accept_return_offer

THE RISK

Critical Risk

Why accept_return_offer needs a policy

Accepting a return offer in an e-invoicing/tax authority context likely involves committing to a refund or credit note, which constitutes a financial obligation. The description is truncated ('Accept the buyer') which lowers confidence, but the tool name and server context strongly suggest a financial transaction. Classified as Financial due to the potential monetary commitment involved.

From the tool's definition 'accept_return_offer' and 'Accept the buyer' — accepting a return offer implies committing to a financial obligation (refund or merchandise return with financial consequence) in the context of an AFIP/invoicing server

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

POLICY

How to control accept_return_offer

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 accept_return_offer:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "accept_return_offer": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to accept_return_offer is blocked until a human approves it. The rest of the server keeps working.

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EXPLORE

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Go deeper

Critical-risk tools in Mcp Afip → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about accept_return_offer

What does the accept_return_offer tool do? +

Accept the buyer. It is categorised as a Financial tool in the Mcp Afip MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on accept_return_offer? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for accept_return_offer: 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 accept_return_offer? +

accept_return_offer is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit accept_return_offer? +

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

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

accept_return_offer 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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