Get the full DDL of a scheduled event
AI agents call get_event_ddl to retrieve information from Querybridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves the Data Definition Language (DDL) statement for a scheduled database event, which is a read-only metadata query. It falls under the Read category as it queries and retrieves information without side effects. Severity is low because accessing DDL information poses minimal risk—it exposes schema details but cannot modify, execute, or delete data.
From the tool's definition Tool name 'get_event_ddl' and description 'Get the full DDL of a scheduled event' indicate retrieval of database object metadata. DDL retrieval is a read-only query operation that does not modify, execute, or delete any data or database objects.
Attacks that exploit this kind of access
Get the full DDL of a scheduled event. It is categorised as a Read tool in the Querybridge MCP Server, which means it retrieves data without modifying state.
Register the Querybridge MCP server in PolicyLayer and add a rule for get_event_ddl: 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 Querybridge. Nothing to install.
get_event_ddl 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_event_ddl 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_event_ddl. 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_event_ddl is provided by the Querybridge MCP server (mahmoudhassanmustafa/querybridge-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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