timescale_query · TigerData-mcp-server MCP: Risk & Policy

WHAT IT DOES

What timescale_query does on TigerData-mcp-server

AI agents invoke timescale_query to trigger actions in TigerData-mcp-server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why timescale_query needs a policy

This tool executes arbitrary SQL queries against a cloud PostgreSQL/TimescaleDB database. While the server description mentions 'run queries and pull information,' the tool itself allows any SQL, which could include SELECT (Read), INSERT/UPDATE (Write), DELETE/DROP (Destructive), or stored procedure calls (Execute).

From the tool's definition 'Execute SQL queries on TimescaleDB Cloud' — arbitrary SQL execution including potentially destructive DDL/DML statements

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

timescale_query Rate-limited

timescale_query stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "timescale_query": {
      "limits": [
        {
          "counter": "timescale_query_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about timescale_query

What does the timescale_query tool do? +

Execute SQL queries on TimescaleDB Cloud. It is categorised as a Execute tool in the TigerData-mcp-server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on timescale_query? +

Register the TigerData-mcp-server MCP server in PolicyLayer and add a rule for timescale_query: 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 TigerData-mcp-server. Nothing to install.

What risk level is timescale_query? +

timescale_query is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit timescale_query? +

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

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

timescale_query is provided by the TigerData-mcp-server MCP server (thesurfingcoder/tigerdata-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.