Analyze lock contention and waits.
AI agents call mysql_lock_contention 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.
The tool performs analysis of lock contention and wait information, which is a read/monitoring operation. The server description also emphasizes 'read-only queries, performance analysis, and server monitoring', further supporting this classification. No write or destructive operations are implied.
From the tool's definition 'Analyze lock contention and waits' — the tool analyzes/reads lock contention data without modifying state.
Documented attack patterns abuse exactly the kind of access mysql_lock_contention 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_lock_contention:
{
"version": "1",
"default": "deny",
"tools": {
"mysql_lock_contention": {}
}
}mysql_lock_contention is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Analyze lock contention and waits. 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_lock_contention: 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_lock_contention 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_lock_contention 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_lock_contention. 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_lock_contention 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.
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233 Mysql tools catalogued and risk-classified — across an index of 43,000+ MCP servers.