List all tables in the database
AI agents call mysql_list_tables to retrieve information from MySQL ReadOnly 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 schema metadata (table names) from a database with no side effects. It is a pure read operation that does not create, modify, delete, or execute any operations. The server is explicitly described as read-only, and listing tables is a fundamental query operation with minimal blast radius if misused.
From the tool's definition Tool is 'mysql_list_databases' and 'mysql_list_tables' on a 'MySQL ReadOnly MCP Server' with 'read-only access' and 'SQL injection protection'. The function lists tables without modifying or deleting data.
Attacks that exploit this kind of access
List all tables in the database. It is categorised as a Read tool in the MySQL ReadOnly MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MySQL ReadOnly MCP Server MCP server in PolicyLayer and add a rule for mysql_list_tables: 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 ReadOnly MCP Server. Nothing to install.
mysql_list_tables 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 mysql_list_tables 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 mysql_list_tables. 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.
mysql_list_tables is provided by the MySQL ReadOnly MCP Server MCP server (zhaojw-php/mysql-readonly-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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