.chartercaptain.com/mcp/mcp

Capabilities

Tools 10

check_availability

Check a captain's or boat's availability. Provide exactly one of captainSlug or boatId. Omit date to get available dates for the next 90 days; provide both date (YYYY-MM-DD) and durationHours to get bookable time slots for that date. Only departures that have not yet left (Chicago time) are listed, so a past date has no slots. Each slot lists its offeredDurations, and every entry carries the durationId to pass to get_quote, create_booking, or create_boat_rental (null means that length is offered but not bookable through the API). A captain trip that lists harborIds departs only from those harbors (ids as in get_captain's harbors): create_booking refuses any other harbor for that trip. Without harborIds, drive time rules out none of the captain's active harbors.

Discovered
create_boat_rental

Book a bareboat boat rental. A boat with Instant Book on returns a Stripe Checkout link (payment.kind checkout_link) for the charterer to complete payment. For a boat whose owner reviews every request first (get_quote's instantBook: false), a request is sent instead: nothing is charged, the result is a request with the estimated total and deposit, and if the owner accepts, the charterer is emailed a link to pay. Requires captainChoiceRightAcknowledged: true (the charterer affirms their right to choose their own captain). Optionally attach a partner/affiliate code; partnerCode can't be used on a request (PARTNER_CODE_NOT_AVAILABLE_FOR_REQUESTS).

Discovered
create_booking

Book a charter with a captain. A captain with Instant Book on returns a Stripe Checkout link (payment.kind checkout_link) for the charterer to complete payment. A captain who reviews every request first (get_quote's instantBook: false) is sent a request instead: nothing is charged, the result is a request with the estimated total and deposit, and if the captain accepts, the charterer is emailed a link to pay. Optionally attach a partner/affiliate code to credit a referrer; partnerCode can't be used on a request (PARTNER_CODE_NOT_AVAILABLE_FOR_REQUESTS). harborId must be a harbor this captain departs from: one of get_captain's harbors, or any list_harbors harbor when get_captain lists none. create_booking refuses any other harbor with HARBOR_NOT_OFFERED, and that error's harbors field lists the ones the captain departs from.

Discovered
get_boat

Get a boat's full profile by id, enriched with a rating summary and the most recent reviews.

Discovered
get_captain

Get a captain's full profile by tenant slug, enriched with a rating summary and the most recent reviews.

Discovered
get_quote

Get a non-binding price quote (in cents) for a charter or rental. Provide exactly one of captainSlug or boatId, plus durationId and partySize. Pass `date` (YYYY-MM-DD) whenever you know it: the rate then comes from the operator's rate card for that day — weekday vs weekend vs holiday, including any per-date price the operator set — so the quote matches what checkout charges. Without a date, pass pricingTierId instead; the quote then reflects that tier and may differ from checkout for the actual day. Optionally pass a partnerCode to preview a discount. Returns currency, totalCents, depositCents, balanceCents, pricingModel, instantBook, and (when a code is given) a discountPreview. instantBook says what booking does: true → create_booking / create_boat_rental return a Stripe Checkout link; false → the operator reviews every request first, so booking sends them a request instead (nothing is charged until they accept, and partnerCode can't be used — the quote then prices no discount and its discountPreview says PARTNER_CODE_NOT_AVAILABLE_FOR_REQUESTS).

Discovered
list_harbors

List active harbors, each with a count of active captains and listed boats operating there.

Discovered
ping

Health check

Discovered
search_boats

Search listed boats, optionally filtered by harbor, type, minimum capacity, and max hourly price, with sorting and pagination.

Discovered
search_captains

Search bookable charter captains, optionally filtered by harbor, with sorting and pagination. Returns a paginated list with starting price and rating.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected518 ms10