ebay_issue_refund

SERVEREbay SOURCEyosefhayim/ebay-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/yosefhayim-ebay-mcp/ebay-issue-refund.md

WHAT IT DOES

What ebay_issue_refund does on Ebay

AI agents use ebay_issue_refund to commit financial operations through Ebay, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why ebay_issue_refund is rated Critical

This tool directly transfers money from a merchant's eBay account to a buyer, making it a financial operation. The ability to issue refunds of arbitrary amounts constitutes a direct financial commitment with real monetary consequences. This is the highest severity category due to the irreversible nature of fund transfers and the potential for significant financial loss if misused by an AI agent.

From the tool's definition Tool name is 'ebay_issue_refund' and description states 'Issue a full or partial refund for an eBay order' with ability to 'refund buyers for orders, including specifying the refund amount.' This directly moves money (refund payments) and commits financial…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ebay_issue_refund safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Ebay, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ebay_issue_refund, this is the rule to start with:

ebay_issue_refund Approval-gated

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

View as policy code

policy.json

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

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ebay, apply this rule, and every ebay_issue_refund call is checked against it from then on.

FAQ

Questions about ebay_issue_refund

What does the ebay_issue_refund tool do? +

Issue a full or partial refund for an eBay order. Use this to refund buyers for orders, including specifying the refund amount and reason.\n\nRequired OAuth Scope: sell.fulfillment\nMinimum Scope: https://api.ebay.com/oauth/api_scope/sell.fulfillment. It is categorised as a Financial tool in the Ebay MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on ebay_issue_refund? +

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

What risk level is ebay_issue_refund? +

ebay_issue_refund 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 ebay_issue_refund? +

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

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

ebay_issue_refund is provided by the Ebay MCP server (yosefhayim/ebay-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Ebay, and thousands of servers like it.

This server

All 302 Ebay tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →