This record as markdown: /tools/io-github-devopam-mcpg/find-sensitive-columns.md
What find_sensitive_columns does on Mcpg
AI agents call find_sensitive_columns to retrieve information from Mcpg without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why find_sensitive_columns is rated Low
This tool appears to perform schema introspection to identify columns marked as sensitive, which is a read-only operation with no side effects. It retrieves information rather than modifying, executing code, or destroying data. The empty description lowers confidence slightly, but the name strongly suggests a metadata query operation.
From the tool's definition Tool name 'find_sensitive_columns' indicates a discovery/query operation that retrieves metadata about database columns. The verb 'find' suggests searching or listing, not modifying or deleting data.
Attacks that exploit this kind of access
The rule that runs find_sensitive_columns safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcpg, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For find_sensitive_columns, this is the rule to start with:
find_sensitive_columns is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcpg, apply this rule, and every find_sensitive_columns call is checked against it from then on.
Questions about find_sensitive_columns
find_sensitive_columns is a read tool on the Mcpg MCP server. It is categorised as a Read tool in the Mcpg MCP Server, which means it retrieves data without modifying state.
Register the Mcpg MCP server in PolicyLayer and add a rule for find_sensitive_columns: 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 Mcpg. Nothing to install.
find_sensitive_columns 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 find_sensitive_columns 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 find_sensitive_columns. 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.
find_sensitive_columns is provided by the Mcpg MCP server (pypi:mcpg). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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