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Karan Shah

Building 60 commercial APIs in 60 days, in public. Shipped so far: Federal Contract Intelligence, Contact Validation (email+phone). All live on RapidAPI.

Work

Founder at NexMath

Telegram has ~1 billion users and no read API — so I built one in a day (Day 5 of 60)

Telegram has ~1 billion users and no read API — so I built one in a day (Day 5 of 60)

Comments
3 min read

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I crammed 11 manufacturing calculators into one API in a day (Day 4 of 60)

I crammed 11 manufacturing calculators into one API in a day (Day 4 of 60)

Comments
2 min read
Your vibe-coded app has no rate limiting. I built the missing backend in one API

Your vibe-coded app has no rate limiting. I built the missing backend in one API

Comments
3 min read
I bundled email + phone validation into one $0 API (because paying for two subscriptions is silly)

I bundled email + phone validation into one $0 API (because paying for two subscriptions is silly)

Comments
2 min read
How to Find Expiring US Federal Contracts Before the RFP Drops (Free API)

How to Find Expiring US Federal Contracts Before the RFP Drops (Free API)

Comments
3 min read
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