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AI document tools with a public OpenAPI spec

The INITE Atlas lists 24. By use, the list opens with US Global Mail, Certifier, PostalForm, Jellypod and Invoice Data Extraction.

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

ToolWhere it says so
US Global Mail logoUS Global MailFrom $49/mo26 endpointsdocs.usglobalmail.com/openapi.jsonread Oct 8, 2026
Certifier logoCertifierFree plan · From $49/mo12 endpointscertifier.io/openapi.jsonread Oct 15, 2026
PostalForm logoPostalFormFrom $3 once42 endpointsprojects.postalform.com/openapi.jsonread Oct 14, 2026
Jellypod logoJellypodFree plan · From $25/mo42 endpointsjellypod.com/openapi.jsonread Oct 16, 2026
Invoice Data Extraction logoInvoice Data ExtractionFree plan · From $12 once12 endpointsinvoicedataextraction.com/openapi.jsonread Oct 16, 2026
CapOut logoCapOutFree plan15 endpointsdocs.capout.ai/openapi.jsonread Oct 9, 2026
eformly logoeformlyFree plan33 endpointseformly.app/openapi.jsonread Oct 12, 2026
FreeSign logoFreeSignFree plan25 endpointsfree-sign.com/openapi.jsonread Oct 19, 2026
Aginera logoAgineraFree plan · From $299/user/mo28 endpointsaginera.ai/openapi.jsonread Oct 13, 2026
ClearPolicy logoClearPolicyFrom $29/mo8 endpointsdocs.clearpolicy.app/openapi.jsonread Oct 13, 2026
Exitvo logoExitvoFree plan · From $24/mo8 endpointsexitvo.com/openapi.jsonread Oct 19, 2026
Postedly logoPostedlyFrom $2.99 per use11 endpointspostedly.com/openapi.jsonread Oct 19, 2026
SignSimple logoSignSimplePrice not read3 endpointssignsimple.app/openapi.jsonread Oct 20, 2026
Scopedly logoScopedlyFree plan · From $29/mo8 endpointsscopedly.com/openapi.jsonread Oct 20, 2026
PivotBank logoPivotBankFree plan · From $2.99 once2 endpointspivotbank.app/openapi.jsonread Oct 20, 2026
Graph Paper logoGraph PaperPrice not read1 endpointsgraph-paper.io/openapi.jsonread Oct 20, 2026
SuperDocs logoSuperDocsFree plan · From $20/mo77 endpointsdocs.superdocs.app/openapi.jsonread Oct 14, 2026
easyPDF logoeasyPDFFrom ≈ $7.94/mo356 endpointseasypdf.com.br/openapi.jsonread Oct 22, 2026
Pdfs logoPdfsFree plan · From $19/mo33 endpointspdfs.build/openapi.jsonread Oct 13, 2026
SimplePDF logoSimplePDFFree plan · From $99/mo7 endpointssimplepdf.com/openapi.jsonread Oct 17, 2026
Window Sticker logoWindow StickerPrice not read2 endpointswindowsticker.org/openapi.jsonread Oct 19, 2026
Presio logoPresioPrice not read8 endpointspresio.xyz/openapi.jsonread Oct 19, 2026
NextBid logoNextBidFrom $49.99/mo19 endpointsnextbid.us/openapi.jsonread Oct 21, 2026
Prime Accounting Solutions LLC logoPrime Accounting Solutions LLCFree plan · From $15/mo84 endpointsmailbox.bot/openapi.jsonread Oct 21, 2026

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