Scan a directory for images and return metadata
AI agents call scan_directory to retrieve information from image-reader MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a filesystem directory to list and extract metadata about images. It has no side effects—it neither modifies, deletes, executes code, nor moves money. The action is purely informational retrieval, fitting the Read category.
From the tool's definition Tool 'scan_directory' with description 'Scan a directory for images and return metadata' performs directory traversal and retrieval of image metadata without modification, deletion, or execution.
Attacks that exploit this kind of access
Scan a directory for images and return metadata. It is categorised as a Read tool in the image-reader MCP Server MCP Server, which means it retrieves data without modifying state.
Register the image-reader MCP Server MCP server in PolicyLayer and add a rule for scan_directory: 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 image-reader MCP Server. Nothing to install.
scan_directory 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 scan_directory 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 scan_directory. 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.
scan_directory is provided by the image-reader MCP Server MCP server (rupeedev/mcp-image-reader). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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