Get homogeneous climate measurement series from Switzerland's National Basic Climatic Network (NBCN). Returns temperature, precipitation, sunshine, radiation, wind, pressure, and climate indicators (frost days, summer days, heat days) going back decades. 29 climate stations + 46 precipitation sta...
Part of the MeteoSwiss MCP Server server.
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AI agents call meteoswissClimateData to retrieve information from MeteoSwiss MCP Server without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though meteoswissClimateData only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"meteoswissClimateData": {}
}
}See the full MeteoSwiss MCP Server policy for all 7 tools.
These attack patterns abuse exactly the kind of access meteoswissClimateData gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get homogeneous climate measurement series from Switzerland's National Basic Climatic Network (NBCN). Returns temperature, precipitation, sunshine, radiation, wind, pressure, and climate indicators (frost days, summer days, heat days) going back decades. 29 climate stations + 46 precipitation stations with daily, monthly, and yearly resolution. Use cases: "What are typical January temperatures in Zurich?", "How has precipitation changed in Basel over 50 years?", "How many heat days did Lugano have last year?" Accepts station names ("Zurich", "Basel"), abbreviations ("SMA", "BAS"), or WGS84 coordinates.. It is categorised as a Read tool in the MeteoSwiss MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MeteoSwiss MCP Server MCP server in PolicyLayer and add a rule for meteoswissClimateData: 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 MeteoSwiss MCP Server. Nothing to install.
meteoswissClimateData 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 meteoswissClimateData 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 meteoswissClimateData. 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.
meteoswissClimateData is provided by the MeteoSwiss MCP Server MCP server (https://meteoswiss-mcp.ars.is/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 MeteoSwiss MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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