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Marc-André Bombeck
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Ketones had to live in a custom metric, with the glucose-ketone index typed in by hand beside it, where it drifted from the readings it came from. - Type: BLOOD_KETONES (beta-hydroxybutyrate, mmol/L, migration 0496), plausible from 0 to 10: the blood ketone meters read 0.0 to 8.0 and print HI above it, and a venous value off a lab sheet fits under 10. Zero is a real reading. No band, no direction, no personal record, off the Coach snapshot and the correlations; readable over MCP and owned by the glucose module like glucose. - Entry: choosing blood ketones in the measurement form also takes the glucose from the same fingerstick, in the account's glucose unit. Both rows go through the array arm of POST /api/measurements with one timestamp, so they land in one transaction or not at all. - Index: glucose (mg/dL / 18.0182, the tree's one factor) over ketones, computed at read time and never stored. Each ketone reading above zero pairs with the glucose reading at the same instant, else the nearest one within 15 minutes either side; a tie goes to the same source, then to the earlier reading. Nothing pairs across a wider gap. - Surfaces: GET /api/measurements/series takes kind=ketones and kind=glucoseKetoneIndex (each point names the paired readings), and the day carries glucoseKetoneIndex when both reading types are visible. The new Ketones page charts the readings with the index beneath; the day view shows the index beside the value tiles; the doctor report, its PDF and the clinician share print it in the glucose group when both leaves are chosen, since beside the ketones it gives the glucose back. - FHIR: ketone readings export under LOINC 104816-4 (Beta hydroxybutyrate [Moles/volume] in Blood). The index is left out: it has no LOINC term, and both readings it is built from are in the bundle. - The measurement form's action row moved into its own component to keep the form inside its size budget. OpenAPI regenerated; all ten locales; the import unit table lists the type.
docs/ — internal reference + operator playbooks
The user-facing documentation lives at https://docs.healthlog.dev — that's the canonical surface for self-hosting guides, integration walkthroughs, AI-provider setup, and the doctor-report workflow.
The files in this directory are the internal operator playbooks, audit notes, and machine-readable specs that ship alongside the source:
api/— the OpenAPI 3.1 spec for the native-client subset (iOS DTO codegen target). Seeapi/README.mdfor the preview commands. Also home to the MCP-server contract:api/mcp-capabilities.md(tools, resources, prompts, write model) andapi/mcp-skills.md(building a connector / skill).ops/— operator runbooks: deploy, backup / restore, encryption-key rotation, password reset and account recovery, env checks, TLS pinning, data repair. These are what an operator reaches for during an incident.self-hosting/— operator notes next to the code:getting-started.md(install and updates, the page the boot log points at), the TrueNAS, Unraid and Portainer installs with their catalog templates, Tailscale, the reverse proxy, horizontal scaling (HEALTHLOG_PROCESS_TYPE=web|worker|all), notification channels, the environment module, document sources and reproductive-health data. Includesself-hosting/mcp.md— enabling the off-by-default MCP connector and pointing Claude.ai / ChatGPT / Claude Desktop at it, andself-hosting/sso.md— OIDC SSO login: IdP setup, the identity-pinning security model,OIDC_ONLYconsequences, and the break-glass runbook. Alsoself-hosting/geolite2.md— bringing your own offline GeoLite2 databases viaGEOLITE2_DIRinstead of sending login IPs to a third-party lookup. Andself-hosting/account-sharing.md— letting one account on the instance open another's health record: the three access levels, the eight sections a grant can be narrowed to, managed profiles for somebody with no login and the guardians who look after them, what revocation does and does not undo, and which trust properties of the instance are unchanged by any of it. Andself-hosting/support.md— reporting a problem: error ids, the support info every account can copy, the operator's redacted support report, and finding an error in the admin log.using/— notes on using the app that sit close to the code.using/search.mdcovers the command palette's record search: opening it, what it finds, how matching works, and its limits on very large and shared records.using/cycle-calendar-feed.mdcovers subscribing to the cycle forecast from Google, Apple or Outlook.migration/— migration notes. Currently only v1.3 to v1.4; later releases are covered byCHANGELOG.mdand https://docs.healthlog.dev.integrations/— per-integration reference: Withings, WHOOP, Fitbit, Google Health, Strava, Nightscout, Dawarich and Garmin; the Apple Health, Health Connect, document and data imports; AI providers; and Home Assistant with its blueprint. Oura and Polar are covered on the docs site only.adr/— architecture decision records.security/— threat-model notes.diagrams/— architecture diagrams rendered through docs.healthlog.dev.releases/— release imagery.apple-store-connect-checklist.md— the iOS submission gate.codex-protocol-spec.md— Codex / ChatGPT OAuth protocol reverse-engineering notes.contributing/ui-standards.md— the binding UI standards: card anatomy, spacing, text colour, tokens and which primitive to use where. Read before touching any surface.contributing/benchmarks.md— the large-account benchmark (latency and statements per request) and the statement budgets on the hot routes.contributing/testing.md— which suite a test belongs in, the route test kit, the integration database, sharding, property and mutation tests, and the flaky-test quarantine.ui-guidelines.md— UI / a11y house style; where it disagrees with the UI standards, the standards win.
If you're a self-hoster looking to spin up an instance, start at https://docs.healthlog.dev or jump to the Quick Start in the project README.