hent_hoyde
Hent terrenghøyde (meter over havet) for et koordinat fra Kartverkets høydedata-API. Bruker DTM 1m der det finnes.
This record as markdown: /tools/3121n-nor-data-kartverket-mcp/hent-hoyde.md
What hent_hoyde does on Kartverket
AI agents call hent_hoyde to retrieve information from Kartverket without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why hent_hoyde is rated Low
This tool retrieves elevation data for a given geographic coordinate. It is a pure read operation that queries Norwegian geographic data without side effects, state changes, or ability to modify underlying data. The blast radius of misuse is minimal—an agent could retrieve elevation data for any coordinate, but cannot alter, delete, or execute operations.
From the tool's definition Tool name 'hent_hoyde' (fetch elevation) and description 'Hent terrenghøyde (meter over havet) for et koordinat' (fetch terrain elevation in meters above sea level for a coordinate) indicate data retrieval only.
Attacks that exploit this kind of access
The rule that runs hent_hoyde safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Kartverket, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hent_hoyde, this is the rule to start with:
hent_hoyde 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 Kartverket, apply this rule, and every hent_hoyde call is checked against it from then on.
Questions about hent_hoyde
Hent terrenghøyde (meter over havet) for et koordinat fra Kartverkets høydedata-API. Bruker DTM 1m der det finnes. It is categorised as a Read tool in the Kartverket MCP Server, which means it retrieves data without modifying state.
Register the Kartverket MCP server in PolicyLayer and add a rule for hent_hoyde: 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 Kartverket. Nothing to install.
hent_hoyde 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 hent_hoyde 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 hent_hoyde. 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.
hent_hoyde is provided by the Kartverket MCP server (@nor-data/kartverket-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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