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 · Other

Cast the Water

Read-only fish stocking, waters and conditions data for US lakes from Cast the Water

Checks passed
11 / 22

3 failed · 8 not measured

Median response
100 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
11

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked . Not enough checks yet
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 100 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name Cast the Water water bodies.

  • Pass
    Lists tools

    tools/list returned 11 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 100 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 100 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

  • 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

    12 of 39 parameters have a description (31%). The bar is 80%.

  • Fail
    Safety hints

    8 tools set neither readOnlyHint nor 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 2026-11-12T16:56:30.503558Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Cast the Water

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 cast-the-water https://castthewater.com/mcp

Capabilities

Tools 11

find_nearby

Find water bodies near a lat/lon in states open for indexing. At most 25 hits from a bbox query. Filters: radius, species, min acres, stocked-only, recent stocking window, optional amenity feature flag.

Discovered
get_conditions

Conditions for a water in a state open for indexing. Reads the existing forecast and USGS cache only: a miss is unavailable, with the canonical page URL. No live fetch.

Discovered
get_nearby_waterbodies

Nearby water bodies in states open for indexing, for internal linking / trip planning. A closed state is not available.

Discovered
get_recent_stockings

Recent stocking events in one open state. Optional county and species. since_days defaults to 14 and must be from 1 to 90. Estimated dates keep the around wording and are not exact days. At most 25 events.

Discovered
get_species

Likely natural species (USGS GAP HUC8) and survey abundance rows for a water body in a state open for indexing. A closed state is not available.

Discovered
get_stocking_history

Stocking events for a water body in a state open for indexing. Year-only dates are 'sometime in YYYY' with estimated true. An around date stays an estimate.

Discovered
get_water

One public water by id or slug: stocking history, species, and depth or water level when we have them, plus its castthewater.com page URL. A closed state is not available.

Discovered
get_waterbody

Full water body detail for a state open for indexing: identity, size/shoreline, structured nearest_town + nearest_town_label, stocking, natural species, surveys, editorial content (incl. gauge_relationship / gauge_notes), gallery, regs link, gauge. Pass id or seo_path (state/county/slug). A closed state is not available. Admin listing/writes are HTTP/Central only.

Discovered
search_places

Search US census places (cities/towns) by name in states open for indexing. Use the lat/lon of a hit with find_nearby.

Discovered
search_waterbodies

Search water bodies by name (or nearest town name). Optional state filter. Only states open for indexing are returned. Prefer this over county browse.

Discovered
search_waters

Search public waters by name. Optional two-letter state. Only states open for indexing are returned, each with its castthewater.com page URL. At most 25 hits.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 90 days.
CheckedResultResponseTools
Connected100 ms11