For Microsoft-first companies, OneDrive is the filing cabinet. Proposals, contracts, policies, financial models, board decks. Finding anything specific requires remembering which folder someone used five months ago. Search helps, but only if you know the right terms.
Connecting OneDrive to ChatGPT through CorpusIQ turns OneDrive into a queryable knowledge source. Ask what the 2025 budget assumed for payroll, find the latest version of a contract, summarize a deck you only vaguely remember.
The problem with the current workflow
OneDrive search returns files, not answers. You still open each one. For operators who are on three other apps during the day, that tab-switching is the real cost.
Company knowledge decays fast when nobody can find it. The doc that explains why you chose a specific vendor, the analysis that justified the pricing change, the strategy memo from the last offsite. All of it exists. Almost none of it gets referenced because surfacing it is work.
How CorpusIQ solves it
CorpusIQ connects OneDrive to ChatGPT through MCP. ChatGPT can search files by content, read Word and Excel and PowerPoint, and extract from PDFs.
Read-only scope. ChatGPT cannot create, modify, or delete.
Live queries. Every request hits Microsoft Graph directly.
Revocable. Remove from Microsoft 365 app permissions.
What you can actually do
- "Find the 2025 budget spreadsheet and tell me what it assumed for payroll growth."
- "Search OneDrive for any document referencing our data retention policy."
- "Summarize the last three board decks into a one-page brief."
- "Find all contracts with vendors expiring in the next 90 days."
- "Search for files containing our pricing model from the last year."
- "Which documents discuss the acquisition of Acme?"
- "Find Excel files with customer churn analysis and summarize the findings."
- "List all files modified in the last 30 days containing the word 'confidential.'"
Follow-ups drill in. Ask for the budget, ask how payroll grew over time, ask what the assumptions were.
Setup in 3 minutes
- Sign up at corpusiq.io. Solo $29.95/month, includes OneDrive plus 37+ connectors.
- Click Connect next to Microsoft. Approve read access via Microsoft OAuth.
- Add CorpusIQ to ChatGPT.
Where this earns its keep
Microsoft-first enterprises, professional services firms, and any company where OneDrive is the de facto knowledge base benefit most. If the answer to "where is that document" takes more than 30 seconds, Claude or ChatGPT plus CorpusIQ is the fix.
What to watch out for
Scanned PDFs without OCR are invisible to content search. Tenant-level admin policies may restrict third-party app installation; check with IT first in regulated environments.
See also
FAQ
Does CorpusIQ store my OneDrive files?
No. Read-only OAuth, zero storage.
Does it work with SharePoint?
OneDrive personal storage is directly supported. SharePoint access depends on how your tenant exposes documents through Microsoft Graph.
Can ChatGPT modify files?
No. Read-only. Every write action stays with the user.
What file types?
Word, Excel, PowerPoint, PDFs, and standard text formats.