AI agents use ebay_send_offer_to_interested_buyers 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 writes new offer records to the eBay system targeting interested buyers. While it doesn't immediately move money (Financial category) or irreversibly destroy data (Destructive), it creates new marketplace commitments and communications that can affect multiple parties.
From the tool's definition Tool sends/creates offers to buyers, which is a transactional action that modifies buyer-seller relationships and marketplace state. The verb 'send' combined with 'offer' indicates outbound communication that creates new marketplace records.
Documented attack patterns abuse exactly the kind of access ebay_send_offer_to_interested_buyers 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_send_offer_to_interested_buyers:
{
"version": "1",
"default": "deny",
"tools": {
"ebay_send_offer_to_interested_buyers": {
"limits": [
{
"counter": "ebay_send_offer_to_interested_buyers_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ebay_send_offer_to_interested_buyers 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.
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Send offer to interested buyers. 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_send_offer_to_interested_buyers: 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_send_offer_to_interested_buyers 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_send_offer_to_interested_buyers 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_send_offer_to_interested_buyers. 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_send_offer_to_interested_buyers 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.