01 · SEC filings
“Summarize the risk factors in Apple's latest 10-K.”
The section, summarized, with the filing date and a link to the document on EDGAR.
Octagon for ChatGPT
Market research inside ChatGPT. Cited to source.
Ask ChatGPT about a filing, an earnings call, a price series, or a company's financials. The Octagon app pulls the record and answers with the citation. Nothing from training memory.
Summarize the risk factors in Apple's latest 10-K.
Apple's most recent 10-K lists supply concentration, foreign exchange exposure, and regulatory scrutiny of the App Store among its principal risks, each cited to the section of the filing it comes from.
Octagon · SEC filing 8,000+ Public companies covered
10 years Of earnings calls and financials
3 steps To install, no code
What it answers
Three research areas. One app.
The records, the market data, and the questions that span both.
01 · Public companies
Filings, transcripts, financials.
10-K, 10-Q, 8-K, and S-1 filings for 8,000+ public companies. Ten years of earnings call transcripts, financial statements, and ratios. The record itself, with the filing date.
Public market agents
02 · Market data
Prices, estimates, news.
Daily prices and price history for any listed stock. Analyst estimates and consensus. Company news with the date and the outlet. Every series carries its as-of date.
Stock data and estimates
03 · Deep research
One question, many sources, every claim cited.
For questions no single record answers. The deep research agent reads across filings, transcripts, financial data, and the web, then writes a brief with a citation on each claim.
How the agents work
Prompts that work
Ask it like this.
Six prompts, six records. Each one comes back with its source.
02 · Earnings calls
“What guidance did NVIDIA give on last quarter's call?”
The guidance sentences from the transcript, attributed to the speaker, with the call date.
03 · Stock data
“Show AAPL's daily close for the last 30 days.”
The series as a table, with the source and the as-of date.
04 · Financials
“Compare Apple's and Microsoft's revenue growth over the last three fiscal years.”
A side-by-side table by fiscal year, with units and the statements it was built from.
05 · Analyst estimates
“What is the consensus EPS estimate for Microsoft's next fiscal year?”
The consensus figure with the number of estimates behind it and the as-of date.
06 · Deep research
“Compare AWS, Azure, and Google Cloud margins and growth.”
A synthesized brief across filings and web sources, each claim cited.
How to add it
Install takes a minute.
No code, no keys. Sign in once.
- 01
Open the app.
Open in ChatGPT takes you to Octagon in the ChatGPT apps directory. Choose Add.
- 02
Sign in with Octagon.
Continue with Google or email. A free account is created if you don't have one.
- 03
Ask.
Mention Octagon in your prompt, or just ask about a company. ChatGPT calls the app when it needs the record.
Prefer the manual MCP path for Claude, Cursor, or a custom client? Follow the MCP server guide →
Why you can trust the answer
Three promises.
Cited, fetched, and yours to disconnect.
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Every answer cites.
The filing, the transcript, or the data source. You can open it.
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Nothing from memory.
The app fetches the record at the moment you ask. No training-data guesses.
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Your account, your call.
Octagon connects through OAuth. Disconnect it in ChatGPT's settings at any time.
Frequently Asked Questions
What is the Octagon app for ChatGPT?
An app in the ChatGPT apps directory that gives ChatGPT live access to Octagon's market intelligence: SEC filings, earnings call transcripts, financial statements and ratios, stock prices, analyst estimates, and company news. Answers cite their sources.
Is it free?
Adding the app and creating an Octagon account is free. Usage draws on the credits of your Octagon plan. Plans and limits are on the pricing page.
How do I install it?
Open Octagon in the ChatGPT apps directory, choose Add, and sign in with your Octagon account. Three steps, no code.
Does it work on ChatGPT Free, Plus, and Pro?
It works wherever ChatGPT apps are available. Check ChatGPT's own documentation for which plans and regions support apps.
What can I ask it?
Anything about a public company's filings, earnings calls, financial statements, price history, analyst estimates, or news. The prompts above are a starting set.
Does it cover prediction markets?
Prediction-market research is moving to a dedicated Octagon Prediction Markets app built for analysts, covering Kalshi and Polymarket with Trust Scores on every market. Until that listing is live, the main app answers questions about Kalshi and Polymarket markets as well.
Can I use Octagon in Claude, Cursor, or my own app?
Yes. The same server behind the ChatGPT app is available as a remote MCP server and a REST API. See Connected Apps.
Is this investment advice?
No. Octagon provides research and data for your own analysis. It is not investment advice.
