register_account · Paraph MCP: Risk & Policy

WHAT IT DOES

What register_account does on Paraph

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

WHY IT NEEDS A POLICY

Why register_account needs a policy

This tool creates new account data in the Paraph system, making it a Write operation. Severity is medium because while account creation is reversible (accounts can typically be deleted), it creates persistent identities in the system that could be used for abuse or unauthorized access, especially given the context of managing e-signature workflows.

From the tool's definition The tool 'register_account' creates a new Paraph account, which is a write operation that creates data in the system. The description explicitly states it 'Create[s] a new Paraph account' and involves sending a verification email.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

register_account Rate-limited

register_account 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": {
    "register_account": {
      "limits": [
        {
          "counter": "register_account_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 Paraph, so you can run agents against it safely.

FAQ

Questions about register_account

What does the register_account tool do? +

Create a new Paraph account. Sends a verification email — the user must click the link before logging in. After verifying, retrieve your API key from https://paraph.dev and set it as PARAPH_API_KEY. It is categorised as a Write tool in the Paraph MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on register_account? +

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

What risk level is register_account? +

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

Can I rate-limit register_account? +

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

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

register_account is provided by the Paraph MCP server (servants-of-the-server-fire/paraph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.