> ## Documentation Index
> Fetch the complete documentation index at: https://docs.verdant-ai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Read observations

> Read public demo observations in stable ID order. Native dates and season labels remain distinct; a missing value is null, not zero. Follow nextCursor until null.



## OpenAPI

````yaml /openapi.json get /api/v1/datasets/{id}/observations
openapi: 3.1.0
info:
  title: Verdant Climate Data API
  version: 1.0.0
  description: >-
    Versioned climate data with preserved meaning. Discover → inspect → resolve
    → query. Small published-data queries return values directly, with explicit
    units, spatial support, missingness and provenance. Public demo endpoints
    require no credentials. Paid acquisition is not enabled; consult
    capabilities before planning a workflow.
servers:
  - url: https://api.verdant-ai.com
    description: Production (public demo data; payment test mode)
security: []
tags:
  - name: Discovery
  - name: Queries
  - name: Observations
  - name: Raster
  - name: Service
paths:
  /api/v1/datasets/{id}/observations:
    get:
      tags:
        - Observations
      summary: Read observations
      description: >-
        Read public demo observations in stable ID order. Native dates and
        season labels remain distinct; a missing value is null, not zero. Follow
        nextCursor until null.
      operationId: listObservations
      parameters:
        - name: id
          in: path
          required: true
          description: Immutable dataset version ID returned by the catalog.
          schema:
            type: string
            pattern: ^[a-zA-Z0-9_-]{1,128}$
        - name: limit
          in: query
          description: Maximum records in this page. Response size is also capped at 1 MB.
          schema:
            type: integer
            minimum: 1
            maximum: 1000
            default: 100
        - name: after
          in: query
          description: >-
            Opaque nextCursor from the preceding page. Omit for the first page;
            stop when nextCursor is null.
          schema:
            type: string
            maxLength: 256
      responses:
        '200':
          description: One observation page.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ObservationPage'
        '400':
          description: Invalid query parameters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Unknown, unpublished, or unavailable under public demo access.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '413':
          description: Response exceeds the 1 MB bound; narrow the query.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '503':
          description: Data service unavailable. Retry with exponential backoff.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    ObservationPage:
      type: object
      required:
        - datasetVersion
        - observations
        - nextCursor
      properties:
        datasetVersion:
          type: string
        observations:
          type: array
          items:
            $ref: '#/components/schemas/Observation'
        nextCursor:
          type:
            - string
            - 'null'
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
        issues:
          type: array
          items:
            type: object
            properties:
              code:
                type: string
              path:
                type: array
                items:
                  type:
                    - string
                    - number
              message:
                type: string
            required:
              - code
              - path
              - message
            additionalProperties: {}
      required:
        - error
      additionalProperties: {}
    Observation:
      type: object
      properties:
        id:
          type: string
        dataset_version_id:
          type: string
          pattern: ^[a-zA-Z0-9_-]{1,128}$
        variable:
          type: string
        value:
          type:
            - number
            - 'null'
        unit:
          type: string
        observed_on:
          anyOf:
            - type: string
              format: date
              pattern: >-
                ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))$
            - type: 'null'
        period_label:
          type:
            - string
            - 'null'
        entity_id:
          type: string
        dimensions:
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
        quality_flags:
          type: array
          items: {}
      required:
        - id
        - dataset_version_id
        - variable
        - value
        - unit
        - observed_on
        - period_label
        - entity_id
        - dimensions
        - quality_flags
      additionalProperties: {}

````

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