You asked about Art Trading Platforms
20 people built something like it. 4 are gone.
That is 24% of the ones whose fate we could settle, against 23% across the whole register. 3 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCAnakin One API to get clean data from any website for your AI agents at scale · anakin.io | still up |
| 2017-01-01 | Document AI. One API Call. · veryfi.com | still up |
| 2021-01-01 | YCMindee AI Document Understanding API · mindee.com | still up |
| 2014-06-01 | API platform for partners to issue branded debit and credit cards to… · aptopayments.com | acquired |
| 2020-01-01 | The API to get recordings, transcripts, and metadata from meetings · recall.ai | still up |
| 2022-01-01 | YCTheneo Stripe-like API Docs in just a few clicks · theneo.io | still up |
| 2020-06-01 | YCAtomic API that lets companies embed investment accounts into their services · atomicvest.com | still up |
| 2021-01-01 | YCMystic Low latency API to run and deploy ML models · mystic.ai | still up |
| 2023-01-01 | YCLiteLLM Call every LLM API like it's OpenAI [100+ LLMs] · litellm.ai | still up |
| 2022-01-01 | YCSpeechly Natural Language Understanding API for Speech that runs on device · speechly.com | acquired |
| 2023-06-01 | YCSkyvern Open Source AI Agent to automate browser workflows via an API · skyvern.com | still up |
| 2020-01-01 | YCWeav Weav is the universal API for commerce platforms · weav.co | acquired |
| 2018-01-01 | Point stores things you send over and over again and helps you re-use… · pointapi.com | gone |
| 2026-06-01 | YCSpeko OpenRouter for Voice AI: one API, every call on the best speech model · speko.ai | still up |
| 2026-06-01 | YCArchal API sandboxes, built for AI agents · archal.ai | still up |
| 2022-06-01 | YCTypeLess AI messaging API for smarter, faster communication. · apps.apple.com | still up |
| 2025-09-01 | API for parsing multimodal unstructured data · unsiloed.ai | still up |
| 2019-01-01 | Referral program SDK for startups · useavalanche.com | gone |
| 2022-01-01 | YCSendo The best SMS/RCS API for startups · sendo.dev | gone |
| 2020-01-01 | A Global Payouts API for Startups · carbon.money | 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.