Create new counterparty (private person or organization) with Counterparty/save (docs 1.20–1.21). Provide CityRef + CounterpartyProperty/Type; private persons require first/last name while organizations must also send OwnershipForm and EDRPOU. Docs recommend refreshing supporting directories mont...
AI agents use counterparty_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.
The tool creates new counterparty records in the Nova Poshta system. This is a reversible write operation that modifies the backend database by inserting new data. It does not execute arbitrary code, delete data irreversibly, or involve financial transactions.
From the tool's definition Tool description states "Create new counterparty (private person or organization)" and specifies required fields for creation (first/last name for persons, OwnershipForm and EDRPOU for organizations).
Attacks that exploit this kind of access
Create new counterparty (private person or organization) with Counterparty/save (docs 1.20–1.21). Provide CityRef + CounterpartyProperty/Type; private persons require first/last name while organizations must also send OwnershipForm and EDRPOU. Docs recommend refreshing supporting directories monthly and note an API key is required. 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.
Register the Novaposhta MCP server in PolicyLayer and add a rule for counterparty_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.
counterparty_save is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the counterparty_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.
Set action: deny in the PolicyLayer policy for counterparty_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.
counterparty_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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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