create_resolver · AWS IoT SiteWise MCP Server MCP

WHAT IT DOES

What create_resolver does on AWS IoT SiteWise MCP Server

AI agents use create_resolver to create or update resources in AWS IoT SiteWise MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AWS IoT SiteWise MCP Server environment.

WHY IT NEEDS A POLICY

Why create_resolver needs a policy

The 'create' prefix indicates a Write operation that creates new configuration data. Without a specific description, confidence is moderate. In AWS IoT SiteWise, resolvers typically handle data transformations and routing, making accidental misconfiguration or spam creation a medium-severity risk rather than high—the operation is reversible (deletable) and doesn't directly execute arbitrary code or cause financial…

From the tool's definition Tool name 'create_resolver' with 'create' prefix indicates data creation. Based on AWS IoT SiteWise context and sibling tool patterns, this likely creates resolver configurations for data mappings or transformations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_resolver Rate-limited

create_resolver stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_resolver": {
      "limits": [
        {
          "counter": "create_resolver_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches AWS IoT SiteWise MCP Server, so you can run agents against it safely.

FAQ

Questions about create_resolver

What does the create_resolver tool do? +

create_resolver. It is categorised as a Write tool in the AWS IoT SiteWise MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_resolver? +

Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for create_resolver: 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 IoT SiteWise MCP Server. Nothing to install.

What risk level is create_resolver? +

create_resolver is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_resolver? +

Yes. Add a rate_limit block to the create_resolver 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.

How do I block create_resolver completely? +

Set action: deny in the PolicyLayer policy for create_resolver. 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.

What MCP server provides create_resolver? +

create_resolver is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.