Sentry CEO shares agent-built scraper pattern: generate selectors once, validate, skip LLM at runtime

zeeg · x · 2026-09-04

Sentry CEO David Cramer outlines a scraper architecture that minimizes agent usage: an agent generates a set of selector/typed capabilities at config time; a validator proves the generation works (inputs match outputs); the scraper then runs without the agent, which only occasionally revalidates — e.g. checking the site's content hasn't changed and selectors aren't false-matching. He admits the revalidation step is the weakest part, but says the core loop was easy to build and effective.

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