Generate security-approved IAM policy for DynamoDB Streams ESM with scoped permissions. Uses pre-approved templates, not LLM generation.
AI agents call secure_esm_dynamodb_policy to retrieve information from Prometheus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool generates (outputs) an IAM policy document using pre-approved templates. It does not apply, attach, or deploy the policy — it only produces a policy definition. This is effectively a read/query operation returning a structured artifact. No side effects on any system are implied. Severity is low since misuse at most produces a policy document that still needs to be applied separately.
From the tool's definition 'Generate security-approved IAM policy for DynamoDB Streams ESM with scoped permissions. Uses pre-approved templates, not LLM generation.'
Documented attack patterns abuse exactly the kind of access secure_esm_dynamodb_policy gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Prometheus MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for secure_esm_dynamodb_policy:
{
"version": "1",
"default": "deny",
"tools": {
"secure_esm_dynamodb_policy": {}
}
}secure_esm_dynamodb_policy is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Generate security-approved IAM policy for DynamoDB Streams ESM with scoped permissions. Uses pre-approved templates, not LLM generation. It is categorised as a Read tool in the Prometheus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for secure_esm_dynamodb_policy: 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 Prometheus MCP Server. Nothing to install.
secure_esm_dynamodb_policy 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 secure_esm_dynamodb_policy 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 secure_esm_dynamodb_policy. 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.
secure_esm_dynamodb_policy is provided by the Prometheus MCP Server MCP server (awslabs.prometheus-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Prometheus MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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