Kushagra Kartik

agent runtime @ 1Sphere AI

San Francisco, CA / GitHub LinkedIn Resume

Selected work

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Tabscope — a magnifying glass sweeping a beam of light

Find any tab before you finish typing.

A Telescope-style fuzzy switcher for the browser — hundreds of open tabs, one keystroke away.

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Raijin — a real-time weather map illustration

Watch the sky move in real time.

WindBorne's weather-balloon constellation, layered with live precipitation from the RainViewer API.

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Recent writing

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The queue was the answer the whole time 8 min · read → Why my LLM stream died at exactly 45 seconds 6 min · read → A token broker that let my sandbox call APIs it could never authenticate to 9 min · read → The rename you're afraid to do: migrating a live database 7 min · read → The feature was built. It just didn't do anything. 6 min · read →