ebay_register_client

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-register-client.md

WHAT IT DOES

What ebay_register_client does on Ebay

AI agents use ebay_register_client 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_register_client is rated Critical

This tool registers a financial application under Open Banking / PSD2 frameworks, which directly establishes financial access rights and obligations. Registering a third-party financial app can grant it access to payment flows and financial data on eBay.

From the tool's definition Register a third party financial application with eBay (Open Banking / PSD2). Requires valid eIDAS certificate via MTLS.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ebay_register_client 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_register_client, this is the rule to start with:

ebay_register_client Approval-gated

Any call to ebay_register_client 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_register_client": {
      "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_register_client call is checked against it from then on.

FAQ

Questions about ebay_register_client

What does the ebay_register_client tool do? +

Register a third party financial application with eBay (Open Banking / PSD2). Requires valid eIDAS certificate via MTLS. 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_register_client? +

Register the Ebay MCP server in PolicyLayer and add a rule for ebay_register_client: 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_register_client? +

ebay_register_client 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_register_client? +

Yes. Add a rate_limit block to the ebay_register_client 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_register_client completely? +

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

ebay_register_client 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 →