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OpenAPI Specification

openapi: 3.2.0
info:
  title: GISGP Free GIS Convert API
  version: 0.1.0
  description: Curated public spec for GISGP's free REST endpoints (format conversion, GeoJSON validation, ArcGIS FeatureServer inspection). For the full agent toolset use the MCP server at https://gisgp.com/mcp — docs at https://gisgp.com/api. Fair-use limits apply; uploads max 4.5 MB (request size limit).
servers:
- url: https://gisgp.com
tags:
- name: Convert
paths:
  /convert/geojson-validate:
    post:
      summary: Validate a GeoJSON file
      description: RFC 7946 structure check, topology validation via shapely (self-intersections, degenerate shapes) and WGS84 coordinate range sanity. Max 4.5 MB.
      operationId: validateGeojson
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - file
              properties:
                file:
                  type: string
                  format: binary
                  description: .geojson or .json file
      responses:
        '200':
          description: Validation report
          content:
            application/json:
              schema:
                type: object
                properties:
                  valid:
                    type: boolean
                  errors:
                    type: array
                    items:
                      type: object
                  warnings:
                    type: array
                    items:
                      type: object
                  stats:
                    type: object
      tags:
      - Convert
  /convert/shapefile-to-geojson:
    post:
      summary: Convert a Shapefile ZIP to GeoJSON
      description: Upload a .zip containing .shp/.dbf/.shx (optionally .prj — reprojected to WGS84). Returns a GeoJSON FeatureCollection file. Max 4.5 MB.
      operationId: shapefileToGeojson
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - file
              properties:
                file:
                  type: string
                  format: binary
                  description: Shapefile bundle as .zip
      responses:
        '200':
          description: GeoJSON FeatureCollection (attachment)
          content:
            application/geo+json: {}
      tags:
      - Convert
  /convert/csv-to-geojson:
    post:
      summary: Convert a CSV with coordinate columns to GeoJSON
      description: Auto-detects lat/lon columns (also handles EU decimal comma). Returns a GeoJSON FeatureCollection file. Max 4.5 MB.
      operationId: csvToGeojson
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - file
              properties:
                file:
                  type: string
                  format: binary
                  description: .csv file with coordinate columns
      responses:
        '200':
          description: GeoJSON FeatureCollection (attachment)
          content:
            application/geo+json: {}
      tags:
      - Convert
  /convert/geojson-to-csv:
    post:
      summary: Convert GeoJSON to CSV
      description: 'Flattens a FeatureCollection to CSV: one row per feature, properties as columns plus a geometry column. Max 4.5 MB.'
      operationId: geojsonToCsv
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - file
              properties:
                file:
                  type: string
                  format: binary
                  description: .geojson or .json file
      responses:
        '200':
          description: CSV file (attachment)
          content:
            text/csv: {}
      tags:
      - Convert