Generate the eBay OAuth authorization URL for user consent. The user should open this URL in a browser to grant permissions to the application. This supports the OAuth 2.0 Authorization Code grant flow. The redirect URI can be provided as a parameter or will be read from EBAY_REDIRECT_URI environ...
AI agents call ebay_get_oauth_url 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 tool retrieves/generates a URL string that facilitates the OAuth flow but does not itself authenticate, authorize, execute commands, modify data, or perform destructive operations. It is a Read operation - it may query configuration (redirect URI from environment) and return a formatted URL.
From the tool's definition The tool generates and returns an OAuth authorization URL for user consent. The description states it "generates" the URL and notes that "the user should open this URL in a browser to grant permissions" - this is purely informational retrieval with no side…
Documented attack patterns abuse exactly the kind of access ebay_get_oauth_url 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_get_oauth_url:
{
"version": "1",
"default": "deny",
"tools": {
"ebay_get_oauth_url": {}
}
}ebay_get_oauth_url is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Generate the eBay OAuth authorization URL for user consent. The user should open this URL in a browser to grant permissions to the application. This supports the OAuth 2.0 Authorization Code grant flow. The redirect URI can be provided as a parameter or will be read from EBAY_REDIRECT_URI environment variable.\n\n. 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_get_oauth_url: 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_get_oauth_url 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_get_oauth_url 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_get_oauth_url. 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_get_oauth_url 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.