# ebay_get_signing_keys Get all signing keys for the application. Returns public keys and metadata (private keys are not stored by eBay). Agent View of the PolicyLayer registry record for `ebay_get_signing_keys`. HTML page: https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-get-signing-keys ## Facts - Tool: `ebay_get_signing_keys` - Server: Ebay (`yosefhayim/ebay-mcp`) — https://policylayer.com/tools/yosefhayim-ebay-mcp.md - Homepage: https://github.com/YosefHayim/ebay-mcp - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Allowed ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "ebay_get_signing_keys", "arguments": {} } } ``` ## Why ebay_get_signing_keys is rated Low This is a Read operation as it queries and returns application signing keys and metadata without modifying any data. Severity is medium rather than low because signing keys, even public ones, are cryptographic credentials that could be used to impersonate the application or forge signatures if disclosed to an attacker. From the tool's own definition: "Tool performs a retrieval operation: 'Get all signing keys for the application. Returns public keys and metadata'. The description explicitly states it retrieves data with no modification or execution." ## Use case AI agents call ebay_get_signing_keys to retrieve information from Ebay without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Ebay: ```json { "version": "1", "default": "deny", "tools": { "ebay_get_signing_keys": {} } } ``` ## Other tools on Ebay (301) - `ebay_bulk_cancel_packages` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-bulk-cancel-packages.md - `ebay_bulk_delete_ads_by_inventory_reference` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-bulk-delete-ads-by-inventory-reference.md - `ebay_bulk_delete_ads_by_listing_id` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-bulk-delete-ads-by-listing-id.md - `ebay_bulk_delete_packages` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-bulk-delete-packages.md - `ebay_cancel_bundle` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-cancel-bundle.md - `ebay_cancel_package` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-cancel-package.md - `ebay_clear_tokens` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-clear-tokens.md - `ebay_delete_ad` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-ad.md - `ebay_delete_ads_by_inventory_reference` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-ads-by-inventory-reference.md - `ebay_delete_campaign` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-campaign.md - `ebay_delete_email_campaign` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-email-campaign.md - `ebay_delete_fulfillment_policy` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-fulfillment-policy.md - `ebay_delete_inventory_item` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-inventory-item.md - `ebay_delete_inventory_item_group` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-inventory-item-group.md - `ebay_delete_inventory_location` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-inventory-location.md - `ebay_delete_item_price_markdown_promotion` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-item-price-markdown-promotion.md - `ebay_delete_item_promotion` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-item-promotion.md - `ebay_delete_notification_destination` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-notification-destination.md - `ebay_delete_notification_subscription` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-notification-subscription.md - `ebay_delete_notification_subscription_filter` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-notification-subscription-filter.md - `ebay_delete_offer` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-offer.md - `ebay_delete_package` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-package.md - `ebay_delete_payment_policy` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-payment-policy.md - `ebay_delete_product_compatibility` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-product-compatibility.md - `ebay_delete_report_task` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-report-task.md - `ebay_delete_return_policy` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-return-policy.md - `ebay_delete_sales_tax` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-sales-tax.md - `ebay_delete_sku_location_mapping` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-delete-sku-location-mapping.md - `ebay_end_listing` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-end-listing.md - `ebay_withdraw_offer` — Destructive — https://policylayer.com/tools/yosefhayim-ebay-mcp/ebay-withdraw-offer.md - …and 271 more: https://policylayer.com/tools/yosefhayim-ebay-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=yosefhayim-ebay-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/yosefhayim-ebay-mcp