execute_sql

Enhanced SQL with OAuth2 DDL support

SERVERSupabase MCP Server - Self-Hosted Edition SOURCEabdqum/supabase-mcp-selfhosted

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/abdqum-supabase-mcp-selfhosted/execute-sql.md

WHAT IT DOES

What execute_sql does on Supabase MCP Server - Self-Hosted Edition

AI agents invoke execute_sql to trigger actions in Supabase MCP Server - Self-Hosted Edition. 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.

RISK

Why execute_sql is rated High

This tool executes SQL queries with DDL support on a Supabase database instance. Although DDL operations like DROP or TRUNCATE could be considered Destructive, the tool's primary function is to execute arbitrary SQL, making it Execute. The 'critical' severity reflects that uncontrolled SQL execution could damage database integrity, expose sensitive data, or cause service outages.

From the tool's definition Tool name 'execute_sql' combined with description 'Enhanced SQL with OAuth2 DDL support' indicates execution of arbitrary SQL statements, including DDL (Data Definition Language) operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs execute_sql safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Supabase MCP Server - Self-Hosted Edition, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For execute_sql, this is the rule to start with:

execute_sql Rate-limited

execute_sql 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": {
    "execute_sql": {
      "limits": [
        {
          "counter": "execute_sql_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Supabase MCP Server - Self-Hosted Edition, apply this rule, and every execute_sql call is checked against it from then on.

FAQ

Questions about execute_sql

What does the execute_sql tool do? +

Enhanced SQL with OAuth2 DDL support. It is categorised as a Execute tool in the Supabase MCP Server - Self-Hosted Edition MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on execute_sql? +

Register the Supabase MCP Server - Self-Hosted Edition MCP server in PolicyLayer and add a rule for execute_sql: 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 Supabase MCP Server - Self-Hosted Edition. Nothing to install.

What risk level is execute_sql? +

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

Can I rate-limit execute_sql? +

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

Set action: deny in the PolicyLayer policy for execute_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 execute_sql? +

execute_sql is provided by the Supabase MCP Server - Self-Hosted Edition MCP server (abdqum/supabase-mcp-selfhosted). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Supabase MCP Server - Self-Hosted Edition, and thousands of servers like it.

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claude_execute on Claude Bridge →execute_test_case on Percepta MCP Server → All high-risk MCP tools → The MCP Attack Database →

Guides

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