import_from_csv · PySqlit MCP: Risk & Policy

WHAT IT DOES

What import_from_csv does on PySqlitMCP

AI agents use import_from_csv to create or update resources in PySqlitMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PySqlitMCP environment.

WHY IT NEEDS A POLICY

Why import_from_csv needs a policy

The tool creates new records in a SQLite database table by importing data from a CSV file. This is a Write operation because it modifies database state reversibly through INSERT operations.

From the tool's definition Tool description states '从CSV文件导入数据到表' (import data from CSV file to table), and the tool name 'import_from_csv' indicates data import operation. This is a reversible data creation/modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

import_from_csv Rate-limited

import_from_csv stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "import_from_csv": {
      "limits": [
        {
          "counter": "import_from_csv_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches PySqlitMCP, so you can run agents against it safely.

FAQ

Questions about import_from_csv

What does the import_from_csv tool do? +

从CSV文件导入数据到表. It is categorised as a Write tool in the PySqlitMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on import_from_csv? +

Register the PySqlit MCP server in PolicyLayer and add a rule for import_from_csv: 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 PySqlitMCP. Nothing to install.

What risk level is import_from_csv? +

import_from_csv is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit import_from_csv? +

Yes. Add a rate_limit block to the import_from_csv 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 import_from_csv completely? +

Set action: deny in the PolicyLayer policy for import_from_csv. 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 import_from_csv? +

import_from_csv is provided by the PySqlit MCP server (python51888/pysqlitmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.