ebay_revise_listing

SERVEREbay SOURCEyosefhayim/ebay-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/yosefhayim-ebay-mcp/ebay-revise-listing.md

WHAT IT DOES

What ebay_revise_listing does on Ebay

AI agents use ebay_revise_listing to create or update resources in Ebay, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ebay environment.

RISK

Why ebay_revise_listing is rated Medium

This tool modifies existing listings by updating reversible fields such as quantity, price, title, and description. It is a Write operation (not Destructive, as changes are reversible; not Execute, as it doesn't run arbitrary code).

From the tool's definition Revise an existing fixed-price listing. Update quantity, price, title, description, or any other field.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ebay_revise_listing 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_revise_listing, this is the rule to start with:

ebay_revise_listing Rate-limited

ebay_revise_listing stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ebay_revise_listing": {
      "limits": [
        {
          "counter": "ebay_revise_listing_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about ebay_revise_listing

What does the ebay_revise_listing tool do? +

Revise an existing fixed-price listing. Update quantity, price, title, description, or any other field.\n\nUses the Trading API (ReviseFixedPriceItem). Only send the fields you want to change.\n\nExamples:\n- Update quantity: {. It is categorised as a Write tool in the Ebay MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ebay_revise_listing? +

Register the Ebay MCP server in PolicyLayer and add a rule for ebay_revise_listing: 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_revise_listing? +

ebay_revise_listing is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit ebay_revise_listing? +

Yes. Add a rate_limit block to the ebay_revise_listing 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_revise_listing completely? +

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

ebay_revise_listing 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

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Guides

Govern customer-ops agents →Argument validation →Scoped token →