Files
HealthLog/docs/api
Marc-André Bombeck 087f3f496b Stop a settings change from reading as a score drop
Changing which pillars count is an act the person performed, not
something that happened to their health. Until now the week-over-week
comparison could not tell the difference: both windows are computed in
one request under whatever recipe is in force right now, so the pillar
sets agree, the subtraction looks legitimate, and the dashboard could
announce "your score dropped 14 points" to someone who had just come
back from the settings page.

The recipe now carries its own dated identity, and the delta guard
compares against it the same way it already compares against the global
method boundary: a recipe that changed between the two windows
suppresses the delta with a new reason, config_changed, and the surfaces
that gate on an unexplained delta stay quiet. The score record stores
the recipe version and its change date on every write, resolved from the
same stored blob the composition came from, so a row can say which
recipe produced it. A new series module reads those versions back, marks
the first day after a change as a break, refuses to join the composite
line across it, and keeps the per-pillar rows running through it: a
pillar is graded against its own reference band and stays comparable
when the average of the pillars does not.

The notice key folds the person's recipe version in beside the method
version, so a change in either raises the existing dismissible notice
once and dismissing one never dismisses the other. An account that never
chose keeps its old key untouched.
2026-07-31 16:17:20 +02:00
..

HealthLog API Spec

openapi.yaml is the canonical OpenAPI 3.1 description for the HealthLog Next.js API. It is the source of truth for the native iOS client's DTO codegen.

The MCP server is documented separately — it is a distinct contract over JSON-RPC, not part of the REST OpenAPI spec:

Preview locally

Open an interactive Redoc preview in your browser:

npx @redocly/cli preview docs/api/openapi.yaml

Generate static HTML for sharing:

npx @redocly/cli build-docs docs/api/openapi.yaml --output docs/api/index.html

Validate

npx @redocly/cli lint docs/api/openapi.yaml

The spec is expected to be lint-clean (errors = 0). Some warnings are intentional:

  • no-server-example.com — http://localhost:3000 is the dev server.
  • operation-2xx-response / operation-4xx-response — webhook + redirect endpoints intentionally omit one or the other.
  • no-unused-components — ReminderPhase is exposed for client codegen even though no path response references it directly.

Layout

  • info — title, version (mirrored from package.json), description.
  • servers — production https://healthlog.bombeck.io plus http://localhost:3000 for local development.
  • tags — domain groupings (Auth, Measurements, Medications, Mood, Dashboard, Insights, Achievements, DoctorReport, Integrations, User, Tokens, Notifications, Onboarding, Health, Settings, Analytics, Export, AuditLog, Monitoring, Webhooks, Ingest, Admin).
  • securitySchemes:
    • bearerAuth — long-lived hlk_* API tokens issued via POST /api/tokens. Required on /api/ingest/medication.
    • sessionCookie — HttpOnly healthlog_session cookie set by the password and passkey login flows. Used by the web app and any iOS client running inside a web view.
  • components.schemas — DTOs for all routes plus the underlying Prisma models (e.g. Measurement, Medication, MedicationIntakeEvent, MoodEntry, User, DashboardLayout, ApiEnvelope, ApiError).
  • paths — all routes from src/app/api/**/route.ts, including the /api/admin/* family which is tagged Admin and marked internal.

Conventions

  • Successful responses use the envelope { data, error: null }.
  • Error responses use the envelope { data: null, error: '<message>' }.
  • Pagination uses limit + offset query parameters and a meta: { total, limit, offset } block on the response.
  • All timestamps are ISO 8601 / RFC 3339 (format: date-time) in UTC.
  • IDs are CUIDs (opaque strings).

Updating the spec

When adding or changing routes:

  1. Update the relevant route handler under src/app/api/**/route.ts.
  2. Mirror the change in openapi.yaml. Keep operationId camelCase and stable — the iOS codegen keys off it.
  3. Run npx @redocly/cli lint docs/api/openapi.yaml and resolve all errors. Warnings are tolerated when documented above.
  4. Bump info.version if the change is breaking for clients.