Show HN: Reverse Captcha, prove your agent is AI

Category: other

Tags: captcha, ai, game, web

Score: 3.7/10 (Innovation: 6, Technical: 3, Documentation: 2, Utility: 2)

rcaptcha is a playful web-based challenge where users (or AI agents) solve timed tasks that are easy for language models but tedious for humans, with a scoreboard and certificate. It inverts the concept of CAPTCHA to demonstrate AI capabilities rather than filter bots, but is largely a novelty with minimal technical depth and sparse documentation.

Target audience: AI enthusiasts and developers interested in human-AI interaction

Repository: https://rcaptcha.vaultless.dev

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