fill_and_save · Report MCP: Risk & Policy

WHAT IT DOES

What fill_and_save does on Report

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

WHY IT NEEDS A POLICY

Why fill_and_save needs a policy

The tool modifies existing templates by populating them with content and persists those changes to disk via file save operations. This is reversible (files can be edited or deleted afterward), so it is Write rather than Destructive. While the description for this specific tool is empty, the server description and tool name provide sufficient context.

From the tool's definition Tool name 'fill_and_save' combined with server description stating it 'filling uploaded document templates' and 'saving as files' indicates the tool creates or modifies document files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fill_and_save Rate-limited

fill_and_save 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": {
    "fill_and_save": {
      "limits": [
        {
          "counter": "fill_and_save_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 Report, so you can run agents against it safely.

FAQ

Questions about fill_and_save

What does the fill_and_save tool do? +

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

How do I enforce a policy on fill_and_save? +

Register the Report MCP server in PolicyLayer and add a rule for fill_and_save: 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 Report. Nothing to install.

What risk level is fill_and_save? +

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

Can I rate-limit fill_and_save? +

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

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

fill_and_save is provided by the Report MCP server (jaykim429/report-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.