You asked about API
108 people built something like it. 24 are gone.
That is 22% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2021-09-12 | open-meteo.com | still up |
| 2022-01-09 | movieofthenight.com | unverified |
| 2021-09-22 | motion.dev | still up |
| 2022-12-27 | HNDog API dogapi.dog | still up |
| 2021-02-06 | epub.to | still up |
| 2023-02-28 | crul.com | still up |
| 2021-02-06 | libretranslate.com | still up |
| 2021-05-12 | csvbox.io | still up |
| 2022-04-25 | m3o.com | still up |
| 2022-10-10 | stepci.com | still up |
| 2022-11-10 | docs.cdrplatform.com | still up |
| 2021-07-10 | styvio.com | gone |
| 2022-06-07 | unrealspeech.com | still up |
| 2021-06-01 | auxl.io | still up |
| 2023-01-30 | steamship.com | unverified |
| 2023-03-28 | airwalker.io | gone |
| 2022-09-12 | ipdetective.io | still up |
| 2023-08-17 | shadeform.ai | moved |
| 2022-02-03 | tweetfeast.com | unverified |
| 2022-07-15 | eesel.app | still up |
| 2021-01-25 | pdoc.dev | still up |
| 2023-09-25 | crystaldoc.info | still up |
| 2023-09-27 | unrealspeech.com | still up |
| 2023-08-20 | superfunctions.versoly.page | still up |
| 2022-11-04 | pikmaker.com | unverified |
| 2023-11-13 | twogether.ai | moved |
| 2023-10-17 | hacker-news.sideko.dev | still up |
| 2023-11-28 | app.multiple.dev | gone |
| 2023-01-01 | hexmos.com | still up |
| 2023-03-05 | chatgptbay.com | gone |
| 2023-03-08 | searq.org | gone |
| 2023-03-01 | summarize.tech | unverified |
| 2023-10-03 | zany.sh | still up |
| 2023-06-27 | capeprivacy.com | moved |
| 2022-09-12 | libninja.com | still up |
| 2021-05-19 | webm.to | still up |
| 2023-02-03 | leapml.dev | gone |
| 2023-08-29 | gradient.ai | moved |
| 2022-04-08 | columns.ai | still up |
| 2021-05-23 | glitterly.app | unverified |
| 2021-09-20 | oikolab.com | still up |
| 2021-04-02 | zenlogin.co | still up |
| 2023-09-20 | kusho.co | moved |
| 2022-08-07 | doqs.dev | still up |
| 2022-03-01 | aserto.com | still up |
| 2023-03-03 | practiceinterview.co | gone |
| 2023-03-30 | meteosource.com | still up |
| 2022-02-09 | goperigon.com | moved |
| 2023-12-06 | woolapi.com | still up |
| 2022-01-20 | nasa-apod.portaldocs.dev | gone |
| 2021-11-15 | os.cohere.ai | gone |
| 2023-05-04 | placekit.io | still up |
| 2022-12-06 | zuplo.com | still up |
| 2022-04-03 | fusio-project.org | still up |
| 2023-02-14 | openapi.security | gone |
| 2023-03-06 | zuplo.com | still up |
| 2021-10-21 | batsign.me | still up |
| 2023-02-07 | oneapikey.com | gone |
| 2021-10-20 | swell.is | still up |
| 2022-10-05 | docs.greenswapp.com | unverified |
How this compares
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
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.