List tables without primary keys and recommendations.
AI agents call mysql_tables_without_primary_keys to retrieve information from Mysql 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 query to inspect database schema and return diagnostic information. It retrieves data about table definitions (presence/absence of primary keys) and provides analysis/recommendations, which are informational outputs. No data is created, modified, deleted, or executed.
From the tool's definition Tool name 'mysql_tables_without_primary_keys' and description 'List tables without primary keys and recommendations' indicate a query operation that retrieves metadata about table structure without modifying or executing operations on the database.
Documented attack patterns abuse exactly the kind of access mysql_tables_without_primary_keys gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mysql, and nothing reaches the server without passing your rules. This is the rule we recommend for mysql_tables_without_primary_keys:
{
"version": "1",
"default": "deny",
"tools": {
"mysql_tables_without_primary_keys": {}
}
}mysql_tables_without_primary_keys is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List tables without primary keys and recommendations. It is categorised as a Read tool in the Mysql MCP Server, which means it retrieves data without modifying state.
Register the Mysql MCP server in PolicyLayer and add a rule for mysql_tables_without_primary_keys: 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. Nothing to install.
mysql_tables_without_primary_keys 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_tables_without_primary_keys 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_tables_without_primary_keys. 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_tables_without_primary_keys is provided by the Mysql MCP server (mukul975/mysql-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mysql, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
233 Mysql tools catalogued and risk-classified — across an index of 43,000+ MCP servers.