ebay_get_signing_keys

Get all signing keys for the application. Returns public keys and metadata (private keys are not stored by eBay).

SERVEREbay SOURCEyosefhayim/ebay-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/yosefhayim-ebay-mcp/ebay-get-signing-keys.md

WHAT IT DOES

What ebay_get_signing_keys does on Ebay

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.

RISK

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 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.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ebay_get_signing_keys 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_get_signing_keys, this is the rule to start with:

ebay_get_signing_keys Allowed

ebay_get_signing_keys is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ebay_get_signing_keys": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ebay, apply this rule, and every ebay_get_signing_keys call is checked against it from then on.

FAQ

Questions about ebay_get_signing_keys

What does the ebay_get_signing_keys tool do? +

Get all signing keys for the application. Returns public keys and metadata (private keys are not stored by eBay). It is categorised as a Read tool in the Ebay MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on ebay_get_signing_keys? +

Register the Ebay MCP server in PolicyLayer and add a rule for ebay_get_signing_keys: 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.

What risk level is ebay_get_signing_keys? +

ebay_get_signing_keys is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit ebay_get_signing_keys? +

Yes. Add a rate_limit block to the ebay_get_signing_keys 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.

How do I block ebay_get_signing_keys completely? +

Set action: deny in the PolicyLayer policy for ebay_get_signing_keys. 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.

What MCP server provides ebay_get_signing_keys? +

ebay_get_signing_keys 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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