AI writing tools with a public OpenAPI spec
The INITE Atlas lists 11. By use, the list opens with Subscribr, Frase, Eden, WasItAIGenerated and Spook.
An OpenAPI document we fetched and parsed, with the number of endpoints it describes and the address it lives at.
Where each one says so
| Tool | Where it says so | Price | Visits/mo |
|---|---|---|---|
 SubscribrFree plan · From $99/mo | 100 endpointssubscribr.ai/openapi.jsonread Oct 12, 2026 | Free plan · From $99/mo | 23k |
 FraseFree plan · From $39/mo | 150 endpointsfrase.io/openapi.jsonread Oct 15, 2026 | Free plan · From $39/mo | 8.7k |
 EdenFree plan · From $7.50/mo | 4 endpointseden.so/openapi.jsonread Oct 16, 2026 | Free plan · From $7.50/mo | 1.2k |
 WasItAIGeneratedFree plan · From $5 once | 2 endpointswasitaigenerated.com/openapi.jsonread Oct 9, 2026 | Free plan · From $5 once | 789 |
 SpookFrom $60/mo | 59 endpointstryspook.com/openapi.jsonread Oct 18, 2026 | From $60/mo | 111 |
 BamfPrice not read | 138 endpointsbamf.ai/openapi.jsonread Oct 19, 2026 | Price not read | 32 |
 AIStoryHubFree | 24 endpointsaistoryhub.co/openapi.jsonread Oct 13, 2026 | Free | 26 |
 Admit CoachPrice not read | 224 endpointsadmit-coach.com/openapi.jsonread Oct 19, 2026 | Price not read | 25 |
 YouSpotFrom $10/mo | 27 endpointsyouspot.com/openapi.jsonread Oct 14, 2026 | From $10/mo | 2 |
 RankwiseFrom $59/mo | 19 endpointstryrankwise.com/openapi.jsonread Oct 20, 2026 | From $59/mo | 14 |
 PenwrightPrice not read | 7 endpointspenwright.ink/openapi.jsonread Oct 20, 2026 | Price not read | 6 |
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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Before we count this visit
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