Create multiple ads using listing IDs. Maximum 500 listings per call. Supports both CPS and CPC campaigns.
AI agents use ebay_bulk_create_ads_by_listing_id 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.
This tool creates marketing campaign advertisements, which is a reversible write operation. While it affects advertising spend and visibility, it does not commit financial transactions, delete data, or execute arbitrary code. The blast radius is medium because misconfigured bulk ad creation could waste marketing budget or create unintended campaign spam, but changes can be undone by deleting the ads.
From the tool's definition Tool creates multiple ads (up to 500 per call) using listing IDs for eBay marketing campaigns. The verb 'create' and action of establishing new advertising entities indicates reversible data creation.
Documented attack patterns abuse exactly the kind of access ebay_bulk_create_ads_by_listing_id gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ebay, and nothing reaches the server without passing your rules. This is the rule we recommend for ebay_bulk_create_ads_by_listing_id:
{
"version": "1",
"default": "deny",
"tools": {
"ebay_bulk_create_ads_by_listing_id": {
"limits": [
{
"counter": "ebay_bulk_create_ads_by_listing_id_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ebay_bulk_create_ads_by_listing_id 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.
Free to start. No card required.
Create multiple ads using listing IDs. Maximum 500 listings per call. Supports both CPS and CPC campaigns. 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.
Register the Ebay MCP server in PolicyLayer and add a rule for ebay_bulk_create_ads_by_listing_id: 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.
ebay_bulk_create_ads_by_listing_id is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the ebay_bulk_create_ads_by_listing_id 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.
Set action: deny in the PolicyLayer policy for ebay_bulk_create_ads_by_listing_id. 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.
ebay_bulk_create_ads_by_listing_id 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.
Deterministic rules across all 332 Ebay tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
332 Ebay tools catalogued and risk-classified — across an index of 42,500+ MCP servers.