MCP Tool Reference High Risk

run_sql

Execute individual SQL queries

Part of the Neon MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

WHEN AI AGENTS USE THIS TOOL

AI agents invoke run_sql to trigger processes or run actions in Neon. Execute operations can have side effects beyond the immediate call — triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.

WHY ENFORCE A POLICY ON RUN_SQL

run_sql can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.

RECOMMENDED POLICY

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

neon.yaml
tools:
  run_sql:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Neon policy for all 29 tools.

DETAILS

Tool Name

run_sql

Category

Execute

MCP Server

Neon MCP Server

Risk Level

High

MORE NEON TOOLS

View all 29 tools →

SIMILAR EXECUTE TOOLS ON OTHER SERVERS

RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the run_sql tool do?

Execute individual SQL queries. It is categorised as a Execute tool in the Neon MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_sql?

Add a rule in your Intercept YAML policy under the tools section for run_sql. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Neon MCP server.

What risk level is run_sql?

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

Can I rate-limit run_sql?

Yes. Add a rate_limit block to the run_sql rule in your Intercept 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 run_sql completely?

Set action: deny in the Intercept policy for run_sql. 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 run_sql?

run_sql is provided by the Neon MCP server (neondatabase/mcp-server-neon). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON NEON

Open source. One binary. Zero dependencies.