Learn to build and use technology inside your fund
80x Docs is the open standard for agentic engineering and frontier
technology in venture capital: free, plain-English documentation for
investors and fund operators. Every page starts from a workflow you
already run (sourcing, screening, meeting notes, pipeline, portfolio
monitoring, LP fundraising), assumes no engineering background, and
comes from a system that actually runs.
Choose your path
Section titled “Choose your path”- “I want my pipeline to stay clean.” Start with pipeline hygiene: every deal has a stage, every stage change has a date, and a scheduled job does the remembering. The one-file cron sync is the smallest build that enforces it.
- “I want screening notes to stop dying in inboxes.” Meeting notes to CRM gets what was said onto the deal record, and the deal-qualification agent reads those notes and files cited screening signals for your team to review. Before the next call, valentine briefs you on your fund’s prior contact with the company.
- “I want sourcing to be more than referrals and luck.” Sourcing and signals argues that your durable edge is the interaction data your fund captures and owns, and WhatsApp to CRM is one capture pipeline you can build.
- “I want portfolio and pipeline numbers I don’t assemble by hand.” The self-updating KPI dashboard generates a fresh page from your CRM every morning, with no server to run and no analyst on the hook.
- “I want one system every tool reads and writes.” The CRM as your fund’s database explains the single-source-of-truth pattern, the CRM migration playbook covers getting there from wherever your data lives now, and the same pipeline patterns run your LP fundraising tracking too.
- “I want to understand the concepts before building.” Start with What is an agent? and work through the reference. Every term is defined in plain English the first time it appears.
- “I’m pointing an AI assistant at this site.” Read Use this site with an LLM. The whole site is built to be pasted into a model.
What’s in the library
Section titled “What’s in the library”| Section | What it gives you |
|---|---|
| Start here | What the site is, why it exists, how to use it |
| Reference | The concepts, defined precisely: agents, tool use, MCP, safety |
| Guides | Step-by-step builds you can follow, from shipped systems |
| VC playbooks | What to run in your fund, in fund terms |
| Projects | Open-source tools you can install today |
| Field notes | Dated essays and measured benchmarks |
| Glossary | Every term on the site, defined in one paragraph |
Why you can trust it
Section titled “Why you can trust it”Every page comes from a system that actually shipped and ran in production for a real fund or company: real schedules, real failure modes, real code. Nothing is invented. Numbers are only quoted when they were measured, and client systems appear anonymized. Where a page documents a tool, the tool is open source and linked, so you (or your engineer, or your AI assistant) can read the implementation behind the explanation.
Everything is free, with no login and no gated tier. If you want these systems built for you instead of building them yourself, there is exactly one paid thing on this site: a call, via the button in the header.