TerraMCP

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

A Wrench AI service for environmental source discovery and live UK open-data tools.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "TerraMCP": {
      "url": "https://terramcp.earth/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (33)

• search_sources read-only

  Find curated water, environment, terrain and civil engineering source summaries as the recommended starting point for discovery. Understands UK place names and water/civils synonyms; location_hints provide approximate coordinates for live station tools. Unmatched queries return suggestions with a note. Returns paginated summaries (default 20, maximum 50); use get_source for full evidence and enrichment. Query also matches use cases and audience; use_case and audience filters match case-insensitive substrings. Returns separate sponsored and organic arrays plus organic pagination; sponsored placements are pinned and explicitly flagged, and may include coming-soon placeholders. Region includes global sources. TerraMCP is a Wrench AI service. Discovery needs no API key or signup. Open-data router anonymous limits: 60 calls/hour and 300/day per IP and session.

  Parameters:

  • kind — string — Source kind to include.
  • sort — string — Default discovery for browsing; Discover keeps text queries ranked by relevance. Quality and Newest explicitly override relevance.
  • limit — integer — Maximum organic summaries per page; default 20, maximum 50.
  • query — string — Plain-language source or evidence query; empty to browse. Place hints are approximate, not confirmed site coordinates.
  • offset — integer — Number of organic results to skip for pagination.
  • region — string — Region filter; global sources are also included.
  • audience — string — Case-insensitive substring of the intended audience.
  • category — string — Category slug from list_categories.
  • official — string — Include (default), exclude, or show only government / regulator publishers.
  • use_case — string — Case-insensitive substring of the source use cases.
  • live_only — boolean — Only sources queryable through TerraMCP router tools; sponsored placements remain separately labelled.
  • min_score — number — Minimum evidence-quality score from 0 to 100.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_source read-only

  Get full source evidence, access requirements and router_tools as the recommended starting point after search_sources. Use a returned slug, normalised name or alias (optional -api/-mcp/-server suffix). Unknown values are null. Placeholders explicitly show coming-soon status. TerraMCP is a Wrench AI service. Discovery needs no API key or signup. Open-data router anonymous limits: 60 calls/hour and 300/day per IP and session.

  Parameters:

  • slug (required) — string — Source slug returned by search_sources; normalised names and aliases also resolve.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_categories read-only

  List curated consultancy disciplines and source counts to browse categories before searching. TerraMCP is a Wrench AI service. Discovery needs no API key or signup. Open-data router anonymous limits: 60 calls/hour and 300/day per IP and session.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• top_sources read-only

  Return highest evidence-quality organic sources and separate sponsored placements to browse a category. Limit applies only to organic results; sponsored placeholders remain explicitly marked. TerraMCP is a Wrench AI service. Discovery needs no API key or signup. Open-data router anonymous limits: 60 calls/hour and 300/day per IP and session.

  Parameters:

  • limit — integer — Maximum organic sources to return; default 10, maximum 50.
  • category — string — Category slug from list_categories.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_consultant read-only

  Return a sponsored consultancy listing with contact URL and specialisms when seeking professional help. Labelled Sponsored; no automatic contact or lead transfer. TerraMCP is a Wrench AI service. Discovery needs no API key or signup. Open-data router anonymous limits: 60 calls/hour and 300/day per IP and session.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• nrw_stations read-only

  Find Natural Resources Wales telemetry stations by station name (anonymous, OGL v3). Returns station references for nrw_measures; data is provisional. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • name (required) — string — Station name to search for within this provider.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• nrw_measures read-only

  Get NRW telemetry measures and latest observations for a station_id. Preserves reported units and quality codes (OGL v3). Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — Station identifier returned by the corresponding provider's station discovery tool.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• nrw_readings read-only

  Get NRW telemetry readings for a measure_id over at most 7 days. Preserves source timestamps, values and quality codes; timestamps lack an explicit timezone (OGL v3). Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • measure_id (required) — string — NRW measure identifier returned by nrw_measures.
  • start (required) — string — Start ISO 8601 timestamp with timezone offset; start/end must be ordered and at most 7 days apart.
  • end (required) — string — End ISO 8601 timestamp with timezone offset; start/end must be ordered and at most 7 days apart.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• os_names read-only

  Search OS Open Names in Great Britain using your own vaulted OS Data Hub project key (provider os). OGL v3; names are not full postal addresses. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Requires a TerraMCP Bearer key from https://terramcp.earth/account and your own vaulted OS Data Hub project key.

  Parameters:

  • query (required) — string — Place name to search in OS Open Names; not a full postal address.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• ea_groundwater_stations read-only

  Find EA Hydrology groundwater monitoring boreholes near a UK point. Returns station IDs, aquifer, datum and measures for ea_hydro_series(property=groundwaterLevel). OGL v3; absence is not evidence of no groundwater risk. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• ea_flood_features read-only

  Query OGL Environment Agency Main Rivers, Recorded Flood Outlines, Flood Warning Areas or Spatial Flood Defences intersecting a small WGS84 bounding box. Returns bounded attributes without full geometry. Historical/administrative datasets are not live warnings or a site-specific flood risk determination. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • dataset (required) — string — Dataset identifier from the allowed values in this schema.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• ne_designated_sites read-only

  Find Natural England Sites of Special Scientific Interest intersecting a bounded WGS84 box around an England point. OGL v3; returns attributes only, not a planning or ecological determination. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• wq_sampling_points read-only

  Find Environment Agency water-quality sampling points near a WGS84 point (England; OGL v3). Returns bounded metadata, not a water-safety assessment. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• wq_measurements read-only

  Get bounded EA water-quality observations for a sampling_point notation, dates and optional determinand code. Preserves reported units and detection-limit qualifiers (OGL v3). Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • sampling_point (required) — string — Sampling-point notation returned by wq_sampling_points.
  • start (required) — string — Start date in YYYY-MM-DD; must be no later than end, at most 366 days apart.
  • end (required) — string — End date in YYYY-MM-DD; must be no earlier than start, at most 366 days apart.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • determinand — string — Optional numeric EA determinand code to select the measured substance or property.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• sepa_stations read-only

  Find SEPA monitoring stations by name or near WGS84 lat/lon in Scotland (OGL). Supply a name or both coordinates; radius maximum 50 km. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • name — string — Station name to search for within this provider.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• sepa_series read-only

  List bounded SEPA KiWIS time series for a station_id (station number), including series IDs and reported units (OGL). Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — SEPA station_no returned by sepa_stations (not the internal station_id).
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• sepa_values read-only

  Get up to 1,000 SEPA KiWIS observations by series_id over at most 7 days. Values retain upstream units and timestamps; provisional data may change (OGL). Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • series_id (required) — string — Numeric KiWIS series identifier returned by sepa_series.
  • start (required) — string — Start date in YYYY-MM-DD; start/end must be ordered and at most 7 days apart.
  • end (required) — string — End date in YYYY-MM-DD; start/end must be ordered and at most 7 days apart.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• bgs_collections read-only

  List BGS OGC API Features collections with verified OGL commercial reuse terms (borehole index and geology 625k). Other collections are excluded pending licence checks. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • limit — integer — Maximum number of results to return; bounded by this tool's schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• bgs_features read-only

  Query BGS borehole index or geology 625k features intersecting a WGS84 bounding box around a UK point (up to 10 km radius). Returns bounded properties and geometry summaries; bbox matches do not establish conditions at the exact point. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.
  • collection — string — BGS collection identifier from bgs_collections; default onshoreboreholeindex.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• planning_entities read-only

  Find England planning dataset entities intersecting a bounded WGS84 box around a point, including conservation areas, listed buildings, Article 4 directions and flood risk zones. Dataset OGL terms are checked and attribution retained. Coverage may be incomplete; this is not a planning determination. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • dataset — string — Dataset identifier from the allowed values in this schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• flood_zone_at_point read-only

  Check Environment Agency Flood Map for Planning Flood Zones 2/3 at an England point. Tests polygon containment, ignoring defences; not a live flood warning or a site-specific flood risk assessment. No match is not a formal Zone 1 determination. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• tide_stations read-only

  Find EA tidal level stations near a point, using qualifier=Tidal Level. Observed levels, not tide predictions. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• tide_readings read-only

  Get latest observed tidal levels for an EA station to inspect coastal water levels. SI metres; datum qualifier and original unit retained. Not tide predictions. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — Station identifier returned by the corresponding provider's station discovery tool.
  • latest_n — integer — Number of latest readings per measure (default 1, maximum 100).

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• rainfall_stations read-only

  Find nearby EA rainfall gauges and their measures for rainfall-only monitoring. Use confirmed WGS84 lat/lon; parameter is fixed to rainfall. Use flood_find_stations for river level, flow or mixed station discovery. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• rainfall_latest read-only

  Get recent rainfall observations in mm for an EA rainfall gauge to inspect measured rainfall. Use a station_id from rainfall_stations; latest_n defaults to one reading per measure. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — Station identifier returned by the corresponding provider's station discovery tool.
  • latest_n — integer — Number of latest readings per measure (default 1, maximum 100).

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• flood_find_stations read-only

  Find nearby EA river level, flow or rainfall stations and their measures to select a gauge. Use confirmed WGS84 lat/lon and optional parameter; use rainfall_stations for rainfall-only discovery. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • lat (required) — number — Confirmed WGS84 latitude in decimal degrees; pair with lon.
  • lon (required) — number — Confirmed WGS84 longitude in decimal degrees; pair with lat.
  • limit — integer — Maximum number of results to return; bounded by this tool's schema.
  • parameter — string — Optional observed parameter filter: level, flow or rainfall; omit for all measures.
  • radius_km — number — Search radius in kilometres; spatial tools use a bounding box around the point.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• flood_get_readings read-only

  Get recent observations across an EA station's measures to inspect current conditions. Use a station_id from flood_find_stations; latest_n is per measure. Use rainfall_latest for rainfall only. Observations are not forecasts or design levels. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — Station identifier returned by the corresponding provider's station discovery tool.
  • latest_n — integer — Number of latest readings per measure (default 1, maximum 100).

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• flood_list_warnings read-only

  List current EA flood warnings and alerts to check active warnings for an area. Filter by county and max_severity (1 most severe, 4 no longer in force); default 3 includes alerts. Not a site-specific risk assessment. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • county — string — Optional county name to filter EA flood warnings.
  • max_severity — integer — Include warnings through this severity: 1 severe, 2 warning, 3 alert, 4 no longer in force; default 3.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• ea_hydro_series read-only

  Get qualified EA Hydrology flow, level, rainfall or groundwater time series for historical analysis. Use a Hydrology station SUID, property and matching statistic (rainfall typically total, level min/max); choose daily or 15min and ordered YYYY-MM-DD dates at most 366 days apart. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — string — EA Hydrology station SUID from Hydrology metadata; not a flood-monitoring station ID.
  • property (required) — string — EA Hydrology observed property; choose a statistic supported by that station's measures.
  • start (required) — string — Start date in YYYY-MM-DD; must be no later than end, at most 366 days apart.
  • end (required) — string — End date in YYYY-MM-DD; must be no earlier than start, at most 366 days apart.
  • period — string — Observation interval: daily (default) or 15min (sub-daily).
  • statistic — string — Qualified measure statistic; rainfall typically total, levels min/max; default mean.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• nrfa_station_info read-only

  Get NRFA gauging-station metadata, river, location and catchment area to identify a historical flow record. Supply the numeric NRFA station_id; use nrfa_get_timeseries for observations. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — integer — Positive numeric NRFA gauging-station identifier; not an EA station ID.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• nrfa_get_timeseries read-only

  Get NRFA daily flow or catchment rainfall observations for historical catchment analysis. Use a numeric NRFA station_id, data_type gdf (gauged flow), ndf (naturalised flow) or cdr (catchment rainfall), and ordered YYYY-MM-DD dates at most 366 days apart. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • station_id (required) — integer — Positive numeric NRFA gauging-station identifier; not an EA station ID.
  • start (required) — string — Start date in YYYY-MM-DD; must be no later than end, at most 366 days apart.
  • end (required) — string — End date in YYYY-MM-DD; must be no earlier than start, at most 366 days apart.
  • data_type — string — NRFA series: gdf gauged daily flow, ndf naturalised daily flow, cdr catchment daily rainfall.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• usgs_daily read-only

  Get USGS daily mean discharge, stage or water temperature for historical US monitoring analysis. Supply site_id (optional USGS- prefix), parameter_code 00060 (discharge), 00065 (stage) or 00010 (temperature), and ordered YYYY-MM-DD dates at most 366 days apart. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Open data: no API key or signup required. Anonymous limits: 60 calls/hour and 300/day per IP and session; keys offer higher limits, with anonymous fallback after monthly quota. Source licence warnings apply.

  Parameters:

  • site_id (required) — string — USGS monitoring location number (8–15 digits), optionally prefixed USGS-.
  • start (required) — string — Start date in YYYY-MM-DD; must be no later than end, at most 366 days apart.
  • end (required) — string — End date in YYYY-MM-DD; must be no earlier than start, at most 366 days apart.
  • parameter_code — string — USGS parameter: 00060 discharge, 00065 stage, 00010 water temperature; daily mean.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

• dem_clip read-only

  Get a bounded elevation GeoTIFF from OpenTopography for terrain analysis where an appropriate local DEM is unavailable. Supply WGS84 bbox [west,south,east,north] covering at most 100 km² and dataset; UK projects should prefer Defra 1 m LiDAR DTM. BYO OpenTopography key only; commercial use requires an OpenTopography Enterprise key. Returns source data and provenance; supported hydrological units are normalised to SI. TerraMCP is a Wrench AI service. Requires a TerraMCP Bearer key from https://terramcp.earth/account and your own OpenTopography key.

  Parameters:

  • bbox (required) — array — WGS84 bounds [west, south, east, north], ordered and covering at most 100 km².
  • dataset — string — Dataset identifier from the allowed values in this schema.

  Hints: read-only yes · destructive no · idempotent no · open-world yes

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