Extract text from an image using OCR. Accepts a URL or local file path.
AI agents call ocr to retrieve information from Perceptron Vision MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
OCR is a text extraction operation with no side effects. It queries image data and returns recognized text without altering the image, system state, or external resources. This is a classic Read operation. Severity is low because the worst outcome of misuse is information disclosure from images the agent is already processing.
From the tool's definition Tool extracts text from images using OCR; accepts URL or local file path. No modification, deletion, or execution occurs. This is a read-only operation that retrieves text content from visual sources.
Attacks that exploit this kind of access
Extract text from an image using OCR. Accepts a URL or local file path. It is categorised as a Read tool in the Perceptron Vision MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Perceptron Vision MCP Server MCP server in PolicyLayer and add a rule for ocr: 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 Perceptron Vision MCP Server. Nothing to install.
ocr 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 ocr 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 ocr. 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.
ocr is provided by the Perceptron Vision MCP Server MCP server (perceptron-ai-inc/mcp-server). 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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