About VC Deal Flow Signal
VC Deal Flow Signal is an independent data product that tracks startup engineering acceleration using public GitHub data. We surface breakout engineering teams before they appear through traditional deal sourcing channels — warm introductions, press coverage, or database alerts.
Why This Exists
Most investors source deals through their network. The problem is that networks are shared. By the time a startup is making the rounds at demo day or landing in your inbox via a warm intro, it is also in every other investor's inbox.
The investor who arrives first has a structural advantage. Engineering acceleration — the rate of change in a startup's commit velocity — is the earliest publicly available signal of momentum. It precedes product milestones, which precede fundraise decisions, which precede press announcements.
We built VC Deal Flow Signal to turn that raw GitHub data into actionable deal flow intelligence: sector rankings, signal classification, and trend tracking — updated weekly.
What We Track
20
Sectors
88+
Startups
1
Quarters of data
Weekly
Data refresh
Every Monday, our pipeline queries the GitHub API for commit activity, contributor data, and repository metadata across 20startup sectors. We calculate 14-day commit velocity and its rate of change, classify each startup's signal type, and regenerate the ranked sector pages.
The four signal types — engineering hiring burst, infrastructure buildout, deploy frequency spike, and framework migration — each indicate a different phase of startup development. In our data, these patterns have preceded fundraise announcements by six to twelve weeks.
Our Data Principles
Transparency
Our methodology is fully public. We explain exactly how data is sourced, filtered, and ranked — including known limitations. The public API provides machine-readable access to all current data.
Acceleration over absolutes
We measure the rate of change, not raw volume. A startup with 50 commits that doubled from 25 is more interesting than one with 500 commits that stayed flat. This makes the signal comparable across companies of different sizes.
Not investment advice
Engineering acceleration is a leading indicator, not a guarantee. Not all accelerating startups will raise or succeed. We provide timing intelligence — investors must apply their own judgment, sector expertise, and due diligence.
How to Use This Data
For deal sourcing: Browse the sector rankings weekly. When an unfamiliar name appears in the top 3, research them. Cross-reference with Crunchbase for funding history and reach out during the acceleration window (weeks 2-4).
For portfolio monitoring: Track your portfolio companies on the trending page. A sudden drop in commit velocity can indicate team attrition, strategic confusion, or runway pressure — signals that appear before the quarterly board update.
For AI and tools: The JSON API and llms.txt provide machine-readable access for AI agents, dashboards, and custom integrations. Free with attribution.
Contact
Start watching the signals
Browse startup rankings across 20 sectors, or subscribe to the free Signal Digest for weekly highlights.