You asked about API
75 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2023-02-01 | trigger.dev | still up |
| 2023-01-25 | automatisch.io | still up |
| 2023-02-28 | crul.com | still up |
| 2023-02-10 | mrscraper.com | still up |
| 2023-02-07 | nango.dev | still up |
| 2023-03-09 | apirank.dev | still up |
| 2023-02-28 | briefsky.app | still up |
| 2023-05-16 | capillaries.io | still up |
| 2023-04-16 | typeapi.org | still up |
| 2023-07-03 | ray.run | still up |
| 2023-08-14 | chatwith.tools | still up |
| 2023-09-27 | unrealspeech.com | still up |
| 2023-09-25 | crystaldoc.info | still up |
| 2023-08-20 | superfunctions.versoly.page | still up |
| 2023-06-01 | Helping businesses in emerging markets make pay their international… · capimoney.com | still up |
| 2023-10-17 | hacker-news.sideko.dev | still up |
| 2023-01-01 | hexmos.com | still up |
| 2023-10-03 | zany.sh | still up |
| 2023-01-01 | YCEscape Offensive security for the teams that are 100x outnumbered · escape.tech | still up |
| 2023-01-19 | databar.ai | still up |
| 2023-03-30 | meteosource.com | still up |
| 2023-12-06 | woolapi.com | still up |
| 2023-06-01 | YCTerminal Plaid for Telematics Data in Commercial Trucking · withterminal.com | still up |
| 2023-01-01 | YCMetal The AI context platform for private capital. Everything your firm… · metal.ai | still up |
| 2023-05-04 | placekit.io | still up |
| 2023-09-14 | eesel.ai | still up |
| 2023-03-06 | zuplo.com | still up |
| 2023-04-30 | grgv.xyz | still up |
| 2023-09-27 | booper.dev | still up |
| 2023-05-31 | brave.com | still up |
| 2023-03-27 | alerty.dev | still up |
| 2023-08-30 | pyas.io | still up |
| 2023-02-21 | docs.getmagistrate.com | still up |
| 2023-01-18 | apyhub.com | still up |
| 2023-09-19 | pdfhippo.com | still up |
| 2023-10-12 | markdowndb.com | still up |
| 2023-01-01 | YCScanbase The API for Diagnostic Test Analysis (COVID-19, FLU, RSV, STD,… · scanbase.com | still up |
| 2023-06-01 | YCSkyvern Open Source AI Agent to automate browser workflows via an API · skyvern.com | still up |
| 2023-01-01 | YCLiteLLM Call every LLM API like it's OpenAI [100+ LLMs] · litellm.ai | still up |
| 2023-07-01 | rings.social | still up |
| 2023-05-11 | selecta.ciaran.co.za | still up |
| 2023-07-05 | vulcansql.com | still up |
| 2023-06-01 | AI-powered insurance verification to boost patient conversion. · soharhealth.com | still up |
| 2023-03-07 | docs.brandfetch.com | still up |
| 2023-06-01 | YCFiber AI The freshest data APIs for AI sales, recruiting, & growth products · fiber.ai | still up |
| 2023-02-08 | schappi.com | still up |
| 2023-10-17 | singleapi.co | still up |
| 2023-03-20 | micro.dev | still up |
| 2023-01-01 | YCFastgen Webflow for the Backend · fastgen.com | still up |
| 2023-01-01 | YCNango A single API for all your integrations · nango.dev | still up |
| 2023-12-13 | echovalue.dev | still up |
| 2023-03-30 | stigg.io | still up |
| 2023-11-14 | alignapi.com | still up |
| 2023-04-13 | musicapi.com | still up |
| 2023-01-01 | YCPropexo Plaid for Commercial Real Estate · propexo.com | still up |
| 2023-07-22 | uniqr.us | still up |
| 2023-12-26 | aisbreaker.org | still up |
| 2023-01-01 | Unifying how the optical industry does business. · speccheckrx.com | still up |
| 2023-10-12 | laketool.ai | still up |
| 2023-01-23 | jqapi.com | still up |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
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.