infracost_cloud_upload_custom_properties

WHAT IT DOES

What infracost_cloud_upload_custom_properties does on Infracost MCP Server

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

WHY IT NEEDS A POLICY

Why infracost_cloud_upload_custom_properties needs a policy

This tool performs a Write operation: it uploads and persists custom property values to Infracost Cloud, modifying the classification state of cloud resources. While reversible (properties could theoretically be updated or deleted separately), the upload itself creates or modifies data in the remote system.

From the tool's definition The tool description states it "Upload[s] custom property values to Infracost Cloud via CSV," which is a creation/modification operation that persists data in a remote system (Infracost Cloud).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

infracost_cloud_upload_custom_properties Rate-limited

infracost_cloud_upload_custom_properties 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": {
    "infracost_cloud_upload_custom_properties": {
      "limits": [
        {
          "counter": "infracost_cloud_upload_custom_properties_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 Infracost MCP Server, so you can run agents against it safely.

FAQ

Questions about infracost_cloud_upload_custom_properties

What does the infracost_cloud_upload_custom_properties tool do? +

Upload custom property values to Infracost Cloud via CSV for resource classification. Requires INFRACOST_SERVICE_TOKEN environment variable. It is categorised as a Write tool in the Infracost 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 infracost_cloud_upload_custom_properties? +

Register the Infracost MCP Server MCP server in PolicyLayer and add a rule for infracost_cloud_upload_custom_properties: 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 Infracost MCP Server. Nothing to install.

What risk level is infracost_cloud_upload_custom_properties? +

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

Can I rate-limit infracost_cloud_upload_custom_properties? +

Yes. Add a rate_limit block to the infracost_cloud_upload_custom_properties 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 infracost_cloud_upload_custom_properties completely? +

Set action: deny in the PolicyLayer policy for infracost_cloud_upload_custom_properties. 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 infracost_cloud_upload_custom_properties? +

infracost_cloud_upload_custom_properties is provided by the Infracost MCP Server MCP server (phildougherty/infracost_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.