infracost_upload · Infracost MCP Server MCP: Risk & Policy

WHAT IT DOES

What infracost_upload does on Infracost MCP Server

AI agents use infracost_upload 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_upload needs a policy

This tool uploads data to a cloud system, creating new records or updating centralized tracking. While it does not delete, destroy, or move money, it writes/creates persistent data in a remote service.

From the tool's definition Tool description states it will 'Upload Infracost JSON output to Infracost Cloud' — this is a create/store operation that modifies state in a remote system (Infracost Cloud) by adding new cost data records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

infracost_upload Rate-limited

infracost_upload 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_upload": {
      "limits": [
        {
          "counter": "infracost_upload_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_upload

What does the infracost_upload tool do? +

Upload Infracost JSON output to Infracost Cloud for centralized cost tracking and reporting. Requires infracost CLI to be installed. 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_upload? +

Register the Infracost MCP Server MCP server in PolicyLayer and add a rule for infracost_upload: 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_upload? +

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

Can I rate-limit infracost_upload? +

Yes. Add a rate_limit block to the infracost_upload 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_upload completely? +

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

infracost_upload 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.