Integuru bets LLMs can reverse-engineer internal APIs; YC W24 launch drew 218 HN points

Integuru is a Y Combinator W24 startup selling integrations with platforms that have no official API. Its open-source agent records a user's browser session, identifies the internal network requests behind an action such as downloading a utility bill, builds a dependency graph between them, and generates runnable Python that calls the platform's own endpoints directly — no browser automation at runtime.

The founders, Richard Zhang and Alan Lu, started as recent graduates trying to make US income-tax documents (W-2s and 1099s) accessible; banks, brokerages and payroll companies ignored their API-access requests, so they built the integrations themselves. Browser automation was unreliable when UIs changed and too slow in production, so they concluded reverse engineering was the only route and, after doing it across dozens of platforms, built an LLM agent to automate it.

Integuru launched on Hacker News on 2024-10-29 with a 218-point and 83-comment thread; the launch version was AGPL-3.0 open source, with revenue from custom integration builds, hosting and authentication management. Commenters debated the legal line and what happens when an unofficial API changes, while the founders described auto-patching plans and use cases where end users own their data; as of the 2026-09-04 crawl the repo describes v0 as the earliest release and points to a newer product at integuru.com.