Files
HealthLog/docs/api
Marc-André Bombeck 883fd2d047 docs(api): publish the account-access block and the selector header
Three additions to the contract, all of them things a native client cannot
work out on its own.

`GET /api/auth/me` enters the spec for the first time, and enters it loose:
`accountAccess` is specified in full, the remaining preference fields are
declared open rather than half-enumerated. The endpoint has never been in this
document and its payload carries thirty-odd keys no contract has ever named;
specifying a subset and closing the object would publish something the server
does not keep.

`X-HealthLog-Account` is published as a reusable parameter with no route
referencing it, which is the honest state of the contract — the routes that
read another account's record arrive with the surface migration and will
reference it as they land. The header is live in the resolver today, and a
client needs the description before it can be built against a tagged spec: the
value comes from `accountAccess.accounts`, it is a selector and never a
permission, and it must never ride the sync engine, device registration, or an
auth call.

`GET /api/account/activity` carries `retentionDays` in the response and says
why: the window is operator-configurable, so a client that assumed 365 would
tell somebody their record was never opened when the honest answer is "further
back than this reaches".

The parameter is defined in the sharing route module rather than the shared
components block, so the boundary guard keeps holding the header's name to two
files — the resolver that reads it, and the one place that publishes it.
2026-08-02 14:50:05 +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.