Developer Builds Personal AI Running Coach by Feeding It Full Training History

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A software developer found that using ChatGPT with individual workout screenshots was ineffective because isolated data points lack the context needed for meaningful coaching advice. To solve this, he built a personal web portal called running-portal that syncs workout data from Mi Fitness, stores historical runs, and automatically assembles structured prompts for an AI model after each session. The portal feeds the AI a formatted context block containing the current run's metrics alongside recent workout history, enabling trend-based analysis rather than one-off observations. The project relies on an open-source sync module, Mi-Fitness-Sync, which handles Xiaomi's private API and data parsing. Because the integration depends on undocumented internal APIs, the developer treats the tool as a personal utility rather than a publicly deployable service.

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ProgrammingDEV Community ·

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