submit_form · Visual Annotation MCP: Risk & Policy

WHAT IT DOES

What submit_form does on Visual Annotation MCP

AI agents invoke submit_form to trigger actions in Visual Annotation MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why submit_form needs a policy

Submitting a form triggers an external operation whose effects depend on the form's contents and target — it can create accounts, send messages, make purchases, or perform any server-side action. This is an Execute-class action with high severity because an AI agent could misuse it to submit arbitrary data to web services, with potentially irreversible or wide-ranging consequences depending on the form's purpose.

From the tool's definition Submit a form by form selector/id or clicking submit-capable element

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

submit_form Rate-limited

submit_form stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "submit_form": {
      "limits": [
        {
          "counter": "submit_form_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about submit_form

What does the submit_form tool do? +

Submit a form by form selector/id or clicking submit-capable element. It is categorised as a Execute tool in the Visual Annotation MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on submit_form? +

Register the Visual Annotation MCP server in PolicyLayer and add a rule for submit_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 Visual Annotation MCP. Nothing to install.

What risk level is submit_form? +

submit_form is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit submit_form? +

Yes. Add a rate_limit block to the submit_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 submit_form completely? +

Set action: deny in the PolicyLayer policy for submit_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 submit_form? +

submit_form is provided by the Visual Annotation MCP server (mstocker1/visual_annotation_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.