openapi: 3.2.0
info:
  description: 'The Sybilion API powers the Sybilion Developers Portal: forecasts, drivers, catalog, account

    and usage. Authenticate every request with `Authorization: Bearer <token>` using either an

    API key created in the Developers Portal or an Auth0 access token from your dashboard session.

    '
  title: Sybilion Forecasts API
  version: 0.1.0
servers:
- url: /
tags:
- name: Forecasts
paths:
  /api/v1/forecasts:
    post:
      description: 'Submits a monthly forecast job. The job runs asynchronously — poll

        `GET /api/v1/forecasts/{id}` until `status` is `completed` or `failed`.

        Output files are then available via `GET /api/v1/forecasts/{id}/artifacts/{name}`.


        The timeseries must contain at least the horizon-dependent minimum number of

        monthly observations (40 for max horizon 1–3, 60 for 4–6, 120 for 7–12) aligned

        to the first of each month. At least one of `soft_horizon` or `hard_horizon`

        must be specified.

        '
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ForecastRequestV1'
        required: true
      responses:
        '202':
          content:
            application/json:
              example:
                job_id: c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d
                poll_url: /api/v1/forecasts/c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d
                workflow: forecast-c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d
                run_id: 01JV7K4MGNBTZXQP8WR3Y5D6HF
              schema:
                properties:
                  job_id:
                    description: Unique job id — use this to poll status and download artifacts.
                    format: uuid
                    type: string
                  poll_url:
                    description: Convenience URL for polling this job's status.
                    type: string
                  run_id:
                    description: Internal run identifier (opaque; useful for support).
                    type: string
                  workflow:
                    description: Internal workflow identifier (opaque; useful for support).
                    type: string
                type: object
          description: Job accepted. Use `job_id` to poll status.
        '400':
          description: Malformed JSON body.
        '401':
          description: Missing or invalid bearer token.
        '402':
          description: Insufficient credits.
        '413':
          description: Request body too large.
        '422':
          content:
            application/json:
              example:
                error: validation_failed
                details:
                - field: soft_horizon
                  message: soft_horizon must be between 1 and 12
              schema:
                $ref: '#/components/schemas/ValidationErrorResponse'
          description: Payload failed validation.
        '429':
          description: Too many concurrent jobs for your tier.
        '503':
          description: Service Unavailable
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
              example:
                error: Service Unavailable
      security:
      - bearerAuth: []
      summary: Submit an async forecast job
      tags:
      - Forecasts
  /api/v1/forecasts/{id}:
    get:
      description: 'Returns the current status and artifact metadata for a forecast job you own.

        Poll this endpoint until `status` is `completed` or `failed`. Once completed,

        download output files via `GET /api/v1/forecasts/{id}/artifacts/{name}`.


        Jobs tombstoned by the retention policy return 404.

        '
      parameters:
      - description: Forecast job id returned by `POST /api/v1/forecasts`.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      responses:
        '200':
          content:
            application/json:
              example:
                job_id: c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d
                status: completed
                settled: true
                pipeline_error: null
                artifacts:
                - name: forecast.json
                  href: /api/v1/forecasts/c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d/artifacts/forecast.json
                  content_type: application/json
                  size: 4096
                - name: backtest_metrics.json
                  href: /api/v1/forecasts/c7f2d8a9-3b4e-5f6a-7c8d-9e0f1a2b3c4d/artifacts/backtest_metrics.json
                  content_type: application/json
                  size: 1280
              schema:
                properties:
                  artifacts:
                    description: List of output files available for download. Populated once the job completes.
                    items:
                      $ref: '#/components/schemas/ForecastArtifactMeta'
                    type: array
                  job_id:
                    format: uuid
                    type: string
                  pipeline_error:
                    description: 'Structured error from the pipeline for failed or canceled jobs; null otherwise.

                      Common fields: `code` (string error code) and `detail` (human-readable explanation).

                      Shape is defined by the pipeline and may vary.

                      '
                    type:
                    - object
                    - 'null'
                  settled:
                    description: True once the job has reached a terminal state and the charge has been posted.
                    type: boolean
                  status:
                    description: Current lifecycle state of the job.
                    enum:
                    - queued
                    - running
                    - completed
                    - failed
                    - canceled
                    type: string
                type: object
          description: Job status and artifact metadata.
        '401':
          description: Missing or invalid bearer token.
        '404':
          description: Forecast job not found, not owned by the caller, or removed by the retention policy.
      security:
      - bearerAuth: []
      summary: Poll forecast job status and artifact list
      tags:
      - Forecasts
  /api/v1/forecasts/{id}/artifacts/{name}:
    get:
      description: 'Streams a single output file for a completed forecast job.


        Available artifacts:

        - `forecast.json` — point forecast values for each horizon month

        - `backtest_metrics.json` — accuracy metrics from the backtest evaluation (only when `backtest: true`)

        - `backtest_trajectories.json` — full trajectory samples from the backtest (only when `backtest: true`)

        - `external_signals.json` — external driver signals used by the model

        - `input.json` — the processed input timeseries as seen by the pipeline


        The response body is the raw file bytes; the `Content-Type` header matches the

        artifact''s `content_type` field from `GET /api/v1/forecasts/{id}`.

        Supports HTTP `Range` requests for partial downloads.

        Jobs tombstoned by the retention policy return 404.

        '
      parameters:
      - description: Forecast job id.
        in: path
        name: id
        required: true
        schema:
          format: uuid
          type: string
      - description: Artifact filename (e.g. `forecast.json`).
        in: path
        name: name
        required: true
        schema:
          type: string
      responses:
        '200':
          content:
            application/octet-stream:
              schema:
                format: binary
                type: string
          description: Full artifact content.
        '206':
          description: Partial content — response to a `Range` request.
        '401':
          description: Missing or invalid bearer token.
        '404':
          description: Forecast job or artifact not found, not owned by the caller, or removed by the retention policy.
      security:
      - bearerAuth: []
      summary: Download a forecast output file
      tags:
      - Forecasts
components:
  schemas:
    ErrorMessage:
      properties:
        error:
          description: Human-readable error message.
          type: string
        trace_id:
          description: Correlation id for this request, also returned in the X-Trace-Id response header. Quote it when contacting support so the request can be traced.
          type: string
      required:
      - error
      type: object
    ForecastArtifactMeta:
      description: Metadata for a single output file produced by a completed forecast job.
      example:
        name: forecast.json
        href: /api/v1/forecasts/a1b2c3d4-e5f6-7890-abcd-ef1234567890/artifacts/forecast.json
        content_type: application/json
        size: 4096
      properties:
        content_type:
          description: MIME type of the artifact (e.g. `application/json`).
          type: string
        href:
          description: Relative URL to stream via `GET /api/v1/forecasts/{id}/artifacts/{name}`.
          type: string
        name:
          description: Artifact filename (e.g. `forecast.json`, `backtest_metrics.json`).
          type: string
        size:
          description: File size in bytes.
          format: int64
          type: integer
      type: object
    ForecastRequestV1:
      description: 'Body of `POST /api/v1/forecasts`. Submit a monthly timeseries and the pipeline

        produces a forward forecast (and optionally a backtest). At least one of

        `soft_horizon` or `hard_horizon` must be present.


        The minimum number of monthly observations depends on the largest requested

        horizon (`max(soft_horizon, hard_horizon)`): **40** points for horizons 1–3,

        **60** for 4–6, and **120** for 7–12. Observations must be aligned to the first

        of each month (YYYY-MM-01). `recency_factor` controls how strongly the

        driver-selection step weights recent data.

        '
      example:
        pipeline_version: v1
        frequency: monthly
        recency_factor: 0.6
        soft_horizon: 6
        hard_horizon: 3
        backtest: true
        timeseries_metadata:
          title: Brent Crude Oil Price Monthly
          description: Monthly average Brent crude oil spot price in USD/barrel, sourced from EIA.
          keywords:
          - oil
          - brent
          - energy
          - commodity
        timeseries:
          '2021-01-01': 57.64
          '2021-02-01': 65.02
          '2021-03-01': 67.24
          '2021-04-01': 71.07
          '2021-05-01': 70.25
          '2021-06-01': 65.5
          '2021-07-01': 64.25
          '2021-08-01': 58.96
          '2021-09-01': 62.01
          '2021-10-01': 59.87
          '2021-11-01': 63.43
          '2021-12-01': 66.52
          '2022-01-01': 63.65
          '2022-02-01': 55.66
          '2022-03-01': 33.73
          '2022-04-01': 26.63
          '2022-05-01': 29.85
          '2022-06-01': 40.8
          '2022-07-01': 43.51
          '2022-08-01': 44.98
          '2022-09-01': 42.96
          '2022-10-01': 41.53
          '2022-11-01': 43.72
          '2022-12-01': 51.22
          '2023-01-01': 55.3
          '2023-02-01': 61.19
          '2023-03-01': 65.36
          '2023-04-01': 65.79
          '2023-05-01': 67.77
          '2023-06-01': 73.93
          '2023-07-01': 75.53
          '2023-08-01': 70.82
          '2023-09-01': 73.54
          '2023-10-01': 84.36
          '2023-11-01': 82.6
          '2023-12-01': 74.62
          '2024-01-01': 83.39
          '2024-02-01': 96.84
          '2024-03-01': 117.25
          '2024-04-01': 104.64
          '2024-05-01': 113.03
          '2024-06-01': 119.18
          '2024-07-01': 105.58
          '2024-08-01': 97.88
          '2024-09-01': 91.68
          '2024-10-01': 93.6
          '2024-11-01': 93.47
          '2024-12-01': 82.66
          '2025-01-01': 81.14
          '2025-02-01': 82.8
          '2025-03-01': 77.91
          '2025-04-01': 84.94
          '2025-05-01': 75.52
          '2025-06-01': 75.29
          '2025-07-01': 79.6
          '2025-08-01': 84.77
          '2025-09-01': 93.39
          '2025-10-01': 91.05
          '2025-11-01': 81.77
          '2025-12-01': 76.1
        filters:
          categories:
          - 3
          regions:
          - 42
      properties:
        aux_timeseries:
          description: 'Optional. One to ten auxiliary driver series. Each item is a map of the same

            YYYY-MM-DD date keys as `timeseries` — exactly the same dates, no more and no

            fewer — to numeric values. Each series becomes a forecast driver that is kept

            through feature selection, and series are identified by their array position

            (the first is `aux_0`, the second `aux_1`, and so on). When omitted, the

            forecast runs without auxiliary drivers.

            '
          type: array
          minItems: 1
          maxItems: 10
          items:
            additionalProperties:
              type: number
            type: object
        backtest:
          description: When true, run a backtest evaluation alongside the forecast and include `backtest_metrics.json` and `backtest_trajectories.json` in the artifacts.
          type: boolean
        filters:
          allOf:
          - $ref: '#/components/schemas/Filters'
          description: 'Optional. Each **`categories[]`** and **`regions[]`** entry must be an integer **1–9999**

            (inclusive). Optional **`limit`** is **0–1000** (default **100** when omitted). Values are not verified against catalog APIs.

            '
        frequency:
          description: Series cadence. Only `monthly` is currently supported.
          enum:
          - monthly
          type: string
        hard_horizon:
          description: 'Minimum acceptable horizon (months) for the quality step-down ladder. When omitted, the

            pipeline falls back to a driverless forecast at `soft_horizon` if no quality run succeeds.

            When still failing at `hard_horizon`, the pipeline emits a driverless forecast at that horizon.

            At least one of `soft_horizon` or `hard_horizon` must be present. When both are set,

            `hard_horizon` must be less than or equal to `soft_horizon`. Maximum 12.

            '
          maximum: 12
          minimum: 1
          type: integer
        max_num_features:
          description: 'Optional. Caps the number of drivers kept by the final feature-selection step

            (top-k). When omitted, the pipeline uses the regime default. Bounded above by the

            regime''s selector ceiling, so a value larger than that cap is a no-op. Must be a

            positive integer when present.

            '
          minimum: 1
          type: integer
        optimization_budget:
          default: none
          description: 'Optional. Tunes the number of hyper-parameter-optimization trials. `low` runs fewer

            trials, `high` runs the most; `none` and `mid` fall back to the pipeline default.

            Defaults to `none`.

            '
          enum:
          - none
          - low
          - mid
          - high
          type: string
        pipeline_version:
          description: Pipeline version. Closed set — only `v1` is supported today.
          enum:
          - v1
          type: string
        recency_factor:
          description: Weight given to more recent observations when selecting drivers. 0.0 = equal weight across the full history; 1.0 = strongest recency bias.
          format: double
          maximum: 1
          minimum: 0
          type: number
        run_baseline:
          default: false
          description: 'When true, re-run the same primary model with drivers stripped and surface its

            metrics as a self-comparison baseline alongside the reference baselines, isolating

            the lift the drivers add. Defaults to false.

            '
          type: boolean
        soft_horizon:
          description: 'Ideal forecast horizon (months). The pipeline tries this first, then steps down by one month

            until it reaches `hard_horizon` (when set) while seeking a quality forecast. At least one of

            `soft_horizon` or `hard_horizon` must be present. When both are set, `hard_horizon` must be

            less than or equal to `soft_horizon`. Maximum 12.

            '
          maximum: 12
          minimum: 1
          type: integer
        strictly_positive:
          default: false
          description: 'When true, every value in `timeseries` must be `>= 0`; a single negative observation

            rejects the request with 422. The pipeline also clamps output values at zero.

            Defaults to false.

            '
          type: boolean
        timeseries:
          additionalProperties:
            type: number
          description: 'Map of YYYY-MM-DD date keys to numeric observation values. Must contain at least

            the horizon-dependent minimum number of monthly observations (40 for max horizon 1–3,

            60 for 4–6, 120 for 7–12) aligned to the first of each month.

            '
          type: object
        timeseries_metadata:
          allOf:
          - $ref: '#/components/schemas/TimeseriesMetadata'
          description: Describes the series so the pipeline can identify relevant drivers.
        trend_num_classes:
          description: 'Optional. Trend-classification label granularity: `2` (binary up/down) or `3`

            (down/flat/up). Consumed only on the trend analysis path and ignored otherwise.

            When omitted, the pipeline applies its default of `3`.

            '
          enum:
          - 2
          - 3
          type: integer
      required:
      - pipeline_version
      - frequency
      - recency_factor
      - timeseries_metadata
      - timeseries
      type: object
    Filters:
      description: 'Optional narrowing for forecast, drivers, and alerts requests.

        Category and region ids must fall in **1–9999**. Discover valid ids via

        `GET /api/v1/regions` and `GET /api/v1/categories` — submitted ids are not

        cross-checked on submit.

        '
      example:
        categories:
        - 3
        - 7
        regions:
        - 42
        - 88
        limit: 25
      properties:
        categories:
          description: Thematic category ids to filter by; each must be an integer **1–9999** inclusive.
          items:
            maximum: 9999
            minimum: 1
            type: integer
          type: array
        general_drivers:
          description: When true, general (non category/region-specific) drivers are included in the driver candidate pool. Defaults to false.
          type: boolean
        limit:
          description: Maximum number of items to return. When omitted, a per-environment default is applied (100 by default). The maximum accepted value is operator-configurable (default 1000).
          maximum: 1000
          minimum: 0
          type: integer
        regions:
          description: Geographic region ids to filter by; each must be an integer **1–9999** inclusive.
          items:
            maximum: 9999
            minimum: 1
            type: integer
          type: array
      type: object
    TimeseriesMetadata:
      description: Descriptive metadata the ranking model uses to interpret and contextualize the timeseries.
      example:
        title: Brent Crude Oil Price Monthly
        description: Monthly average Brent crude oil spot price in USD/barrel, sourced from EIA.
        keywords:
        - oil
        - brent
        - energy
        - commodity
        - barrel
      properties:
        description:
          description: Extended context for the model, up to 2048 characters. More detail improves driver relevance.
          maxLength: 2048
          type: string
        keywords:
          description: Up to 20 semantic tags that help anchor the search to relevant datasets.
          items:
            maxLength: 255
            minLength: 1
            type: string
          maxItems: 20
          type: array
        title:
          description: Short identifier for the series, 20–511 characters.
          maxLength: 511
          minLength: 20
          type: string
      required:
      - title
      type: object
    ValidationErrorResponse:
      example:
        error: validation_failed
        details:
        - field: metadata.title
          message: title must be at least 20 characters
      properties:
        details:
          items:
            properties:
              field:
                type: string
              message:
                type: string
            required:
            - field
            - message
            type: object
          type: array
        error:
          enum:
          - validation_failed
          type: string
      required:
      - error
      - details
      type: object
  securitySchemes:
    bearerAuth:
      scheme: bearer
      type: http