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OFFERGOBLIN

In ChatGPT and Claude

Ask for interview questions and the card shows up in the chat. Tap an answer. It grades you and deals the next one.

ChatGPT with an OFFERGOBLIN question card in the conversation: the question, four options, and the chat box below
  • Practice inside ChatGPT or Claude, without opening another tab.
  • Ask follow-ups on any card.
  • Go deep: the line to say out loud, the trap, and the full mechanics.
  • Today's DAILY5, the same five questions as everyone else.
  • GOBLIN100, from where you left off on the site.

Get it

OFFERGOBLIN is on its way to the ChatGPT and Claude directories. Until it shows up there, add it yourself with the steps below. Two minutes, and you do it once.

ChatGPT

  1. Open chatgpt.com/plugins and click Add, top right.
  2. Pick Add custom MCP server.
  3. Name it OFFERGOBLIN.
  4. Copy this address and paste it into Server URL:
    https://www.offergoblin.com/api/mcp
  5. Leave Authentication on OAuth. Tick the box at the bottom and click Create as a plugin.
  6. An OFFERGOBLIN page opens. Sign in with Google and click Allow.
  7. Start a new chat and send this:
    Give me some IB interview questions

Custom servers need a paid ChatGPT plan. If you cannot find Add custom MCP server, that is why.

Claude

  1. Open claude.ai/settings/connectors and click Add custom connector.
  2. Name it OFFERGOBLIN.
  3. Copy this address and paste it into the URL box. Click Add.
    https://www.offergoblin.com/api/mcp
  4. Click Connect. Sign in with Google and click Allow.
  5. In a new chat, send this:
    Give me some IB interview questions

A free Claude account gets one custom connector. This can be it.

The sign-in

This is the page the chat opens the first time. Google, then Allow. If you do not have an OFFERGOBLIN account yet, signing in makes one.

The OFFERGOBLIN sign-in page: Connect ChatGPT, with a Google sign-in button

What to say

  • “Give me some IB interview questions”
  • “Quiz me on enterprise value”
  • “What's today's five?”
  • “Talk me through it”

Ask for an open question and answer in your own words. The chat checks you against the answer card.

Stuck?

Email support@offergoblin.com and say which step you are on. The rest of OFFERGOBLIN is at offergoblin.com.