Founder of a listed tool

Denn Ukolov

Co-founder, OpenWeather, named behind the OpenWeather One Call API listing on Anchor Terminal.

Co-founder, OpenWeather

No about written yet. If this is you, you can send us one, with a photo if you like, at the address below.

What Denn builds

OpenWeather One Call API C · Weather & climate data
Current weather, minute, hourly and daily forecasts, government alerts and history back to 1979 in one call, billed per call with 1,000 free a day.
Co-founder, OpenWeather, researched 28 October 2026 · the people behind it

Works with

Olga Ukolova Co-founder, OpenWeather

Questions

Who is Denn Ukolov?

Denn Ukolov is co-founder of OpenWeather.

What does OpenWeather make?

Anchor Terminal lists OpenWeather One Call API from OpenWeather. Current weather, minute, hourly and daily forecasts, government alerts and history back to 1979 in one call, billed per call with 1,000 free a day.

How are Denn's tools graded?

OpenWeather One Call API is graded C, 57.4 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

Sources (3)

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.