Free and open source · on your servers · live in 14 days

An open source memory layer
 built for venture capital.

fein gives your venture capital team state of the art memory. It connects your inbox, calendar, and CRM, builds the graph of every relationship your venture capital team holds, and answers inside Claude, ChatGPT, and Cursor.

Reads and answers in the tools you already run

Gmail Google Calendar Drive Attio LinkedIn Granola Notion Slack Claude ChatGPT Gemini Cursor Perplexity Copilot
The graph

The memory your team pretends it has.

Every intro, every meeting, every pass your venture capital team has ever made, answered in seconds.

That intro you need? Your team already has it.

Ask for the warmest path to any founder or LP. fein walks who actually emails and meets whom, and names the person best placed to send it.

Walk in briefed. Every meeting.

Attendees, how you know them, and what was left open, assembled from your calendar and inbox before you sit down.

Why did we pass? One question.

When a company comes back for its next round, the meeting, the memo, and the reasons are back in seconds.

Relationships go cold. fein notices first.

It learns each relationship's natural cadence and flags the ones drifting from it, before the news does.

How it knows

Why fein has the answer.

Most AI tools start every chat from zero. fein starts from everything your team has ever done.

Reads everything you already run

Inbox, calendar, Drive, LinkedIn, and your CRM, read continuously. Nobody logs anything.

Builds one graph of it all

Every A. Chen across five tools resolves to one person, every relationship scored by strength and recency.

Answers wherever you ask

One MCP endpoint. Claude, ChatGPT, Gemini, and Cursor all give the same cited answer.

No new app

fein lives in the tools you already use.

Nothing to open, nothing to learn. Ask in plain language, get the answer with the email behind it.

agent · fein over MCP
// your AI, connected to fein
tools: [ fein ]

▸ warmest path to the CEO of Ramp?

fein → 2 hops · via Dana K. (Partner)
      best intro: Dana K. · last spoke 6d ago
      backup:    Marcus L. (3 hops)
      source:    calendar, 14 shared meetings
Security

Your data never leaves your servers.

fein reads your inbox, calendar, and CRM to do its job. It does that inside your walls, in code you can read.

  • Self-hosted, always. It runs on your infrastructure. Nothing is sent to us, ever.
  • Open source, end to end. Every line that touches your data is public. Audit it before it runs.
  • Permissioned and logged. Access is checked per person on every query, and every query is logged. When LPs ask, you show the trail.
Pricing

Every venture capital team needs a data engineer. Now every team can afford one.

A data hire

Brilliant. One pair of hands.

$200,000/ year

Plus equity, recruiting, and six months of ramp.

  • One dashboard at a time
  • The graph lives in their head
  • Leaves, and takes it with them
  • Better things to do than re-auth OAuth tokens
  • Worth it, if you can find one

Clone it yourself

Free. It's open source.

$0forever

The same code we deploy for clients.

  • Your servers, your rules
  • You keep the connectors alive
  • You tune entity resolution
  • You are the on-call
  • We will cheer you on
Ask for the repo

About $17,000 in year one, less than one month of a data hire. Month to month, and if you cancel, everything keeps running.

FAQ

Questions we hear a lot. Short answers here, longer ones on the call.

What exactly is fein?

One graph of every relationship your venture capital team holds, answering inside Claude, ChatGPT, and Cursor over MCP.

How is this different from Affinity or Attio?

A CRM waits for you to update it. fein reads your CRM and everything around it, stays current on its own, and answers where you already work.

What does it cost?

$5,000 once, then $1,000 a month. About $17,000 in year one, no per-seat pricing.

Can't we build this ourselves?

Yes. It's open source, so clone away. The monthly buys the engineer who keeps it alive, so yours can build on top of it instead.

What happens if we cancel?

Nothing stops. It runs on your servers, so the graph, the connectors, and every answer stay yours.

How long does setup take?

Fourteen days, and the date is a commitment. Your part is two short calls; we do everything in between.

Is our data safe?

It never leaves your infrastructure, access is checked per person, and every line of code is open to audit.

What does it connect to?

Gmail, Google Calendar, Drive, LinkedIn, Attio, Affinity, and Granola. Answers land in Claude, ChatGPT, Gemini, and Cursor, and new connectors ship regularly.

Get started

Ready to stop asking around?

The warm intro, the meeting brief, the reason you passed. One question away, in 14 days.

Nearly there!

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