chrome_fill_form

Intelligently fill out a form with multiple fields

SERVERChrome Feedback SOURCE2019-02-18/mcx

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/2019-02-18-mcx/chrome-fill-form.md

WHAT IT DOES

What chrome_fill_form does on Chrome Feedback

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

RISK

Why chrome_fill_form is rated Medium

This tool creates or modifies data in web forms reversibly. While it can change form state, the modifications are typically not destructive (forms can be cleared or resubmitted). However, the reversibility depends on context—filling sensitive forms (login, payment, etc.) could have side effects.

From the tool's definition Tool name 'chrome_fill_form' and description 'Intelligently fill out a form with multiple fields' indicate data modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs chrome_fill_form safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Chrome Feedback, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For chrome_fill_form, this is the rule to start with:

chrome_fill_form Rate-limited

chrome_fill_form 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": {
    "chrome_fill_form": {
      "limits": [
        {
          "counter": "chrome_fill_form_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Chrome Feedback, apply this rule, and every chrome_fill_form call is checked against it from then on.

FAQ

Questions about chrome_fill_form

What does the chrome_fill_form tool do? +

Intelligently fill out a form with multiple fields. It is categorised as a Write tool in the Chrome Feedback MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on chrome_fill_form? +

Register the Chrome Feedback MCP server in PolicyLayer and add a rule for chrome_fill_form: 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 Chrome Feedback. Nothing to install.

What risk level is chrome_fill_form? +

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

Can I rate-limit chrome_fill_form? +

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

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

chrome_fill_form is provided by the Chrome Feedback MCP server (2019-02-18/mcx). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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