AI agents call get_oceanbase_tenant_top_sql to retrieve information from Mcp Oceanbase without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on the tool name pattern, this appears to retrieve top SQL metrics or statistics from an OceanBase tenant, which is a read operation that queries data without modification. However, access to top SQL information could expose sensitive query patterns or performance data, warranting medium severity. The empty description prevents higher confidence assignment.
From the tool's definition Tool name contains 'get_oceanbase_tenant_top_sql' which suggests querying/retrieving SQL execution data. The 'get_' prefix indicates a read operation. Description is empty, reducing confidence slightly.
Documented attack patterns abuse exactly the kind of access get_oceanbase_tenant_top_sql gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Oceanbase, and nothing reaches the server without passing your rules. This is the rule we recommend for get_oceanbase_tenant_top_sql:
{
"version": "1",
"default": "deny",
"tools": {
"get_oceanbase_tenant_top_sql": {}
}
}get_oceanbase_tenant_top_sql is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_oceanbase_tenant_top_sql. It is categorised as a Read tool in the Mcp Oceanbase MCP Server, which means it retrieves data without modifying state.
Register the Mcp Oceanbase MCP server in PolicyLayer and add a rule for get_oceanbase_tenant_top_sql: 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 Mcp Oceanbase. Nothing to install.
get_oceanbase_tenant_top_sql 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 get_oceanbase_tenant_top_sql 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 get_oceanbase_tenant_top_sql. 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.
get_oceanbase_tenant_top_sql is provided by the Mcp Oceanbase MCP server (oceanbase/awesome-oceanbase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 134 Mcp Oceanbase tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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134 Mcp Oceanbase tools catalogued and risk-classified — across an index of 42,500+ MCP servers.