List all databases on the server
AI agents call list-databases to retrieve information from Mysql Multi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation to retrieve and display available databases. It has no side effects, does not modify data, and presents no destructive or financial risks. The blast radius of misuse is minimal—an attacker gains only informational knowledge of database names, not access to data contents. This is a standard Read category tool.
From the tool's definition Tool name 'list-databases' and description 'List all databases on the server' indicate a retrieval operation that queries database metadata without modification.
Attacks that exploit this kind of access
List all databases on the server. It is categorised as a Read tool in the Mysql Multi MCP Server, which means it retrieves data without modifying state.
Register the Mysql Multi 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 Mysql Multi. 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 Mysql Multi MCP server (pchimbolo/mysql-multi-mcp). 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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