ebay_update_bid

Update bid through the eBay Marketing API.

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-update-bid.md

WHAT IT DOES

What ebay_update_bid does on Ebay

AI agents use ebay_update_bid 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_update_bid is rated Critical

Updating a bid on eBay's Marketing API directly affects financial spending commitments for advertising campaigns. Bids control how much money is spent per click or impression in eBay's promoted listings or ad auctions. Misuse could result in significantly increased advertising spend or wasted budget, placing this firmly in the Financial category.

From the tool's definition Update bid through the eBay Marketing API

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ebay_update_bid 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_update_bid, this is the rule to start with:

ebay_update_bid Approval-gated

Any call to ebay_update_bid 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_update_bid": {
      "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_update_bid call is checked against it from then on.

FAQ

Questions about ebay_update_bid

What does the ebay_update_bid tool do? +

Update bid through the eBay Marketing API. 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_update_bid? +

Register the Ebay MCP server in PolicyLayer and add a rule for ebay_update_bid: 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_update_bid? +

ebay_update_bid 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_update_bid? +

Yes. Add a rate_limit block to the ebay_update_bid 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_update_bid completely? +

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

ebay_update_bid 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

place_bid on Ebay → All critical-risk MCP tools → The MCP Attack Database →

Guides

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