Extract a specific image from a PDF by its index (use list_pdf_images to get available indices)
AI agents call extract_pdf_image to retrieve information from MCP PDF Reader without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves embedded images from a PDF document without modifying, deleting, or executing anything. It is a straightforward data retrieval operation with no side effects. The severity is low because image extraction from PDFs poses minimal security risk in isolation—it simply reads existing content from a file.
From the tool's definition Tool description states 'Extract a specific image from a PDF by its index'. The server is described as enabling 'extraction of text, metadata, and embedded images from PDF files'.
Attacks that exploit this kind of access
Extract a specific image from a PDF by its index (use list_pdf_images to get available indices). It is categorised as a Read tool in the MCP PDF Reader MCP Server, which means it retrieves data without modifying state.
Register the MCP PDF Reader MCP server in PolicyLayer and add a rule for extract_pdf_image: 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 MCP PDF Reader. Nothing to install.
extract_pdf_image 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 extract_pdf_image 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 extract_pdf_image. 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.
extract_pdf_image is provided by the MCP PDF Reader MCP server (rturv/mcp-pdf-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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