AI agents call detect_markers to retrieve information from Metashape MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Without a description, confidence is limited. However, 'detect_markers' most likely performs image analysis to identify markers—a read operation with no side effects. If it were to create or modify markers, the name would more likely be 'create_markers' or 'add_markers' (which exists separately as 'add_marker').
From the tool's definition Tool name is 'detect_markers' with empty description. The name suggests detection/analysis rather than modification. In photogrammetry workflows, marker detection typically scans images to identify reference points, which is a read-only operation.
Documented attack patterns abuse exactly the kind of access detect_markers gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Metashape MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for detect_markers:
{
"version": "1",
"default": "deny",
"tools": {
"detect_markers": {}
}
}detect_markers is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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detect_markers. It is categorised as a Read tool in the Metashape MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Metashape MCP Server MCP server in PolicyLayer and add a rule for detect_markers: 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 Metashape MCP Server. Nothing to install.
detect_markers 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 detect_markers 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 detect_markers. 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.
detect_markers is provided by the Metashape MCP Server MCP server (jenkinsm13/metashape-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Metashape MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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112 Metashape MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.