contact_person_save · Novaposhta MCP: Risk & Policy

WHAT IT DOES

What contact_person_save does on Novaposhta

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

WHY IT NEEDS A POLICY

Why contact_person_save needs a policy

The tool creates a new contact person record in the Nova Poshta system, which is a reversible data modification (the sibling tool 'contact_person_delete' indicates records can be removed). This is a Write operation rather than Destructive.

From the tool's definition Tool name 'contact_person_save' and description 'Create new contact person' explicitly indicate creation of new data. Documentation reference to 'ContactPerson/save' API endpoint confirms write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

contact_person_save Rate-limited

contact_person_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": {
    "contact_person_save": {
      "limits": [
        {
          "counter": "contact_person_save_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about contact_person_save

What does the contact_person_save tool do? +

Create new contact person for a counterparty via ContactPerson/save (doc 1.26). Docs require entering all fields in Ukrainian and with an API key; response returns the Ref/Description pair referenced in waybills. It is categorised as a Write tool in the Novaposhta MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on contact_person_save? +

Register the Novaposhta MCP server in PolicyLayer and add a rule for contact_person_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 Novaposhta. Nothing to install.

What risk level is contact_person_save? +

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

Can I rate-limit contact_person_save? +

Yes. Add a rate_limit block to the contact_person_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 contact_person_save completely? +

Set action: deny in the PolicyLayer policy for contact_person_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 contact_person_save? +

contact_person_save is provided by the Novaposhta MCP server (@shopana/novaposhta-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.