ea-hydrology.stations.search
Search the UK Environment Agency hydrology monitoring network for river, groundwater, and rainfall stations, filterable by river name, freetext label search, or what the station measures (waterFlow, waterLevel, rainfall, temperature, groundwaterLevel). Returns station_id, name, river/catchment, c...
This record as markdown: /tools/io-github-whiteknightonhorse-apibase/ea-hydrology.stations.search.md
What ea-hydrology.stations.search does on Apibase
AI agents call ea-hydrology.stations.search to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
limit | integer | — | Max stations to return (default 20, max 200). |
search | string | — | Freetext search matching the station label/name (e.g. "Farmoor"). |
river_name | string | — | Filter stations by river name, partial match (e.g. "River Thames"). |
observed_property | string | — | Filter stations by what they measure: waterFlow (river flow m3/s), waterLevel (river level), rainfall, temperature, or groundwaterLevel (borehole). |
Parameters from the server's own tool schema.
Why ea-hydrology.stations.search is rated Low
Retrieves public hydrology station metadata and coordinates with no side effects or data modification.
From the tool's definition Search the UK Environment Agency hydrology monitoring network for river, groundwater, and rainfall stations
Attacks that exploit this kind of access
The rule that runs ea-hydrology.stations.search safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ea-hydrology.stations.search, this is the rule to start with:
ea-hydrology.stations.search is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Apibase, apply this rule, and every ea-hydrology.stations.search call is checked against it from then on.
Questions about ea-hydrology.stations.search
Search the UK Environment Agency hydrology monitoring network for river, groundwater, and rainfall stations, filterable by river name, freetext label search, or what the station measures (waterFlow, waterLevel, rainfall, temperature, groundwaterLevel). Returns station_id, name, river/catchment, coordinates, and measure count — use the station_id with ea-hydrology.station_measures to see its available data series. Data: environment.data.gov.uk/hydrology, UK Open Government Licence v3.0, no auth required. It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.
ea-hydrology.stations.search accepts 4 parameters: limit, search, river_name, observed_property. The full parameter table on this page comes from the server's own tool schema.
Register the Apibase MCP server in PolicyLayer and add a rule for ea-hydrology.stations.search: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apibase. Nothing to install.
ea-hydrology.stations.search is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ea-hydrology.stations.search rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for ea-hydrology.stations.search. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
ea-hydrology.stations.search is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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