List all available SkySQL database services
AI agents call list_services to retrieve information from Skysql without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward listing operation that retrieves metadata about existing database services. It has no side effects, cannot modify or delete data, and poses minimal risk even if called repeatedly or with unexpected arguments. The blast radius is limited to information disclosure about available services.
From the tool's definition Tool name 'list_services' and description 'List all available SkySQL database services' indicate a query/retrieval operation with no modification, deletion, or execution of code.
Documented attack patterns abuse exactly the kind of access list_services gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Skysql, and nothing reaches the server without passing your rules. This is the rule we recommend for list_services:
{
"version": "1",
"default": "deny",
"tools": {
"list_services": {}
}
}list_services is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all available SkySQL database services. It is categorised as a Read tool in the Skysql MCP Server, which means it retrieves data without modifying state.
Register the Skysql MCP server in PolicyLayer and add a rule for list_services: 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 Skysql. Nothing to install.
list_services is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_services 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 list_services. 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.
list_services is provided by the Skysql MCP server (skysqlinc/skysql-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Skysql, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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8 Skysql tools catalogued and risk-classified — across an index of 43,000+ MCP servers.