oneclick_get_transaction_by_buy_order

THE RISK

Low Risk

Why oneclick_get_transaction_by_buy_order needs a policy

This tool retrieves transaction information by querying with a buy_order identifier. It performs a lookup without side effects, matching the Read category definition: 'retrieves or queries data; no side effects'. The low severity reflects minimal blast radius if misused — an AI agent could only retrieve existing transaction data, not modify, delete, or execute external operations.

From the tool's definition Tool name contains 'get' and description states 'Look up a OneClick Mall transaction' — a retrieval operation with no modification or deletion of data.

Documented attack patterns abuse exactly the kind of access oneclick_get_transaction_by_buy_order gives an agent:

POLICY

How to control oneclick_get_transaction_by_buy_order

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for oneclick_get_transaction_by_buy_order:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "oneclick_get_transaction_by_buy_order": {}
  }
}

oneclick_get_transaction_by_buy_order is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about oneclick_get_transaction_by_buy_order

What does the oneclick_get_transaction_by_buy_order tool do? +

Look up a OneClick Mall transaction by parent buy_order. Functionally identical to oneclick_status — provided as an explicit name for agents that follow the. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on oneclick_get_transaction_by_buy_order? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for oneclick_get_transaction_by_buy_order: 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 Mcp Afip. Nothing to install.

What risk level is oneclick_get_transaction_by_buy_order? +

oneclick_get_transaction_by_buy_order is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit oneclick_get_transaction_by_buy_order? +

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

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

oneclick_get_transaction_by_buy_order is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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