ocr_image

OCR image recognition

SERVERNapCat MCP Server SOURCE1021143806/napcat_mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1021143806-napcat-mcp/ocr-image.md

WHAT IT DOES

What ocr_image does on NapCat MCP Server

AI agents call ocr_image to retrieve information from NapCat MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why ocr_image is rated Low

OCR (Optical Character Recognition) is a data retrieval operation that analyzes image content and extracts text. It has no side effects, does not modify any state, and does not execute external commands or code.

From the tool's definition Tool performs 'OCR image recognition' - extracts text from images without modifying, deleting, or executing operations. The description and name indicate a read-only recognition operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ocr_image safely

PolicyLayer is an MCP gateway: it sits between your AI agents and NapCat MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ocr_image, this is the rule to start with:

ocr_image Allowed

ocr_image is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ocr_image": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect NapCat MCP Server, apply this rule, and every ocr_image call is checked against it from then on.

FAQ

Questions about ocr_image

What does the ocr_image tool do? +

OCR image recognition. It is categorised as a Read tool in the NapCat MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on ocr_image? +

Register the NapCat MCP Server MCP server in PolicyLayer and add a rule for ocr_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 NapCat MCP Server. Nothing to install.

What risk level is ocr_image? +

ocr_image is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit ocr_image? +

Yes. Add a rate_limit block to the ocr_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.

How do I block ocr_image completely? +

Set action: deny in the PolicyLayer policy for ocr_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.

What MCP server provides ocr_image? +

ocr_image is provided by the NapCat MCP Server MCP server (1021143806/napcat_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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