● Developer Tools#1124 BY REVENUE
S
sellapis.xyz
RO· Sep 2025· via stripe
$3K
Revenue · 30d
$12K
GMV lifetime
$31K
Est. ARR
—Revenue trend
$2.6K
tracking started Jul 2026 · check back as more weekly snapshots come in
https://sellapis.xyz/b/get-started
✓REVENUE VERIFIED
—Top ranked
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About sellapis.xyz
I offer a course on creating and selling APIs.
VibeCrowd AI
Investment companion
Niche course business in Developer Tools bringing in $2,552 last month with +36% month-over-month growth.
This is a revenue-stage, course-based startup focused on teaching how to create and sell APIs. Having paying customers and the recorded short-term revenue and growth suggests product-market fit in a narrow, developer-focused niche and that the offer converts at least enough to generate meaningful revenue quickly. The digital course model and developer tooling focus give the business high leverage: once the content is built, incremental sales scale without equivalent increases in delivery cost.
— Strengths
Has paying customers and generated $2,552 in the last 30 days.
Strong short-term momentum with +36% growth over the last 30 days.
Tight, practical niche (creating and selling APIs) that maps directly to developer and indie-maker needs.
Course product is inherently scalable — one product that can reach many buyers without proportional cost increases.
— What to watch
Recurring revenue profile is unclear (MRR unknown), so sustainability of sales and retention is an open question.
Profitability is unknown (profit margin not provided); unit economics and cash flow need verification.
Marketing and demand channels are unknown (monthly visitors unknown), so future growth could depend on paid acquisition or new channels.
Revenue currently comes from a single product type (a course); consider diversification (workshops, consulting, membership) to reduce concentration risk.
◆ Best suited for
›Developers and indie founders who want a tactical playbook for building and monetizing APIs
›Solo creators and dev-entrepreneurs looking for a course-based, self-serve education product
›Developer educators or small teams that could white-label or augment the course with coaching or workshops
A judgment from project data — not a user review.
Generated by VibeCrowd AI from on-platform data·not financial advice·Jul 2026
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