{ "openapi": "3.1.1", "info": { "title": "Laser Kerf Test \u0026 Press-Fit Gauge API", "version": "1.0.0", "summary": "Cut a kerf test coupon and a press-fit comb, then turn your measurement into kerf and fit settings.", "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://kerfwisekerftest.usefulweb.app" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Cut a kerf test coupon and a press-fit comb, then turn your measurement into kerf and fit settings.", "description": "Generate a kerf test frame (an opening divided into equal pieces) and a press-fit comb with engraved slot offsets for your material thickness. After cutting, push the pieces to one side, measure the gap and enter it: the tool divides it by the number of cuts and tells you the kerf compensation and the fit clearance to use for finger-joint boxes, slots and sliding lids.\n\nMethodology:\n- The kerf frame has an opening of n × piece width, divided into n pieces by n − 1 cuts. Including the two sides of the opening, n + 1 cuts cross the strip and each removes one kerf, so pushed together the pieces leave a gap of (n + 1) × kerf: kerf = gap ÷ (n + 1).\n- Comb slot k is cut at a nominal width of thickness + offset k; the laser widens it by one kerf. If slot k gives the fit you want, a slot that is kerf-compensated by the measured kerf needs a fit clearance of offset k + kerf to feel the same.\n- Cut the test without kerf compensation. Numbers are engraved with a single-stroke font on the engrave layer. SVG files use millimetres (width/height in mm, 1 user unit = 1 mm) with one group per layer: cut (red #e4002b), score (blue #0067c5), engrave (black) and labels (grey). DXF R12 uses the same layers, millimetres, y up.\n\nLaser cutters and CNC routers can start fires and release harmful fumes: never leave the machine unattended, use extraction, and never cut PVC, vinyl or other chlorine-containing plastics. Sizes, kerf and fit are starting points — check them with a test cut and follow your machine maker's safety rules.", "tags": [ "apps" ], "x-mcp-tool": "kerfwise_kerf_test", "x-owner-app": "kerfwise", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/KerfwiseKerfTestInput" }, "examples": { "example1": { "summary": "Test coupon for 3 mm plywood", "value": { "thickness": 3 } }, "example2": { "summary": "Evaluate: 1.65 mm gap over 10 pieces, slot 3 fits", "value": { "thickness": 3, "gap": 1.65, "slot": 3 } }, "example3": { "summary": "Acrylic 5 mm with finer steps", "value": { "thickness": 5, "fitStart": -0.2, "fitStep": 0.05, "fitCount": 9, "pieces": 12 } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/KerfwiseKerfTestResult" } } } }, "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" } } } } } }, "KerfwiseKerfTestInput": { "type": "object", "additionalProperties": false, "properties": { "thickness": { "title": "Material thickness (mm)", "type": "number", "minimum": 0.5, "maximum": 30, "default": 3 }, "pieces": { "title": "Pieces in the kerf frame", "type": "integer", "minimum": 3, "maximum": 30, "default": 10 }, "pieceWidth": { "title": "Piece width (mm)", "type": "number", "minimum": 3, "maximum": 50, "default": 10 }, "fitStart": { "title": "First comb slot: thickness plus (mm)", "type": "number", "minimum": -5, "maximum": 5, "default": -0.3 }, "fitStep": { "title": "Comb slot step (mm)", "type": "number", "minimum": 0.01, "maximum": 2, "default": 0.1 }, "fitCount": { "title": "Comb slots", "type": "integer", "minimum": 2, "maximum": 15, "default": 7 }, "gap": { "title": "Measured gap after pushing the pieces together (mm, 0 = not yet)", "type": "number", "minimum": 0, "maximum": 50, "default": 0 }, "slot": { "title": "Comb slot with the fit you want (0 = not yet)", "type": "integer", "minimum": 0, "maximum": 15, "default": 0 }, "sheetWidth": { "title": "Sheet or laser bed width (mm, 0 = no sheet)", "description": "With a sheet size the parts are nested onto as many sheets as needed; 0 lays every part out in one drawing.", "type": "number", "minimum": 0, "maximum": 5000, "default": 0 }, "sheetHeight": { "title": "Sheet or laser bed height (mm, 0 = no sheet)", "type": "number", "minimum": 0, "maximum": 5000, "default": 0 }, "spacing": { "title": "Gap between parts (mm)", "description": "For CNC routing use at least the cutter diameter.", "type": "number", "minimum": 0, "maximum": 100, "default": 4 }, "labels": { "title": "Part names on a separate label layer", "type": "boolean", "default": true }, "paper": { "title": "PDF pages", "type": "string", "enum": [ "fit", "a3", "a4", "a5", "a6", "b5", "letter", "legal", "tabloid", "halfletter" ], "default": "fit" } }, "required": [] }, "KerfwiseKerfTestResult": { "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": [ "kerf", "cuts", "slots", "chosenOffset", "suggestedKerf", "suggestedFit", "sheets", "parts", "pdfPages", "warnings", "files", "openInApp" ], "properties": { "kerf": { "type": [ "number", "null" ] }, "cuts": { "type": "integer" }, "slots": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "number", "offset", "width" ], "properties": { "number": { "type": "integer" }, "offset": { "type": "number" }, "width": { "type": "number" } } } }, "chosenOffset": { "type": [ "number", "null" ] }, "suggestedKerf": { "type": [ "number", "null" ] }, "suggestedFit": { "type": [ "number", "null" ] }, "sheets": { "type": "integer" }, "parts": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "label", "name", "width", "height", "sheet" ], "properties": { "label": { "type": "string" }, "name": { "type": "string" }, "width": { "type": "number" }, "height": { "type": "number" }, "sheet": { "type": "integer" } } } }, "pdfPages": { "type": "integer" }, "warnings": { "type": "array", "items": { "type": "string" } }, "files": { "type": [ "object", "null" ], "additionalProperties": false, "required": [ "pdf" ], "properties": { "pdf": { "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)." } } } } }, "openInApp": { "type": [ "string", "null" ] } } }, "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" } } } } } } } }