> ## 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 one raster cell

> Return one native cell and its spatial metadata. A null value means missing, and its unit and evidence class do not change.



## OpenAPI

````yaml /openapi.json get /api/v1/layers/{id}/sample
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/layers/{id}/sample:
    get:
      tags:
        - Raster
      summary: Read one raster cell
      description: >-
        Return one native cell and its spatial metadata. A null value means
        missing, and its unit and evidence class do not change.
      operationId: sampleRaster
      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: tile
          in: query
          required: true
          schema:
            type: string
          description: Tile ID from the layer index.
        - name: row
          in: query
          required: true
          schema:
            type: integer
            minimum: 0
          description: Zero-based index within this tile.
        - name: col
          in: query
          required: true
          schema:
            type: integer
            minimum: 0
          description: Zero-based index within this tile.
      responses:
        '200':
          description: One native raster cell.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PixelSample'
        '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:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    PixelSample:
      type: object
      properties:
        datasetVersion:
          type: string
        tile:
          type: string
        row:
          type: integer
          minimum: -9007199254740991
          maximum: 9007199254740991
        col:
          type: integer
          minimum: -9007199254740991
          maximum: 9007199254740991
        value:
          type:
            - number
            - 'null'
        unit:
          type: string
        variable:
          type: string
        date:
          type: string
          format: date
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))$
        crs:
          type: string
        transform:
          type: array
          prefixItems:
            - type: number
            - type: number
            - type: number
            - type: number
            - type: number
            - type: number
          items: false
          minItems: 6
          maxItems: 6
      required:
        - datasetVersion
        - tile
        - row
        - col
        - value
        - unit
        - variable
        - date
        - crs
        - transform
      additionalProperties: false
    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: {}

````

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