{ "openapi": "3.1.1", "info": { "title": "RavingDesk GeoJSON Validator & Inspector API", "version": "1.0.0", "summary": "Validate and repair GeoJSON (RFC 7946) and measure areas and lengths on WGS84.", "description": "Every endpoint performs the same calculation as the human page and returns inputs, result, units, assumptions, sources, warnings and computedAt. MCP endpoint: /mcp." }, "servers": [ { "url": "https://ravingdeskgeojsoninspector.usefulweb.app" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Validate and repair GeoJSON (RFC 7946) and measure areas and lengths on WGS84.", "description": "Checks a GeoJSON file against RFC 7946 with a plain-language problem list (open rings, wrong winding order, swapped longitude/latitude, out-of-range positions, obsolete crs, antimeridian edges), repairs what can be repaired without guessing, and reports geodesic polygon areas, perimeters and line lengths on the WGS84 ellipsoid, the bounding box (antimeridian-aware), centroids, which polygons contain a test point, and an optional geodesic buffer around points and lines. It is the GeoJSON engine of RavingDesk’s Data & charts.\n\nMethodology:\n- Validation follows RFC 7946: object structure, positions of 2–3 numbers within ±180° longitude and ±90° latitude, lines with ≥ 2 positions, closed rings with ≥ 4 positions, Feature members “geometry” and “properties”, bbox shape. The right-hand rule (counter-clockwise outer rings, clockwise holes) is reported as a warning, as the RFC tells parsers not to reject such files.\n- Ring orientation and areas use geodesic polygons on WGS84 (Karney 2013): edges are geodesics, so areas are exact for the polygon with geodesic edges. Holes are subtracted. Line lengths are geodesic too.\n- Point-in-polygon tests treat edges as straight lines in longitude/latitude (the usual GIS convention for GeoJSON) with the even–odd rule, holes respected; edges that jump more than 180° are read as crossing the antimeridian.\n- The bounding box is the smallest longitude interval around all positions, so it may cross the antimeridian (west > east, RFC 7946 §5.2). The centre is the normalised 3D mean of the positions; the area centroid is area-weighted in degrees.\n- Buffers: points get a geodesic circle of 64 vertices; lines get offset vertices at the buffer distance with round joins and caps. They are approximations (the line outline can self-intersect at sharp inner bends) and polygons are not buffered.", "tags": [ "apps" ], "x-mcp-tool": "ravingdesk_geojson_inspector", "x-owner-app": "ravingdesk", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/RavingdeskGeojsonInspectorInput" }, "examples": { "example1": { "summary": "Park outline, a street and a monument in Berlin, with a test point", "value": { "geojson": "{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"properties\":{\"name\":\"Tiergarten (rough outline, clockwise)\"},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[13.3364,52.5145],[13.3499,52.5196],[13.3778,52.5167],[13.3747,52.5099],[13.3491,52.5091],[13.3364,52.5145]]]}},{\"type\":\"Feature\",\"properties\":{\"name\":\"Straße des 17. Juni\"},\"geometry\":{\"type\":\"LineString\",\"coordinates\":[[13.3504,52.5145],[13.3612,52.5143],[13.3777,52.5163]]}},{\"type\":\"Feature\",\"properties\":{\"name\":\"Victory Column\"},\"geometry\":{\"type\":\"Point\",\"coordinates\":[13.350108,52.514543]}}]}", "testPoint": "52.5145, 13.3501" } }, "example2": { "summary": "A broken file: open ring, swapped coordinates, missing properties, crs member", "value": { "geojson": "{\"type\":\"FeatureCollection\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"features\":[{\"type\":\"Feature\",\"properties\":{\"name\":\"Unclosed square\"},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[0,0],[0,1],[1,1],[1,0]]]}},{\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[52.52,113.4]}},{\"type\":\"Feature\",\"properties\":{},\"geometry\":{\"type\":\"LineString\",\"coordinates\":[[10,10],[10,10],[11,11]]}}]}" } }, "example3": { "summary": "A 1 km buffer around a point and a line", "value": { "geojson": "{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"properties\":{\"name\":\"Victory Column\"},\"geometry\":{\"type\":\"Point\",\"coordinates\":[13.350108,52.514543]}},{\"type\":\"Feature\",\"properties\":{\"name\":\"Straße des 17. Juni\"},\"geometry\":{\"type\":\"LineString\",\"coordinates\":[[13.3504,52.5145],[13.3777,52.5163]]}}]}", "bufferM": 1000 } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/RavingdeskGeojsonInspectorResult" } } } }, "400": { "description": "Malformed JSON body.", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "422": { "description": "Invalid input (see errors[]).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "429": { "description": "Rate limit exceeded (see Retry-After).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } } } } }, "/api/v1/tool": { "get": { "operationId": "getToolDefinition", "summary": "Inputs, output schema and examples for this tool", "responses": { "200": { "description": "Tool definition.", "content": { "application/json": { "schema": { "type": "object" } } } } } } } }, "components": { "schemas": { "Problem": { "type": "object", "description": "RFC 9457 problem details. 422 responses include per-field `errors`.", "required": [ "type", "title", "status", "detail" ], "properties": { "type": { "type": "string" }, "title": { "type": "string" }, "status": { "type": "integer" }, "detail": { "type": "string" }, "code": { "type": "string" }, "errors": { "type": "array", "items": { "type": "object", "required": [ "field", "message" ], "properties": { "field": { "type": "string" }, "message": { "type": "string" } } } } } }, "RavingdeskGeojsonInspectorInput": { "type": "object", "additionalProperties": false, "properties": { "geojson": { "title": "GeoJSON", "description": "A FeatureCollection, a Feature or a bare geometry (up to 5 MB, 200,000 positions).", "type": "string", "maxLength": 5000000, "default": "{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"properties\":{\"name\":\"Tiergarten (rough outline, clockwise)\"},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[13.3364,52.5145],[13.3499,52.5196],[13.3778,52.5167],[13.3747,52.5099],[13.3491,52.5091],[13.3364,52.5145]]]}},{\"type\":\"Feature\",\"properties\":{\"name\":\"Straße des 17. Juni\"},\"geometry\":{\"type\":\"LineString\",\"coordinates\":[[13.3504,52.5145],[13.3612,52.5143],[13.3777,52.5163]]}},{\"type\":\"Feature\",\"properties\":{\"name\":\"Victory Column\"},\"geometry\":{\"type\":\"Point\",\"coordinates\":[13.350108,52.514543]}}]}" }, "repair": { "title": "Repair what can be repaired (close rings, fix winding, remove repeated positions)", "type": "boolean", "default": true }, "decimals": { "title": "Round coordinates to decimals (optional)", "description": "6 decimals ≈ 0.1 m, 7 ≈ 1 cm. Leave empty to keep them.", "type": "integer", "minimum": 0, "maximum": 10 }, "testPoint": { "title": "Test point (optional)", "description": "Latitude/longitude in any notation; the tool lists the polygons that contain it.", "type": "string", "maxLength": 120 }, "bufferM": { "title": "Buffer distance (optional)", "description": "Adds approximate geodesic buffer polygons around every point and line.", "type": "number", "minimum": 1, "maximum": 1000000, "x-unit": "m" } }, "required": [ "geojson" ] }, "RavingdeskGeojsonInspectorResult": { "type": "object", "additionalProperties": false, "required": [ "schemaVersion", "tool", "computedAt", "inputs", "summary", "result", "units", "assumptions", "sources", "warnings", "presentation", "links" ], "properties": { "schemaVersion": { "type": "string", "const": "1.0" }, "tool": { "type": "object", "additionalProperties": false, "required": [ "id", "name", "version" ], "properties": { "id": { "type": "string" }, "name": { "type": "string" }, "version": { "type": "string" } } }, "computedAt": { "type": "string", "format": "date-time" }, "inputs": { "type": "object", "description": "Normalised inputs actually used, including applied defaults." }, "summary": { "type": "string" }, "result": { "type": "object", "additionalProperties": false, "required": [ "valid", "type", "errors", "warnings", "problems", "stats", "repairs", "repaired", "containing", "buffers" ], "properties": { "valid": { "type": "boolean" }, "type": { "type": "string" }, "errors": { "type": "integer" }, "warnings": { "type": "integer" }, "problems": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "level", "path", "message", "repairable" ], "properties": { "level": { "type": "string", "enum": [ "error", "warning", "note" ] }, "path": { "type": "string" }, "message": { "type": "string" }, "repairable": { "type": "boolean" } } } }, "stats": { "type": "object", "additionalProperties": false, "required": [ "features", "geometryCounts", "positions", "lineLengthM", "areaM2", "perimeterM", "bbox", "center", "areaCentroid", "emptyGeometries" ], "properties": { "features": { "type": "integer" }, "geometryCounts": { "type": "object", "additionalProperties": { "type": "integer" } }, "positions": { "type": "integer" }, "lineLengthM": { "type": "number" }, "areaM2": { "type": "number" }, "perimeterM": { "type": "number" }, "bbox": { "type": [ "array", "null" ], "items": { "type": "number" }, "description": "[west, south, east, north]; west > east when it crosses the antimeridian." }, "center": { "type": [ "object", "null" ] }, "areaCentroid": { "type": [ "object", "null" ] }, "emptyGeometries": { "type": "integer" } } }, "repairs": { "type": "array", "items": { "type": "string" } }, "repaired": { "oneOf": [ { "type": "object", "additionalProperties": false, "required": [ "artifactId", "filename", "mime", "bytes", "sha256", "path" ], "properties": { "artifactId": { "type": "string" }, "filename": { "type": "string" }, "mime": { "type": "string" }, "bytes": { "type": "integer" }, "sha256": { "type": "string" }, "path": { "type": "string", "description": "Download path on the same site (valid for about 2 hours)." } } }, { "type": "null" } ] }, "containing": { "type": [ "array", "null" ], "items": { "type": "string" } }, "buffers": { "oneOf": [ { "type": "object", "additionalProperties": false, "required": [ "artifactId", "filename", "mime", "bytes", "sha256", "path" ], "properties": { "artifactId": { "type": "string" }, "filename": { "type": "string" }, "mime": { "type": "string" }, "bytes": { "type": "integer" }, "sha256": { "type": "string" }, "path": { "type": "string", "description": "Download path on the same site (valid for about 2 hours)." } } }, { "type": "null" } ] }, "features": { "type": "array", "items": { "type": "object" } } } }, "units": { "type": "object", "additionalProperties": { "type": "string" } }, "assumptions": { "type": "array", "items": { "type": "string" } }, "sources": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "title" ], "properties": { "title": { "type": "string" }, "url": { "type": "string" }, "publisher": { "type": "string" }, "retrievedAt": { "type": "string" }, "note": { "type": "string" } } } }, "warnings": { "type": "array", "items": { "type": "string" } }, "presentation": { "type": "array", "items": { "type": "object" }, "description": "Display blocks used by the human page (same data)." }, "links": { "type": "object", "additionalProperties": false, "required": [ "human", "api", "openapi", "methodology" ], "properties": { "human": { "type": "string", "format": "uri" }, "api": { "type": "string", "format": "uri" }, "openapi": { "type": "string", "format": "uri" }, "methodology": { "type": "string", "format": "uri" } } } } } } } }