get_layer_features

THE RISK

Low Risk

Why get_layer_features needs a policy

This tool retrieves or queries data from a vector layer without modifying, deleting, or executing operations. The verb 'retrieve' and the presence of an optional limit parameter are consistent with standard data retrieval patterns. No destructive, executable, or write operations are performed. The impact is limited to reading existing geographic data.

From the tool's definition Tool name 'get_layer_features' and description 'Retrieve features from a vector layer with an optional limit' indicate a read-only query operation with no side effects.

Documented attack patterns abuse exactly the kind of access get_layer_features gives an agent:

POLICY

How to control get_layer_features

PolicyLayer is an MCP gateway — it sits between your AI agents and QGIS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_layer_features:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_layer_features": {}
  }
}

get_layer_features is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register QGIS MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More QGIS MCP Server tools

Destructive remove_layer Remove a layer from the project by its ID. Execute execute_code Execute arbitrary PyQGIS code provided as a string. Execute execute_processing Execute a processing algorithm with the given parameters. Execute zoom_to_layer Zoom to the extent of a specified layer. Write load_project Load a QGIS project from the specified path. Write render_map Render the current map view to an image file with the specified dimensions. Write add_raster_layer Add a raster layer to the project. Write add_vector_layer Add a vector layer to the project.

All 15 QGIS MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_layer_features

What does the get_layer_features tool do? +

Retrieve features from a vector layer with an optional limit. It is categorised as a Read tool in the QGIS MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_layer_features? +

Register the QGIS MCP Server MCP server in PolicyLayer and add a rule for get_layer_features: 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 QGIS MCP Server. Nothing to install.

What risk level is get_layer_features? +

get_layer_features is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_layer_features? +

Yes. Add a rate_limit block to the get_layer_features 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.

How do I block get_layer_features completely? +

Set action: deny in the PolicyLayer policy for get_layer_features. 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.

What MCP server provides get_layer_features? +

get_layer_features is provided by the QGIS MCP Server MCP server (jjsantos01/qgis_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every QGIS MCP Server tool call.

Start from QGIS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →