Execute a read-only SELECT query against the database. Automatically limited to prevent large result sets. Only SELECT queries are allowed.
Part of the SQL Server MCP (Windows) server.
Free to start. No card required.
AI agents invoke execute_query to trigger processes or run actions in SQL Server MCP (Windows). 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.
execute_query can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"execute_query": {
"limits": [
{
"counter": "execute_query_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full SQL Server MCP (Windows) policy for all 12 tools.
These attack patterns abuse exactly the kind of access execute_query gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Execute a read-only SELECT query against the database. Automatically limited to prevent large result sets. Only SELECT queries are allowed.. It is categorised as a Execute tool in the SQL Server MCP (Windows) MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the SQL Server MCP (Windows) MCP server in PolicyLayer and add a rule for execute_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 SQL Server MCP (Windows). Nothing to install.
execute_query is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the execute_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.
Set action: deny in the PolicyLayer policy for execute_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.
execute_query is provided by the SQL Server MCP (Windows) MCP server (@tharanabopearachchi/sql-server-mcp-macos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 12 SQL Server MCP (Windows) tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.