list_databases
AI agents call list_databases to retrieve information from Mcp Ohmy Sql without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates available databases—a query operation with no side effects. However, severity is elevated to medium rather than low because: (1) database enumeration can reveal sensitive schema information to an AI agent that might be exploited, (2) the tool operates in a context where SQL execution is possible, and (3) listing databases is reconnaissance that could inform follow-up attacks.
From the tool's definition Tool name 'list_databases' with context that this is a SQL database bridge server indicates data retrieval without modification.
Attacks that exploit this kind of access
list_databases. It is categorised as a Read tool in the Mcp Ohmy Sql MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ohmy Sql MCP server in PolicyLayer and add a rule for list_databases: 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 Mcp Ohmy Sql. Nothing to install.
list_databases 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_databases 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_databases. 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_databases is provided by the Mcp Ohmy Sql MCP server (machu-gwu/mcp_ohmy_sql-project). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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