Fetch the actual simplified GeoJSON FeatureCollection geometry for a country/ADM level from geoBoundaries. WARNING: geometry payloads are large (a simplified national ADM1 set can be several MB); this only returns the simplified geometry and refuses payloads over ~4 MB — for those use get_boundar...
Part of the Geoboundaries server.
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AI agents call get_geometry to retrieve information from Geoboundaries 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 get_geometry 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": {
"get_geometry": {}
}
}See the full Geoboundaries policy for all 22 tools.
These attack patterns abuse exactly the kind of access get_geometry 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.
Fetch the actual simplified GeoJSON FeatureCollection geometry for a country/ADM level from geoBoundaries. WARNING: geometry payloads are large (a simplified national ADM1 set can be several MB); this only returns the simplified geometry and refuses payloads over ~4 MB — for those use get_boundaries and download the URL directly. Prefer get_boundaries unless you explicitly need the coordinates. Not valid for adm="ALL".. It is categorised as a Read tool in the Geoboundaries MCP Server, which means it retrieves data without modifying state.
Register the Geoboundaries MCP server in PolicyLayer and add a rule for get_geometry: 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 Geoboundaries. Nothing to install.
get_geometry 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 get_geometry 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 get_geometry. 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.
get_geometry is provided by the Geoboundaries MCP server (https://gateway.pipeworx.io/geoboundaries/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 Geoboundaries tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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