AI agents invoke start_security_scan to trigger actions in AWS Step Functions Tool MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Security scans are Execute-category operations because they trigger code execution or external processes whose effects depend on the target resources and scan configuration. While a security scan itself is not destructive or financial, it is a triggered operation that performs computation and may impact system state or reveal sensitive information.
From the tool's definition Tool name is 'start_security_scan' with empty description. The verb 'start' combined with 'scan' indicates triggering an operation that runs security scanning logic, likely on AWS resources.
Documented attack patterns abuse exactly the kind of access start_security_scan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AWS Step Functions Tool MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for start_security_scan:
{
"version": "1",
"default": "deny",
"tools": {
"start_security_scan": {
"limits": [
{
"counter": "start_security_scan_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}start_security_scan stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
start_security_scan. It is categorised as a Execute tool in the AWS Step Functions Tool MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the AWS Step Functions Tool MCP Server MCP server in PolicyLayer and add a rule for start_security_scan: 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 Step Functions Tool MCP Server. Nothing to install.
start_security_scan is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the start_security_scan 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 start_security_scan. 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.
start_security_scan is provided by the AWS Step Functions Tool MCP Server MCP server (awslabs.stepfunctions-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 Step Functions 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 Step Functions Tool MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.