ebay_exchange_authorization_code

SERVEREbay SOURCEyosefhayim/ebay-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/yosefhayim-ebay-mcp/ebay-exchange-authorization-code.md

WHAT IT DOES

What ebay_exchange_authorization_code does on Ebay

AI agents use ebay_exchange_authorization_code 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 ebay_exchange_authorization_code is rated Medium

This tool completes an OAuth flow and stores credentials (tokens) that grant API access. It writes/stores authentication tokens persistently. While it doesn't directly move money or delete data, it creates persistent authorization credentials that could be misused to perform any action on the user's eBay account, making it high severity.

From the tool's definition Exchange an OAuth authorization code for access and refresh tokens... The tokens will be automatically stored and used for subsequent API requests.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

ebay_exchange_authorization_code Rate-limited

ebay_exchange_authorization_code 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": {
    "ebay_exchange_authorization_code": {
      "limits": [
        {
          "counter": "ebay_exchange_authorization_code_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 ebay_exchange_authorization_code call is checked against it from then on.

FAQ

Questions about ebay_exchange_authorization_code

What does the ebay_exchange_authorization_code tool do? +

Exchange an OAuth authorization code for access and refresh tokens. This completes the OAuth 2.0 Authorization Code grant flow. After the user authorizes the application using the URL from ebay_get_oauth_url, eBay redirects back with an authorization code in the URL. Use this tool to exchange that code for tokens that can be used to make API calls. The tokens will be automatically stored and used for subsequent API requests.\n\n. 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 ebay_exchange_authorization_code? +

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

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

Can I rate-limit ebay_exchange_authorization_code? +

Yes. Add a rate_limit block to the ebay_exchange_authorization_code 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_exchange_authorization_code completely? +

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

ebay_exchange_authorization_code 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.

KEEP EXPLORING

More on Ebay, and thousands of servers like it.

This server

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generate_and_fetch_code on Stitch MCP Server → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →