list_hypertables

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-hypertables.md

WHAT IT DOES

What list_hypertables does on Mcpg

AI agents call list_hypertables 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_hypertables is rated Low

The 'list_' prefix strongly indicates this is a read-only operation that retrieves or enumerates hypertables. No description is provided, lowering confidence slightly, but the naming convention and context of a PostgreSQL MCP server make it clear this queries metadata. No data modification, deletion, code execution, or financial operations are implied. This is a standard informational query tool.

From the tool's definition Tool name is 'list_hypertables', which follows the 'list_*' pattern indicating a retrieval operation that queries and returns data about hypertables in PostgreSQL/TimescaleDB without modifying anything.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_hypertables Allowed

list_hypertables 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_hypertables": {}
  }
}

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_hypertables call is checked against it from then on.

FAQ

Questions about list_hypertables

What does the list_hypertables tool do? +

list_hypertables 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_hypertables? +

Register the Mcpg MCP server in PolicyLayer and add a rule for list_hypertables: 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_hypertables? +

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

Can I rate-limit list_hypertables? +

Yes. Add a rate_limit block to the list_hypertables 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_hypertables completely? +

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

list_hypertables 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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