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{
  "mcpServers": {
    "noaa-tides-and-currents-mcp": {
      "type": "http",
      "url": "https://perigeetides.com/mcp"
    }
  }
}

claude mcp add --transport http noaa-tides-and-currents-mcp https://perigeetides.com/mcp

[mcp_servers.noaa-tides-and-currents-mcp]
url = "https://perigeetides.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "noaa-tides-and-currents-mcp": {
      "type": "remote",
      "url": "https://perigeetides.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "noaa-tides-and-currents-mcp": {
      "type": "http",
      "url": "https://perigeetides.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=noaa-tides-and-currents-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcGVyaWdlZXRpZGVzLmNvbS9tY3AifQ%3D%3D"
}

{
  "servers": {
    "noaa-tides-and-currents-mcp": {
      "type": "http",
      "url": "https://perigeetides.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "noaa-tides-and-currents-mcp": {
      "httpUrl": "https://perigeetides.com/mcp"
    }
  }
}

extensions:
  "noaa-tides-and-currents-mcp":
    enabled: true
    name: "noaa-tides-and-currents-mcp"
    type: streamable_http
    uri: "https://perigeetides.com/mcp"
    timeout: 300

Quality 83 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene93 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations26 of 26 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
warn
tools.token_costabout 13,251 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability75 · weight 15

warn
stability.changes26 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know @ryancardin/[email protected]

26 tools, about 13,251 tokens to load them all · tool set d4b88773148e · tools last changed 2026-09-29 · checked 2026-10-19 17:57 UTC

Tool changes

2026-09-29perigee_whoamichangedoutput schema, annotations
2026-09-29noaa_get_reference_guidechangedoutput schema
2026-09-29nws_get_marine_forecastchangedoutput schema
2026-09-29nws_get_wind_forecastchangedoutput schema
2026-09-29astro_get_next_sun_eventchangedoutput schema
2026-09-29astro_get_sun_positionchangedoutput schema
2026-09-29astro_get_sun_timeschangedoutput schema
2026-09-29astro_get_next_moon_phasechangedoutput schema
2026-09-29astro_get_moon_phasechangedoutput schema
2026-09-29noaa_get_high_tide_floodingchangedoutput schema

Showing the latest 10. Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance90

liveness100

freshness100

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-20d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

@ryancardin/[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://perigeetides.com/mcp` streamable-http	none	yes	100%	438 ms	2025-11-25	2026-10-19

package	registry	version	runtime	secrets
`@ryancardin/noaa-tides-currents-mcp-server`	npm	2.1.0	–

Tools (26)

`astro_get_moon_phase`read-only	Get the moon phase for a date (or each day of a date range if end_date is given): phase name (New Moon, Waxing Crescent, ...), illuminated fraction, age in days within the 29.53-day cycle, distance (km), apparent diameter (degrees), and waxing/waning. Tide context: spring tides (largest range) occur just after new and full moons; neap tides after quarter moons. Computed locally — no NOAA data involved.
`astro_get_next_moon_phase`read-only	Find the date(s) of the next occurrence(s) of a principal moon phase (New Moon, First Quarter, Full Moon, Last Quarter) from a starting date. Use for: "when is the next full moon?", planning around spring tides (which follow new/full moons by 1–2 days).
`astro_get_next_sun_event`read-only	Find the next occurrence(s) of a sun event (sunrise, sunset, dawn, dusk, solarNoon, night, nightEnd, goldenHourStart, goldenHourEnd, nauticalDawn, nauticalDusk, astronomicalDawn, astronomicalDusk) at a location from a starting date. Use for: "when is sunset today?", planning golden-hour photography or dawn fishing around tide windows.
`astro_get_sun_position`read-only	Get the sun's position for a date, time, and location: azimuth (degrees clockwise from north as rendered here), altitude above the horizon (degrees), plus approximate declination and right ascension. Use for: shadow/lighting analysis, solar exposure. Computed locally with suncalc; declination/RA are approximate.
`astro_get_sun_times`read-only	Get sunrise, sunset, solar noon, dawn/dusk (civil), nautical dawn/dusk, astronomical dawn/dusk, golden hour, and day length for a location and date (or each day of a range if end_date is given). Times are ISO UTC unless an IANA timezone is provided. At high latitudes some events may be null (e.g. no astronomical night in summer). Computed locally.
`noaa_find_nearest_stations`read-only	Find the NOAA stations closest to a latitude/longitude point, sorted by distance. Use this to answer "what's the tide station near <place>?" — geocode the place to coordinates first, then call this. Filter by type to match the data you need (e.g. type "tidepredictions" before calling noaa_get_tide_predictions, "currents" before noaa_get_currents — current stations have different IDs than water-level stations). Distance is computed great-circle (Haversine) and reported in both km and miles. (NOAA's API has no native coordinate search; this tool maintains a cached station directory.)
`noaa_get_current_predictions`read-only	Get predicted tidal currents for a NOAA current prediction station. interval="max_slack" (recommended for navigation) returns the tidal-current events — maximum flood, maximum ebb, and slack water times — up to 1 year per request. Other intervals (h, 1, 6, 10, 30, 60 minutes) return a velocity time series — up to 31 days. UNITS WARNING: english = knots; metric = cm/s. vel_type="speed_dir" returns Speed/Direction pairs; "default" returns velocities projected on the flood/ebb axis (Velocity_Major: positive = flood direction, negative = ebb) with meanFloodDir/meanEbbDir. Subordinate (type "S") prediction stations derive from a reference station — see noaa_get_prediction_offsets.
`noaa_get_currents`read-only	Get observed current speed and direction from a NOAA current meter station. Current stations use alphanumeric IDs (e.g. "cb0102" Chesapeake, "bh0101" Boston Harbor) — NOT the 7-digit water-level station IDs. Find them with noaa_search_stations (type "currents") or noaa_find_nearest_stations. UNITS WARNING: english = knots, but metric = cm/s (centimeters/second, not m/s). Returns per record: t (time), s (speed), d (direction, degrees true), b (bin number). Max 7 days per request. Set expand_detailed=true to include per-beam echo intensity and correlation diagnostics.
`noaa_get_extreme_water_levels`read-only	Get NOAA's extreme water level exceedance statistics for a station: the annual exceedance probability levels (e.g. the 1%-annual-chance "100-year" level) and historical extreme events, computed from the station's verified record. Use for flood risk questions ("what water level has a 1% chance per year at X?"). Levels are relative to the station's datums for the 1983–2001 epoch. Only long-record stations have this product.
`noaa_get_harmonic_constituents`read-only	Get the harmonic constituents NOAA uses to compute tide or current predictions at a station — the amplitude, phase, and angular speed of each tidal constituent (M2, S2, N2, K1, O1, ...). For water-level stations: amplitude (feet/meters), phase_GMT and phase_local (degrees), speed (degrees/hour). For current stations (alphanumeric IDs) constituents are current ellipses (major/minor amplitudes and phases per depth bin — pass bin to filter). Use for: building custom tide computations, checking a station's dominant constituents (M2 amplitude indicates semidiurnal range), verifying whether a station is harmonically predicted at all. Only reference (R) stations have constituents — subordinate stations use offsets (noaa_get_prediction_offsets).
`noaa_get_high_tide_flooding`read-only	Get NOAA high tide flooding (HTF, "nuisance"/"sunny day" flooding) statistics for a station. Reports: - daily: flood occurrence per day (REQUIRES start_date and end_date, YYYYMMDD) - monthly / seasonal / annual: counts of minor/moderate/major flood days per period (filter with year/month/season_months, or range = last N periods) - met_year_annual: counts by meteorological year (May–April) - annual_outlook: NOAA's projected flood-day outlook for the coming met year - projections: decadal flood-day projections through 2100 (filter by decade, flood_threshold) - record_days: record flood-day counts - likely_scenarios: likely decadal flooding scenarios - daily_likelihoods: day-by-day flood likelihood forecasts Use for: "how often does X flood?", trends in nuisance flooding, future flooding projections. Not all stations have HTF products — check the HTFhistorical flag via noaa_get_station_info.
`noaa_get_meteorological_data`read-only	Get observed meteorological/oceanographic sensor data from a NOAA station. Products: air_temperature, water_temperature, wind (speed/gust/direction), air_pressure, air_gap (bridge clearance to water surface), conductivity, visibility, humidity, salinity. Units by system: temps °F/°C; wind knots (english) or m/s (metric); air_gap feet/meters; visibility nautical miles/kilometers; air_pressure always millibars; salinity always PSU. Max span ~31 days per request; interval "6" (6-minute, default) or "h" (hourly). Not every station has every sensor — check with noaa_get_station_info (expand ["sensors"]). Water-level data is served by noaa_get_water_levels, not this tool.
`noaa_get_prediction_offsets`read-only	Get the offsets a subordinate (type "S") prediction station applies to its reference station's predictions. kind "tide": returns refStationId, time offsets for high/low tide (minutes), height offsets for high/low tide, and whether the height adjustment is a ratio (multiplied) or fixed value — this is how NOAA derives subordinate-station tide times from the reference harmonic station. kind "current": returns refStationId/bin, mean flood/ebb directions, and time adjustments (minutes) for max flood, slack-before-ebb, max ebb, slack-before-flood plus amplitude ratios. Note: current prediction offsets are indexed per bin — pass the station_bin_suffix ID form (e.g. "ACT0091_1") if the plain ID returns nothing. Reference (R) stations return empty/null offsets — they don't need any.
`noaa_get_reference_guide`read-only	Get curated reference documentation for NOAA CO-OPS concepts and parameters. Topics: - products: Every NOAA CO-OPS data product and which tool serves it - datums: Vertical datums (MLLW, MSL, IGLD...) and station applicability - units: What english vs metric means per measurement (incl. cm/s currents) - time_zones: gmt / lst / lst_ldt semantics and restrictions - intervals: Valid interval values per product family - station_types: Station type filters and station ID formats - data_limits: Maximum date-range span per product - quality_flags: Data quality fields (v/s/f/q), flag letters, HH/H/L/LL - date_formats: Accepted date formats and parameter combinations - marine_forecast: NWS wind & marine forecast tools vs CO-OPS observations Consult this before constructing unusual requests — especially "datums" (which vertical reference to use and station applicability), "units" (english/metric asymmetries like cm/s current speeds), and "data_limits" (maximum date spans per product).
`noaa_get_sea_level_rise_projections`read-only	Get NOAA's Interagency Sea Level Rise Scenario projections for a station (from the 2022 technical report): projected relative sea level (meters or feet, see units field) per decade through 2150 under the chosen scenario. Scenarios: low, intermediate-low, intermediate, intermediate-high, high, extreme, or all. Use for coastal planning questions ("how much sea level rise is projected at X by 2050?"). Pair with noaa_get_sea_level_trends (observed) and noaa_get_high_tide_flooding (flooding impact).
`noaa_get_sea_level_trends`read-only	Get the long-term relative sea level trend at a NOAA station: trend and error (reported by NOAA in mm/yr or inches/decade — the payload's trendUnits field says which), the observation period (startDate/endDate), and seasonal amplitude. Relative sea level combines ocean rise AND local land movement (subsidence/uplift), so trends vary widely by station (e.g. strongly positive on the Gulf Coast, negative in Alaska). Requires a station with a long water-level record; omit station to list all (affil "US" or "Global" filters the network).
`noaa_get_station_datums`read-only	Get the accepted tidal datum values for a station: the elevations of MHHW, MHW, MTL, MSL, DTL, MLW, MLLW, STND, NAVD88 (where computed), plus GT (great diurnal range), MN (mean range), LAT/HAT (lowest/highest astronomical tide), and the station's historical extreme min/max water levels with dates. epoch "current" returns the present National Tidal Datum Epoch (1983–2001) values; "superseded" returns the prior epoch's values (useful for historical comparisons — not all stations have one). All values share one reference zero (the station datum), so datum-to-datum conversion is subtraction: height_above_MLLW = height_above_MSL + (MSL − MLLW). Use this tool to (1) check which datums a station supports before requesting data, and (2) convert heights between datums.
`noaa_get_station_info`read-only	Get a NOAA station's full metadata record: location, state, time zone, tide type, Great Lakes flag, capability flags, and links to available sub-resources. Optionally expand sub-resources inline via the "expand" list: - details (established/removed dates), sensors (installed instruments + elevations), floodlevels (NOS/NWS minor/moderate/major flood thresholds), benchmarks, products (available data page links), notices, disclaimers — for water-level stations - bins (ADCP depth bins), deployments — for current stations (alphanumeric IDs) Use this before requesting data to confirm what the station actually collects. For datum values use noaa_get_station_datums; for harmonic constituents use noaa_get_harmonic_constituents.
`noaa_get_tide_predictions`read-only	Get NOAA harmonic tide predictions (future or past) for a station. interval="hilo" (recommended for "when is high/low tide") returns the daily tide events with type H/L — up to 10 years per request. Other intervals (h, 1, 5, 6, 10, 15, 30, 60 minutes) return a height time series — up to 1 year per request. Heights are relative to the requested datum (MLLW default). Notes: - Great Lakes stations have NO tide predictions (lake levels are not tidal). - Subordinate stations (type "S") only support interval=hilo; use the station's reference (R) station for interval series. - Predictions are astronomical only — they exclude weather effects (storm surge, wind setup). Compare with noaa_get_water_levels for actual conditions.
`noaa_get_top_ten_water_levels`read-only	Get a station's highest recorded water levels: analysis "toptenwaterlevels" returns the ten highest events on record (with date, height, causal event name like "Great New England Hurricane", and category); "peakwaterlevels" returns peak event records (optionally filtered by year). Heights are relative to the requested datum (MHHW is typical for flood comparisons). Use for "what's the worst flooding ever recorded at X?".
`noaa_get_water_levels`read-only	Get observed water levels from a NOAA tide station as a time series. Choose the interval: "6" = standard 6-minute observations (preliminary or verified, max 31 days per request), "1" = 1-minute preliminary data (max 4 days), "hourly" = verified hourly heights (max 1 year). Heights are relative to the requested datum (MLLW by default — the US nautical chart zero). Returns per record: t (timestamp in requested time zone), v (height), s (sigma), f (quality flags, decoded in output), q (p=preliminary, v=verified). Recent data is preliminary; verification takes days to weeks. Use for: "what is the water level right now" (date=latest), storm surge analysis, comparing observed vs predicted tide. Do NOT use for future tides — use noaa_get_tide_predictions.
`noaa_get_water_level_summaries`read-only	Get verified summary water-level products from a NOAA station: - high_low: each day's observed highs/lows with ty = HH (higher high), H, L, LL (lower low). Max 1 year per request. - daily_mean: daily mean levels — GREAT LAKES STATIONS ONLY; NOAA requires local standard time, which this tool applies automatically. Max 10 years. - daily_max_min: daily maxima/minima from hourly and 6-minute data with completeness percentages. Max 10 years. - monthly_mean: monthly tidal datum means (columns MHHW, MHW, MSL, MTL, MLW, MLLW, DTL, GT, MN, DHQ, DLQ, HWI, LWI, highest, lowest). Max 200 years — ideal for long-term climatology. Use for: historical extremes, mixed-tide analysis (HH vs H), long-term averages. For raw time series use noaa_get_water_levels; for future tides use noaa_get_tide_predictions.
`noaa_search_stations`read-only	Search the NOAA CO-OPS station directory by capability type, name, and/or state. Filter with: - type: what the station does (waterlevels, tidepredictions, currents, currentpredictions, met, ...) — pick the type matching the data you plan to request. - name: case-insensitive substring ("San Francisco", "Boston"). - state: two-letter code ("CA", "MA"). Returns id, name, location, tide type, Great Lakes flag, and for prediction stations whether they are reference (R, harmonic) or subordinate (S, offset-based — hilo predictions only). Results are paginated (limit/offset). For proximity search by coordinates use noaa_find_nearest_stations instead.
`nws_get_marine_forecast`read-only	Get the official NWS Coastal Waters Forecast (CWF) narrative for the marine zone covering a latitude/longitude — day-part wind/seas text ("SE winds 10 to 15 kt... Bay waters choppy"), including Small Craft Advisories. The point must lie in (or very near) US coastal waters; CWF zones extend roughly 20-60 NM offshore. Returns the zone's segment from the latest bulletin plus the office-wide synopsis. For numeric hourly wind values use nws_get_wind_forecast; for observed wind at a NOAA station use noaa_get_meteorological_data (product "wind").
`nws_get_wind_forecast`read-only	Get the NWS hourly wind FORECAST (speed, gust, direction — plus wave height where the grid carries it) for a latitude/longitude. Data comes from the NWS forecast grid (api.weather.gov gridpoints — numeric NDFD values, not display strings). Horizon is up to ~7 days (156 hours), starting at the current hour. US and territories only. Wave height appears for marine/nearshore gridpoints; swell/period fields are typically only populated for open-ocean points. Units: english = knots and feet (default), metric = m/s and meters. Direction is degrees true, the direction the wind blows FROM. This is FORECAST data. For observed (measured) wind at a NOAA station right now, use noaa_get_meteorological_data (product "wind"). For the official marine text forecast (Coastal Waters Forecast narrative with small-craft advisories), use nws_get_marine_forecast.
`perigee_whoami`read-only	Show how this MCP connection is authenticated: the Perigee account it is linked to (if any), how it signed in (OAuth connector or API key), its rate-limit tier, and the requests-per-minute limit. Use when the user asks which account they're connected as, why they're rate limited, or whether their sign-in worked.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.RyanCardin15/noaa-tides-and-currents-mcp",
  "title": "NOAA Tides and Currents",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://perigeetides.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "2.1.0",
  "packages": [
    {
      "version": "2.1.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@ryancardin/noaa-tides-currents-mcp-server",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org"
    }
  ],
  "repository": {
    "url": "https://github.com/RyanCardin15/Perigee-Tides",
    "source": "github"
  },
  "websiteUrl": "https://perigeetides.com/developers",
  "description": "NOAA tides and currents: water levels, tide predictions, currents, met data, flooding, sun and moon"
}