You asked about API
49 people built something like it. 9 are gone.
That is 21% of the ones whose fate we could settle, against 23% across the whole register. 6 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | Data driven neobank for SMBs in LATAM · kapital.mx | still up |
| 2022-01-01 | YCNumida Working capital for African micro businesses · numida.com | still up |
| 2022-01-01 | Identity Verification API for Emerging Markets · prembly.com | still up |
| 2022-06-01 | YCTailor Headless ERP for retail operations · tailor.tech | still up |
| 2022-01-01 | Unleashing the potential of DNA and RNA based therapies using AI · whitelabgx.com | still up |
| 2022-01-01 | Prevent Fraud and Onboard Users Faster · dojah.io | still up |
| 2022-06-01 | YCAlterya Protecting Humans from Scams · alterya.dev | acquired |
| 2022-06-01 | Healthcare data infrastructure for next generation care delivery. · metriport.com | still up |
| 2022-01-01 | YCTheneo Stripe-like API Docs in just a few clicks · theneo.io | still up |
| 2022-01-01 | Working capital for Brazilian restaurants · pantorepay.com.br | still up |
| 2022-06-01 | YCKombo Unified API for HR, payroll and recruiting software · kombo.dev | still up |
| 2022-01-01 | Healthcare Price Transparency APIs and Data Products · serifhealth.com | still up |
| 2022-06-01 | YCMedplum API first electronic health record (EHR) that is open source · medplum.com | still up |
| 2022-01-01 | Open-Source Postman alternative · requestly.com | acquired |
| 2022-01-01 | Plaid for trading · snaptrade.com | still up |
| 2022-06-01 | YCIntuned Code-first scrapers and RPAs — built and maintained by AI · intunedhq.com | still up |
| 2022-01-01 | YCTendo Enabling Africans to sell online with zero capital · tendo.app | still up |
| 2022-01-01 | Rapid medical data annotation · redbrickai.com | still up |
| 2022-06-01 | YCInvofox Invofox is the document parsing and data extraction API for software… · invofox.com | still up |
| 2022-06-01 | YCTypewise Customer service AI that resolves requests end-to-end. · typewise.app | still up |
| 2022-01-01 | YCWingback Wingback provides tools and APIs for SaaS pricing and packaging. · wingback.com | gone |
| 2022-01-01 | YCPosh Rapidly deployable energy solutions for modern commercial and… · poshenergy.com | still up |
| 2022-01-01 | YCSpeechly Natural Language Understanding API for Speech that runs on device · speechly.com | acquired |
| 2022-01-01 | YCEmobi A single point integration for secure and automated EV charging. · emobi.ai | still up |
| 2022-06-01 | YCAnchor Embedded finance platform for African businesses · getanchor.co | still up |
| 2022-06-01 | The Unified API for Business Financial Data · integrationlabs.co | gone |
| 2022-01-01 | Customer support tool purpose-built for companies that sell APIs · fogbender.com | still up |
| 2022-06-01 | YCSunlight The intelligence and execution layer for agentic B2B card payments. · sunlightapi.com | still up |
| 2022-01-01 | YCDecent Cross-chain routing + trading APIs. One-click transactions with any… · decent.xyz | acquired |
| 2022-01-01 | YCPelm Plaid for utilities · pelm.com | gone |
| 2022-01-01 | Access the start-up asset class with vetted private companies · attack.capital | still up |
| 2022-01-01 | YCVessel Developer-first, native integration platform for GTM tools · vessel.dev | gone |
| 2022-06-01 | YCCapix AI-powered private equity intelligence. · capix.ai | still up |
| 2022-06-01 | Card issuer for Africa · bridgecard.cards | gone |
| 2022-06-01 | API for Retrieval Augmented Generation · superpowered.ai | gone |
| 2022-01-01 | YCNyckel Classify Anything · nyckel.com | still up |
| 2022-06-01 | YCVizzly Customer-Facing Analytics for Modern SaaS. · vizzly.co | acquired |
| 2022-06-01 | YCPayload Developer-First Headless CMS and Application Framework · payloadcms.com | acquired |
| 2022-06-01 | The API to search, scrape, and interact with the web at scale. 🔥 · firecrawl.dev | still up |
| 2022-01-01 | YCValari Embedded finance platform for LatAm. · valari.co | gone |
| 2022-01-01 | API for shared embeddable web browsers · hyperbeam.com | still up |
| 2022-06-01 | YCPoly Intelligent Personal Cloud Storage · poly.app | still up |
| 2022-06-01 | Realtime Data Connectors · movinglake.com | still up |
| 2022-06-01 | YCTypeLess AI messaging API for smarter, faster communication. · apps.apple.com | still up |
| 2022-01-01 | YCAndi AI Search for the Next Generation · andiai.com | still up |
| 2022-06-01 | Enabling Tissue Targeting of Therapies · eugittx.com | still up |
| 2022-01-01 | Open-source API & UI test automation · karatelabs.io | still up |
| 2022-01-01 | YCSendo The best SMS/RCS API for startups · sendo.dev | gone |
| 2022-01-01 | YCKable Usage-based billing for API companies · kable.io | gone |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.