Generate a Mermaid ER diagram of the database schema
AI agents call generate_er_diagram to retrieve information from SingleStore MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads the database schema and produces a visual representation (ER diagram) in Mermaid format. It only retrieves and displays structural metadata about the database; it does not modify, execute, or delete anything.
From the tool's definition Generate a Mermaid ER diagram of the database schema
Attacks that exploit this kind of access
Generate a Mermaid ER diagram of the database schema. It is categorised as a Read tool in the SingleStore MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SingleStore MCP Server MCP server in PolicyLayer and add a rule for generate_er_diagram: 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 SingleStore MCP Server. Nothing to install.
generate_er_diagram 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 generate_er_diagram 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 generate_er_diagram. 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.
generate_er_diagram is provided by the SingleStore MCP Server MCP server (madhukarkumar/singlestore-mcp-server). 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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