ebay_attach_media_to_inventory_item
Upload local pictures and/or a video and attach them to an existing inventory item: reads the item, uploads every file in order, then rewrites only product.imageUrls and product.videoIds (appending by default, replacing with replaceExisting). Everything else on the item is preserved and no offer ...
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What ebay_attach_media_to_inventory_item does on Ebay
AI agents use ebay_attach_media_to_inventory_item 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.
Why ebay_attach_media_to_inventory_item is rated Medium
Modifies inventory item metadata reversibly by adding or replacing media without publishing or deleting data.
From the tool's definition upload files, attach them to existing inventory item, appends or replaces product images/videos
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs ebay_attach_media_to_inventory_item 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_attach_media_to_inventory_item, this is the rule to start with:
ebay_attach_media_to_inventory_item 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Ebay, apply this rule, and every ebay_attach_media_to_inventory_item call is checked against it from then on.
Questions about ebay_attach_media_to_inventory_item
Upload local pictures and/or a video and attach them to an existing inventory item: reads the item, uploads every file in order, then rewrites only product.imageUrls and product.videoIds (appending by default, replacing with replaceExisting). Everything else on the item is preserved and no offer is published. If any upload fails the item is left untouched and the per-file results are returned in the error, unless allowPartial is true.\n\n${MEDIA_ACCESS_NOTE}. 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_attach_media_to_inventory_item: 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_attach_media_to_inventory_item 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_attach_media_to_inventory_item 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_attach_media_to_inventory_item. 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_attach_media_to_inventory_item 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.
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