🗄️ [SAFE] List all available databases. Use this to see what data sources are connected to Metabase. Risk: None - read-only operation.
AI agents call list_databases to retrieve information from Metabase MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about available data sources without any capability to modify, delete, or execute operations. It is a straightforward read operation that lists configuration or metadata. The low severity reflects that database enumeration poses minimal direct risk, though it could inform reconnaissance for further attacks.
From the tool's definition Tool description explicitly states '[SAFE] List all available databases' and 'read-only operation'. The tool name 'list_databases' indicates a query/retrieval function with no modification capability.
Attacks that exploit this kind of access
🗄️ [SAFE] List all available databases. Use this to see what data sources are connected to Metabase. Risk: None - read-only operation. It is categorised as a Read tool in the Metabase MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Metabase MCP Server 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 Metabase MCP Server. 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 Metabase MCP Server MCP server (mikela92/metabase-mcp-mab). 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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