Display all eBay API credentials and current token information. Shows client ID, client secret (masked), environment (production/sandbox), redirect URI, and current token status including access token (masked), refresh token (masked), app token (masked), and their expiry times. Useful for debuggi...
AI agents call ebay_display_credentials to retrieve information from Ebay without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a Read operation—it retrieves credential and token information without modifying or executing anything. However, severity is high because exposing authentication credentials (even in masked form) and token metadata could enable attackers to understand the system's authentication architecture, facilitate token replay attacks, or support credential compromise.
From the tool's definition Tool 'ebay_display_credentials' displays eBay API credentials including client ID, client secret (masked), redirect URI, access token (masked), refresh token (masked), and app token (masked).
Documented attack patterns abuse exactly the kind of access ebay_display_credentials 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_display_credentials:
{
"version": "1",
"default": "deny",
"tools": {
"ebay_display_credentials": {}
}
}ebay_display_credentials is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Display all eBay API credentials and current token information. Shows client ID, client secret (masked), environment (production/sandbox), redirect URI, and current token status including access token (masked), refresh token (masked), app token (masked), and their expiry times. Useful for debugging authentication issues and verifying configuration. It is categorised as a Read tool in the Ebay MCP Server, which means it retrieves data without modifying state.
Register the Ebay MCP server in PolicyLayer and add a rule for ebay_display_credentials: 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_display_credentials is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ebay_display_credentials 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_display_credentials. 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_display_credentials 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.