complete_user_auth

A write tool on the Ebay MCP server.

SERVEREbay SOURCEacato/ebay-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/acato-ebay-mcp/complete-user-auth.md

WHAT IT DOES

What complete_user_auth does on Ebay

AI agents use complete_user_auth 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.

RISK

Why complete_user_auth is rated Medium

An AI agent can call complete_user_auth faster than any human can review: one bad instruction and it creates or modifies resources in Ebay by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

complete_user_auth Rate-limited

complete_user_auth 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "complete_user_auth": {
      "limits": [
        {
          "counter": "complete_user_auth_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about complete_user_auth

What does the complete_user_auth tool do? +

complete_user_auth is a write tool on the Ebay MCP server. 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.

How do I enforce a policy on complete_user_auth? +

Register the Ebay MCP server in PolicyLayer and add a rule for complete_user_auth: 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 complete_user_auth? +

complete_user_auth is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit complete_user_auth? +

Yes. Add a rate_limit block to the complete_user_auth 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 complete_user_auth completely? +

Set action: deny in the PolicyLayer policy for complete_user_auth. 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 complete_user_auth? +

complete_user_auth is provided by the Ebay MCP server (acato/ebay-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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