Examine PDF internal object structure including catalog entries, page tree, and object statistics. Args: - file_path (string): Absolute path to a local PDF file - response_format (
AI agents call inspect_structure to retrieve information from 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 and queries structural metadata about PDF files without creating, modifying, deleting, or executing any operations. The scope is limited to analyzing existing PDF properties. Severity is low because misuse would only expose information about PDF internals, not compromise external systems or data integrity.
From the tool's definition Tool performs examination and inspection of PDF internal structures (catalog entries, page tree, object statistics) with no modification capability. Verb 'inspect' combined with 'examine' indicates read-only analysis.
Attacks that exploit this kind of access
Examine PDF internal object structure including catalog entries, page tree, and object statistics. Args: - file_path (string): Absolute path to a local PDF file - response_format (. It is categorised as a Read tool in the Pdf Reader MCP Server, which means it retrieves data without modifying state.
Register the Pdf Reader MCP server in PolicyLayer and add a rule for inspect_structure: 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 Pdf Reader. Nothing to install.
inspect_structure 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 inspect_structure 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 inspect_structure. 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.
inspect_structure is provided by the Pdf Reader MCP server (shuji-bonji/pdf-reader-mcp). 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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