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What is Lexfi?
Lexfi is the AI research operating system for markets. It continuously reads earnings calls, filings, news, and macro communications, then turns what changed into explainable signals you can query in ChatGPT, Claude, or our API.
Is Lexfi a new chat app?
No. You keep ChatGPT, Claude, or Gemini. Lexfi is a remote MCP connector: sign in once, approve access, and the assistant retrieves structured market context in the same thread. There is no second research terminal to learn.
How does Lexfi work?
Three steps, no new workflow. Lexfi monitors transcripts, filings, news, and macro releases as they publish. Narrative models separate signal from boilerplate. Explainable outputs then arrive where you already work: MCP in chat, OpenBB, or the REST API.
How is this different from ChatGPT or Claude alone?
An AI model alone cannot read live data or interpret the language that actually moved the name. Lexfi puts evidence in the room: what changed, the source passage, and how similar events traded. Fluency is not a decision.
Is this financial advice?
No. Lexfi does not execute trades, custody assets, or issue personalized investment advice. Trading involves risk of loss. Answers remain the model’s, now optionally grounded in retrieved data. Always check primary sources for legal, tax, and trading decisions.
Who is Lexfi for?
Researchers, operators, families, and desks that already work in an AI client and need live market context without writing code. Funds that want the same intelligence in OpenBB or HTTP can use the API. One provider, one connection: financial data built for AI.
What signal families does Lexfi offer?
Seven families sit behind the product: Macro & Currency Alpha, Earnings Intelligence, Central-Bank Insights, News Intelligence, Insider Equity Signals, Social & Prediction Markets, and Claude & AI plugins. They are documented on lexfi.ai and delivered in chat, OpenBB, MCP, and the API.
Are the scores a black box?
No. Each narrative shift links to the language that triggered it, comparable past events, and what happened to the stock afterward. Qualitative text becomes quantified, auditable inputs. Every score is meant to trace back to source text.
What does Earnings Intelligence include?
Lexfi scores earnings calls and related communications so you read the passages that changed, not the whole transcript. Company transcripts and central-bank transcripts are Pro Max on this site. Primary filings still live on EDGAR and issuer IR pages.
What market coverage can I ask about in chat?
Sixteen data families: stocks, crypto, macro, insider and congress trading, social sentiment, prediction markets, filings, institutional holdings, superinvestors, ETFs, on-chain whale insights, news intelligence, quantitative models, company transcripts, and central bank transcripts. News intelligence, models, and transcripts are Pro Max only.
Does Lexfi work with OpenBB?
Yes. Explainable signals are built to arrive where research already runs: Claude and other assistants through MCP, OpenBB, or the REST API. The consumer connector on this site is the ChatGPT and Claude path; the research platform and marketplace listings live on lexfi.ai.
What are strategy holdings?
Lexfi has +35 strategies on our web platform. Portfolio weights and concentration can sit in the same answer as prices and risk flags. They are not included on Trial or Pro.
What is Argentina Markets?
Local Argentina coverage you can ask about in chat: Merval stocks, CEDEARs, bonds, FX (official and parallel), BCRA, inflation, rates, sovereign debt, negotiable obligations, breakevens, funds, and derivatives. It is additional local-market data, not a fourth pricing column. Designed for argentine investors and analysts.
What is MCP and why does Lexfi use it?
The Model Context Protocol is an open standard for connecting AI assistants to external tools. Lexfi’s remote MCP server lets ChatGPT, Claude, and Gemini retrieve structured market context during a conversation, instead of switching to a separate terminal.
How do I connect Lexfi to ChatGPT?
Enable Developer mode (Settings → Apps/Connectors → Advanced). Add a connector with https://api.lexfi.ai/mcp, choose OAuth, then finish Lexfi browser sign-in. Back in chat, enable the connector and run a short test. No API key is required for MCP.
How do I connect Lexfi to Claude?
In Claude, open MCP connectors, add a remote server, and paste https://api.lexfi.ai/mcp. Complete browser sign-in and consent. Return to Claude and ask about companies, portfolios, or macro risk in the same chat.
Can I connect Lexfi to Gemini?
Yes, if your Gemini client supports remote MCP with OAuth 2.0 Authorization Code + PKCE. Add https://api.lexfi.ai/mcp, finish browser sign-in, then run a short test request. SSE-only clients are not supported.
Do I need an API key or coding experience?
No. MCP uses OAuth in the browser. You never share your password with the assistant. API keys are only for custom HTTP integrations against https://api.lexfi.ai.
What is the MCP server URL?
Use https://api.lexfi.ai/mcp exactly — no extra path. The client must support MCP Streamable HTTP with OAuth 2.0 PKCE. Mixing use.lexfi.ai, the docs site, and the MCP URL in the connector field is the most common setup failure.
The connector is not showing up. What should I try?
In ChatGPT, Developer mode must stay on. Finish login and consent in the browser tab if you see unauthorized. If tools are missing, confirm the account and plan, then disconnect and reconnect after a plan change. Rate limits reset with the window, or upgrade for higher allowances.
What is included in the 7-day free trial?
The one-time trial lasts 7 days: MCP, API, 50 MCP calls, and 100 API requests per hour. Strategy holdings are not included. A card is required; you are not charged during the trial. After 7 days it becomes Pro at $20/month unless you cancel.
What is the difference between Pro and Pro Max?
Pro Max includes all of our data coverage, including Lexfi's proprietary quant models and Central Bank + Company transcripts. Also, you will have access to strategy holdings, and a higher call rate limit.
Can I skip the trial and subscribe immediately?
Yes. Choose Pro or Pro Max on monthly or annual billing from the pricing page. Unauthenticated users are sent to sign-up first.
How does annual billing work?
If you subscribe to an annual plan, you will be saving 2 months worth of monthly billing, saving you roughly 16% on the annual plan.
Can I start the trial more than once?
No. The trial is one-time. If you have already used it, subscribe to Pro or Pro Max instead.
How do I cancel or manage billing?
Signed-in users open invoices, plan changes, and cancellation in the Stripe portal from Account → Billing. Cancel before the trial ends if you do not want it to convert to Pro at $20/month.
When should I use the REST API instead of MCP?
Use MCP when you want ChatGPT or Claude to fetch context in chat. Use https://api.lexfi.ai when you are building a notebook, or agent and need documented GET endpoints.
How do I authenticate API requests?
Create a key from the Lexfi account menu (profile → Manage account → API key). Send it as an apiKey query parameter or an x-api-key header. Keys often start with lk_live_. Routes are read-only JSON; dates use YYYY-MM-DD.
What are the API rate limits?
Free / standard keys allow 6 requests per hour. Trial and Pro allow 100 per hour. Pro Max allows 300. Over-limit requests may return HTTP 429.
What should I do after changing plans?
Disconnect Lexfi in the client and add the MCP server again. Upgrades do not always refresh tools, data families, and call limits until you reconnect.
Where can I see my usage?
Sign in and open the dashboard for MCP usage and plan state (trial, Pro, Pro Max). Invoices and the Stripe portal live under Account → Billing.
How do I get help?
Setup is on the install guide. Billing is in-app. For partnerships, press, or a research audit, use Contact, LinkedIn, or schedule a call. If a question is missing here, tell us and we will add it.