Show HN: AI Subroutines – Run automation scripts inside your browser tab
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arjunchint
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Hacker News
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Record a browser task once, save it as a callable tool, replay it at: zero token cost, zero LLM inference delay, and zero mistakes.The subroutine itself is a deterministic script composed of discovered network calls hitting the site's backend as well as page interactions like click/type/find.The key architectural decision: the script executes inside the webpage itself, not through a proxy, not in a headless worker, not out of process.
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We score and trim ~300 requests down to ~5 based on method, timing relative to DOM events, and origin.
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Volatile GraphQL operation IDs are detected and...
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