mysql_read_query
Execute a read-only SQL query (SELECT). Uses prepared statements for safety.
This record as markdown: /tools/io-github-neverinfamous-mysql-mcp/mysql-read-query.md
What mysql_read_query does on Mysql Mcp
AI agents call mysql_read_query to retrieve information from Mysql Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why mysql_read_query is rated Low
This tool only retrieves or queries data via SELECT statements with no side effects. While SQL injection is theoretically possible, the description confirms use of prepared statements which mitigate that risk. The read-only constraint means no data modification, deletion, or execution of arbitrary code is possible.
From the tool's definition Tool name is 'mysql_read_query' and description explicitly states 'Execute a read-only SQL query (SELECT)' with prepared statements for safety.
Attacks that exploit this kind of access
The rule that runs mysql_read_query safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mysql Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mysql_read_query, this is the rule to start with:
mysql_read_query is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mysql Mcp, apply this rule, and every mysql_read_query call is checked against it from then on.
Questions about mysql_read_query
Execute a read-only SQL query (SELECT). Uses prepared statements for safety. It is categorised as a Read tool in the Mysql Mcp MCP Server, which means it retrieves data without modifying state.
Register the Mysql MCP server in PolicyLayer and add a rule for mysql_read_query: 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 Mcp. Nothing to install.
mysql_read_query 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_read_query 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_read_query. 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_read_query is provided by the Mysql MCP server (oci:docker.io/writenotenow/mysql-mcp:v1.0.0). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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