Building a Custom Bridge to Access Apple Health Data in Claude Code

Apple's privacy-first design means HealthKit has no public REST API, leaving Claude Code users unable to query their health data through standard MCP connectors. health4.ai solves this by letting users build their own sync layer—an iOS app that pushes HealthKit data to a Postgres database they control, then exposes it through an MCP server that Claude can access. The result: full control over your health data while maintaining privacy.