Playbook · operator how-to
How to find your first investable SaaS hiding on GitHub (solo-founder lens)
A weekend playbook for solo founders and angels — find one investable SaaS hiding on GitHub, qualify it, and decide whether you'd build the same thing or back the team building it.
The frame that makes GitHub useful for solo founders and individual angels is not "find the next unicorn" — it's "find one thing this weekend you'd either build yourself or write a small check into". That decision-framing is a much more honest filter than typical VC sourcing because it forces you to engage with the actual problem space.
This playbook is shaped for an opinionated three-hour Saturday block. The output by Sunday night is a single sheet with one repo, one decision, and one action — usually either "I'm going to build a competing thing in the next 30 days" or "I'm going to email the maintainer and offer to write a $5–25k check or a useful intro".
It works because you're starting from a niche you already understand, which means the qualification work is dramatically faster than for a generalist scout.
Before you start
Prerequisites
- · A niche you genuinely understand (1–2 hours of curiosity, not 'a hot space I read about')
- · A weekend block
- · Honesty about whether you'd build it yourself
Tools
- · GitDealFlow signals feed
- · Your own niche-specific knowledge
- · 30 minutes with the maintainer's prior writing/talks
Steps
- 01
Saturday 10am — name the niche in one sentence
15mWrite your niche in one sentence: 'Tools that help [user] do [job] when [constraint].' If you can't say it cleanly, you don't understand it well enough yet — pick a different one. Examples: 'Tools that help solo SaaS founders ship marketing email when they don't want to learn Mailchimp.' 'Tools that help indie game devs ship Steam analytics when they don't want to build a dashboard.'
- 02
Saturday 10:15 — pull the top 25 in that niche
30mOpen
https://signals.gitdealflow.com/api/v1/signals.json?sector=[closest-sector]&limit=25. If your niche doesn't map cleanly to a sector slug, pick the closest one and scan manually. You're looking for the 5–8 repos whose READMEs are clearly your niche, not just nearby. - 03
Saturday 11am — answer 'Can I build it?' for each
30mFor each of the 5–8, can you build a competing v1 in a weekend? If yes, mark 'buildable'. If no, mark 'too-much-tech'. The buildable column is where most solo-founder leverage lives — competing on shipping speed, not technical complexity.
- 04
Saturday 12pm — answer 'Should I build it?' for each buildable repo
45mEven if you can build it, should you? For each buildable repo, write one sentence on what would change if a slightly better version existed. If the answer is 'nothing material', cross it off. If the answer involves a specific person you know who'd pay, keep it.
- 05
Saturday 1pm — find the maintainer's writing on the problem
45mFor each surviving repo, find one piece of prior writing by the maintainer — a blog post, a talk, a Twitter thread, a podcast appearance. Read it. If they sound like they're going to build the thing whether or not you join, that's a back-them signal. If they sound like they're solving a one-off itch, that's a build-yourself signal.
- 06
Sunday 10am — write the one-page decision
45mOne repo. One decision. One action. Decision = build / back / skip. Action = (build → first commit message you'd write tomorrow morning) / (back → the exact email you'd send the maintainer including the check size or intro you're offering) / (skip → the next niche you'll try next weekend).
Run the play
Grab the free book (build-vs-back examples) →Frequently asked questions
What if my niche isn't represented in the sector slugs?
Pick the closest sector and scan the README of each repo manually. The signal scores are still computed for every public repo we track — the sector slugs are just a fast pre-filter.
Is 'build it yourself' really a valid VC sourcing playbook?
It's not a VC playbook — it's a solo-founder / angel playbook. The point is that the same GitHub signal that says 'this team has momentum' also says 'this problem space has demand', and as a solo founder you can act on either side of that.
What's the average check size that comes out of this playbook?
Anecdotally, $5–25k angel checks in the build-or-back-this-weekend lane. The 'back' decisions go directly into a warm-intro email; the 'build' decisions tend to produce a first commit by Monday morning.