Jun and Sean are saving a seat for Lightsage's first designer.

The problem

Coding agents now pick, install and call APIs for developers, and often get stuck.

Lightsage makes Shows software companies how AI coding agents find and use their products.

The people

• JLJun Liang Lee · CEO

  • Studied at NUS Business School in Singapore.
  • Co-founded API-Rex with Sean Er, backed by an NUS venture grant in 2023.

• SESean Er · CTO

  • Finished a computer science degree at NUS in 2026.
  • Took a year off school to run Sampleapp.ai through Alchemist Accelerator in San Francisco.
  • Interned as a software engineer at Constructor.io through NUS Overseas Colleges in Silicon Valley.

So far

Customers include Firecrawl, Reducto, Daytona, Rime and Tinyfish.

$4M seed led by Nexus Venture Partners, with angels from Postman, Salesforce, DocuSign and Apollo (September 2026).

Your seat