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OpenAPI Specification

openapi: 3.2.0
info:
  title: OS Vector Tiles Service Metadata API
  version: v1.0
  x-apievangelist-provenance:
    method: searched
    generated: '2026-07-26'
    assembly: Assembled by the API Evangelist enrichment pipeline from the per-operation OpenAPI 3.0.1 documents Ordnance Survey publishes inline on each docs.os.uk technical-specification page. Paths, parameters, schemas, security schemes and responses are verbatim from those published documents; only the per-page fragments were merged into one document per API.
    sources:
    - https://docs.os.uk/os-apis/accessing-os-apis/os-vector-tile-api/technical-specification/service-metadata.md
    - https://docs.os.uk/os-apis/accessing-os-apis/os-vector-tile-api/technical-specification/stylesheet.md
    - https://docs.os.uk/os-apis/accessing-os-apis/os-vector-tile-api/technical-specification/tile-request.md
  description: Service Metadata for OS Vector Tiles API
servers:
- url: https://api.os.uk/maps/vector/v1
security:
- api-key: []
  api-key-header: []
  oauth2: []
tags:
- name: Service Metadata
  description: Service Metadata for OS Vector Tiles API
paths:
  /vts:
    get:
      tags:
      - Service Metadata
      summary: Service Metadata for OS Vector Tiles API
      operationId: getServiceMetadata
      parameters:
      - name: srs
        in: query
        description: The Spatial Reference System for the service.
        required: false
        schema:
          type: string
          default: '27700'
          enum:
          - '27700'
          - '3857'
      responses:
        '200':
          description: Retrieves Service Metadata for OS Vector Tiles API
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceMetadata'
components:
  schemas:
    TileInfo:
      type: object
      properties:
        rows:
          type: integer
        cols:
          type: integer
        dpi:
          type: integer
        format:
          type: string
        origin:
          type: object
          properties:
            x:
              type: number
            y:
              type: number
        spatialReference:
          $ref: '#/components/schemas/Extent'
        lods:
          type: array
          items:
            $ref: '#/components/schemas/Lod'
    Lod:
      type: object
      properties:
        level:
          type: integer
        resolution:
          type: number
        scale:
          type: number
    Extent:
      type: object
      properties:
        xmin:
          type: number
        ymin:
          type: number
        xmax:
          type: number
        ymax:
          type: number
        spatialReference:
          type: object
          properties:
            wkid:
              type: integer
            latestWkid:
              type: integer
    ServiceMetadata:
      type: object
      properties:
        currentVersion:
          type: number
        name:
          type: string
        capabilities:
          type: string
        type:
          type: string
        defaultStyles:
          type: string
        tiles:
          type: array
          items:
            type: string
        exportTilesAllowed:
          type: boolean
        initialExtent:
          $ref: '#/components/schemas/Extent'
        fullExtent:
          $ref: '#/components/schemas/Extent'
        minScale:
          type: number
        maxScale:
          type: number
        tileInfo:
          $ref: '#/components/schemas/TileInfo'
        maxzoom:
          type: integer
        minLOD:
          type: integer
        maxLOD:
          type: integer
        resourceInfo:
          type: object
          properties:
            styleVersion:
              type: integer
            tileCompression:
              type: string
            cacheInfo:
              type: object
              properties:
                storageInfo:
                  type: object
                  properties:
                    packetSize:
                      type: integer
                    storageFormat:
                      type: string
        serviceItemId:
          type: string
        maxExportTilesCount:
          type: integer
  securitySchemes:
    api-key:
      type: apiKey
      name: key
      in: query