# What does API3 use?

API3 (api3.org) shows public evidence of 12 tools, according to runsonwhat (last checked 2026-10-28).

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | Custom domain |  |
| [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |
| [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Discord](https://www.runsonwhat.com/reverse/discord) | Support & Docs | Website code |  |
| [Ghost](https://www.runsonwhat.com/reverse/ghost) | Website & CMS | Custom domain |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |

## FAQ

### What tools does API3 use?

As of October 2026, runsonwhat has found 12 tools at API3 (api3.org) in public records. Edge & Hosting: Cloudflare. Application: Google Fonts, Firebase and Astro. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Discord and Ghost. Company Ops: Google Workspace. Last checked October 28, 2026.

### What email provider does API3 use?

API3 uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 406,767 companies runsonwhat tracks.

### What does API3 use for customer support?

API3 uses Discord for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Discord through Discord code on api3.org. Discord is used by 6,320 companies runsonwhat tracks.

### What analytics tools does API3 use?

API3 uses Google Analytics for analytics, alongside Google Tag Manager and Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on api3.org. Google Analytics is used by 898,581 companies runsonwhat tracks.

### What is API3's website built with?

API3 uses Ghost for its website, according to runsonwhat (October 2026). runsonwhat found Ghost through a subdomain that points at Ghost. Ghost is used by 878 companies runsonwhat tracks.

### Does API3 use Google Fonts?

Yes. runsonwhat found Google Fonts at API3 through Google Fonts code on api3.org. Google Fonts is a Media & UI tool used by 820,496 companies runsonwhat tracks.

### Which companies have a tech stack similar to API3's?

The companies with the stacks most like API3's are Comfy Deploy, Addingwell By Didomi, Maev and Swipe Pages, according to runsonwhat (October 2026). Each shares 7 to 8 tools with API3, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what API3 uses?

runsonwhat reads public records only. Of the 12 tools at API3, 7 were found through code on api3.org, 2 through DNS records, 2 through subdomains that point at the vendor and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and api3.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/api3.org (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.