Umami Analytics Authentication Website Statistics API Overlay

overlay: 1.0.0
info:
  title: Umami Analytics Authentication Website Statistics API Overlay
  version: 1.0.0
x-provenance:
  generated: '2026-08-13'
  method: generated
  source: openapi/umami-website-statistics-api-openapi.yml
  note: >-
    API Evangelist enhancements for the Umami Website Statistics surface. This overlay is
    additive and never mutates openapi/umami-website-statistics-api-openapi.yml; apply it to produce the
    enriched document. Every statement below is sourced from Umami's own
    published documentation (docs.umami.is) or from a live probe of
    https://api.umami.is/v1 recorded on 2026-08-13.
extends: openapi/umami-website-statistics-api-openapi.yml
actions:
  - target: $.info
    update:
      x-api-evangelist:
        enrichment-date: '2026-08-13'
        docs: https://docs.umami.is/docs/api
        changelog: https://docs.umami.is/docs/cloud/changelog
        status-page: https://umami.statuspage.io
        base-url-warning: "servers[] in the underlying document composes correctly for the SELF-HOSTED deployment\
          \ (http://<instance>/api/...) and INCORRECTLY for Umami Cloud. The documented Cloud base is https://api.umami.is/v1\
          \ with NO /api path prefix \u2014 https://api.umami.is/v1/websites, not https://api.umami.is/api/websites.\
          \ Source: https://docs.umami.is/docs/cloud/api-key"
        plan-gate: API access begins at the Pro plan ($20/month). The free Hobby plan has no API access.
        rate-limit: 50 calls per 15 seconds per Umami Cloud API key, flat across all plans. No rate-limit
          response headers are returned.
        idempotency: None. Umami documents no idempotency key on any endpoint.
        error-envelope: "{\"error\":{\"message\":<string>,\"code\":<slug>,\"status\":<int>}} \u2014 application/json,\
          \ not RFC 9457."
        deprecation-policy: None published. Breaking renames land on the live /v1 surface on the day they
          ship; no Sunset or Deprecation header is sent.
  - target: $.servers
    update:
    - url: https://api.umami.is/v1
      description: Umami Cloud (documented base; resource paths have NO /api prefix on this host)
      x-note: Added by overlay from https://docs.umami.is/docs/cloud/api-key. Paths in this document carry
        the self-hosted /api prefix and must have it stripped when targeting this server.
    - url: https://api.umami.is/v1/us
      description: Umami Cloud, US region pinned
    - url: https://api.umami.is/v1/eu
      description: Umami Cloud, EU region pinned
    - url: https://{instance}/api
      description: Self-hosted Umami instance
      variables:
        instance:
          default: localhost:3000
          description: Host and port of your self-hosted Umami instance
  - target: $.paths.*.*.responses['400']
    description: Document the observed 400 envelope (missing credential is 400, not 401).
    update:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/UmamiError'
          examples:
            noApiKey:
              summary: No credential supplied (probed 2026-08-13)
              value:
                error:
                  message: No API key specified.
                  code: bad-request
                  status: 400
  - target: $.paths.*.*.responses['401']
    description: Document the observed 401 envelope.
    update:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/UmamiError'
          examples:
            invalidApiKey:
              summary: Credential present but rejected (probed 2026-08-13)
              value:
                error:
                  message: Invalid API key.
                  code: unauthorized
                  status: 401
  - target: $.components.schemas
    description: Add the Umami error envelope schema referenced above.
    update:
      UmamiError:
        type: object
        description: "Umami error envelope. Not RFC 9457 \u2014 no type, title or instance member."
        properties:
          error:
            type: object
            properties:
              message:
                type: string
                description: Human-readable message. Not stable; do not branch on it.
              code:
                type: string
                description: 'Machine-stable slug. Observed values: bad-request, unauthorized.'
              status:
                type: integer
                description: HTTP status, duplicated from the response line.
            required:
            - message
            - code
            - status
        required:
        - error
  - target: $.components.securitySchemes
    description: Separate the two credentials Umami actually issues; the base document conflates them into
      one bearerAuth.
    update:
      cloudApiKey:
        type: http
        scheme: bearer
        description: 'Umami Cloud API key created in the dashboard (Settings -> API keys). Sent as Authorization:
          Bearer <api-key> against https://api.umami.is/v1. Barred from /me/password, /users and /users/*.
          Requires the Pro plan or above.'
      selfHostedJwt:
        type: http
        scheme: bearer
        bearerFormat: JWT
        description: JWT obtained from POST /api/auth/login on a self-hosted instance. Does not work against
          Umami Cloud.