A GunBroker seller runs on three lists. What is selling, what is sitting, and what still needs a box and a label. The marketplace dashboard shows each one on a different screen, and none of them talk to each other.
Connect GunBroker to ChatGPT through CorpusIQ and the three lists become one conversation. ChatGPT reads your account when you ask and answers with the listings behind the number.
The problem with the current workflow
Checking sales means opening sold items. Checking dead stock means opening unsold items, then adding up prices by hand. Checking the shipping queue means a third view. Checking feedback means a fourth.
So the month-over-month question ("are we up or down?") gets answered once a quarter, if at all. Slow listings sit for weeks because nobody priced the pile.
How CorpusIQ solves it
CorpusIQ exposes GunBroker to ChatGPT through the Model Context Protocol, an open standard that lets an AI assistant call external tools. ChatGPT can read your selling, sold, unsold and scheduled listings, your orders and fulfillment status, and your feedback and account summaries.
Read-only. The connection uses a read-only API key. ChatGPT cannot relist, reprice or fulfill anything.
Live. Each question reads GunBroker when you ask.
Revocable. Revoke the key in GunBroker or disconnect in CorpusIQ.
What to ask
Paste these into ChatGPT once GunBroker is connected.
- "Which listings are selling fastest this month?"
- "What is my current unsold inventory value?"
- "Which orders are awaiting shipment, and how long has each waited?"
- "How does this month's sales compare to last month?"
- "What is my feedback rating trend?"
- "Which scheduled listings go live this week?"
- "Which of my watched items are still active?"
Follow-ups work. Ask for the fastest sellers, pick the top category, then ask which unsold items sit in the same category.
Example report: fastest-selling listings
This is the shape of answer you get for the first question. The numbers are illustrative.
Which listings are selling fastest this month?
- 42items soldlast 30 days
- 6.5average days to sellacross sold items
- 11sold in under a week
What to act on: Optics sell the fastest. If unsold inventory holds more of them, those are the listings to feature first.
Source: GunBroker, read-only. Numbers are illustrative.
Pair it with a CorpusIQ skill
The connector answers questions. Skills turn the answers into a routine. The Ecommerce Command Center skill looks at inventory, refunds and product profitability across your connected sources, and Day Close wraps up the day from the sources you have connected.
Setup in 3 minutes
- Sign up at corpusiq.io. Solo $29.95/month, 30-day free trial.
- In the CorpusIQ dashboard, click Connect next to GunBroker and paste a read-only API key.
- Add CorpusIQ to ChatGPT from the dashboard setup page.
Where this earns its keep
Sellers with a steady flow of listings get the most from it. A Monday pull of fastest sellers, unsold value and the shipping queue replaces four screens with one answer, and the feedback trend catches a slipping rating before it costs you sales.
What to watch out for
ChatGPT reports what GunBroker holds, so it is only as current as your listings and order statuses. Unsold inventory value is a sum of asking prices, not a promise of what items will fetch. Feedback trends on a small number of ratings swing easily, so read a single bad week as a prompt to look, not a verdict.
See also
FAQ
Does CorpusIQ store my GunBroker data?
Direct MCP does not retain raw customer files or full connector response payloads. Operational logs may persist for up to 30 days. CorpusIQ does not train models on customer data; the selected AI client's plan and settings govern conversation handling.
Can ChatGPT list items or ship orders on GunBroker?
No. The API key is read-only. ChatGPT can read listings, orders and feedback. It cannot create, edit or relist items, cancel or fulfill orders, or change pricing or inventory.
Which GunBroker data can ChatGPT see?
Selling, sold, unsold and scheduled listings, orders and fulfillment status, inventory and item details, account, billing and feedback summaries, plus categories and watched items.
What plan do I need?
Solo at $29.95/mo includes GunBroker and all 40+ connectors, with a 30-day free trial.