list_graphs

A read tool on the Mcpg MCP server.

SERVERMcpg SOURCEpypi:mcpg

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/io-github-devopam-mcpg/list-graphs.md

WHAT IT DOES

What list_graphs does on Mcpg

AI agents call list_graphs 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.

RISK

Why list_graphs is rated Low

The tool name 'list_graphs' suggests it retrieves or enumerates graph objects from the database. With no description provided, the evidence is based on naming convention alone. The action is clearly non-destructive and read-only (no side effects), consistent with other query/analysis tools on this PostgreSQL MCP server. Severity is low because listing data poses minimal risk even if misused by an agent.

From the tool's definition Tool name 'list_graphs' indicates a retrieval operation that queries existing graphs without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_graphs 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 list_graphs, this is the rule to start with:

list_graphs Allowed

list_graphs 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": {
    "list_graphs": {}
  }
}

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

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

FAQ

Questions about list_graphs

What does the list_graphs tool do? +

list_graphs 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.

How do I enforce a policy on list_graphs? +

Register the Mcpg MCP server in PolicyLayer and add a rule for list_graphs: 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.

What risk level is list_graphs? +

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

Can I rate-limit list_graphs? +

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

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

list_graphs 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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