Deletes a Timestream for InfluxDB DB instance by the instance-identifier
AI agents call DeleteDbInstance to permanently remove resources in AWS Lambda Tool MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool performs a destructive action by permanently deleting a database instance. According to the classification rules, Destructive actions that irreversibly delete data take priority over other categories. The blast radius is high because deleting a DB instance destroys all data stored within it and disrupts services depending on that instance.
From the tool's definition Tool name is 'DeleteDbInstance' and description states it 'Deletes a Timestream for InfluxDB DB instance' — this is an irreversible deletion operation that cannot be undone.
Documented attack patterns abuse exactly the kind of access DeleteDbInstance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AWS Lambda Tool MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for DeleteDbInstance:
{
"version": "1",
"default": "deny",
"hide": [
"DeleteDbInstance"
]
}DeleteDbInstance disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Deletes a Timestream for InfluxDB DB instance by the instance-identifier. It is categorised as a Destructive tool in the AWS Lambda Tool MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the AWS Lambda Tool MCP Server MCP server in PolicyLayer and add a rule for DeleteDbInstance: 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 AWS Lambda Tool MCP Server. Nothing to install.
DeleteDbInstance is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the DeleteDbInstance 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 DeleteDbInstance. 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.
DeleteDbInstance is provided by the AWS Lambda Tool MCP Server MCP server (awslabs.lambda-tool-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AWS Lambda Tool MCP Server, 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.
805 AWS Lambda Tool MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.