{ "openapi": "3.1.1", "info": { "title": "Sketchboard Auto Layout API", "version": "1.0.0", "summary": "Tidy up a diagram automatically: layered flowchart layout or a balanced mind map.", "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://sketchboardautolayout.usefulweb.app" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Tidy up a diagram automatically: layered flowchart layout or a balanced mind map.", "description": "Takes a Sketchboard board or a plain list of links (“A -\u003e B”) and arranges the boxes: a layered layout with few crossings for flowcharts and graphs in any direction, or a balanced left/right tree for mind maps. Returns the new positions, an SVG and the board file.\n\nMethodology:\n- Nodes are the board’s shapes, notes, texts and props that are not locked; links are connectors glued at both ends. From a link list every distinct name becomes a rounded box sized to its text.\n- Layered layout (Sugiyama et al. 1981): DFS back edges are reversed to remove cycles, ranks follow the longest path from the sources, long links get dummy nodes, barycentre sweeps (up to 12, the best ordering is kept) reduce crossings, and median alignment straightens links before overlaps are pushed apart. The result lists the number of crossings left between neighbouring ranks.\n- Mind map: a breadth-first tree from the root (the mind-map root shape, else the node with the most links); first-level branches go alternately right and left, whichever side is shorter so far, and every subtree is stacked vertically by its height.\n- The layout keeps the top-left corner of the old drawing and only moves boxes; glued connectors follow automatically.\n\nA layout is a starting point: very dense graphs keep some crossings, and nodes are not resized.", "tags": [ "apps" ], "x-mcp-tool": "sketchboard_auto_layout", "x-owner-app": "sketchboard", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SketchboardAutoLayoutInput" }, "examples": { "example1": { "summary": "Product plan from a link list", "value": { "edges": "Idea -\u003e Research\nResearch -\u003e Prototype\nPrototype -\u003e User test\nUser test -\u003e Prototype: needs changes\nUser test -\u003e Launch\nResearch -\u003e Budget\nBudget -\u003e Launch" } }, "example2": { "summary": "The same links left to right with wider gaps", "value": { "edges": "Idea -\u003e Research\nResearch -\u003e Prototype\nPrototype -\u003e User test\nUser test -\u003e Prototype: needs changes\nUser test -\u003e Launch\nResearch -\u003e Budget\nBudget -\u003e Launch", "direction": "LR", "gapX": 60, "gapY": 90 } }, "example3": { "summary": "Mind map board (template) re-balanced", "value": { "board": "{\"format\":\"sketchboard\",\"version\":1,\"name\":\"Project kickoff\",\"settings\":{\"grid\":20,\"showGrid\":true,\"snap\":true,\"sketchy\":false,\"unit\":\"m\",\"scale\":50,\"background\":\"#ffffff\"},\"layers\":[{\"id\":\"l1\",\"name\":\"Layer 1\",\"visible\":true,\"locked\":false}],\"elements\":[{\"id\":\"e3\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#64748b\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e5\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e4\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e7\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e6\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e9\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e8\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"eb\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#64748b\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ea\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ed\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ea\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ec\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ef\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ea\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ee\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"eh\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ea\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"eg\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ej\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#64748b\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ei\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"el\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ei\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ek\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"en\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ei\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"em\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ep\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ei\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"eo\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"er\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#64748b\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"eq\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"et\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"eq\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"es\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ev\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"eq\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"eu\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ex\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#64748b\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ew\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"ez\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ew\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"ey\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e11\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ew\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e10\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e13\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2.5,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"ew\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e12\",\"port\":\"auto\"},\"route\":\"curved\",\"startHead\":\"none\",\"endHead\":\"none\"},{\"id\":\"e1\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":420,\"y\":159,\"w\":200,\"h\":64,\"rot\":0,\"text\":\"Website relaunch\",\"fill\":\"#dbeafe\",\"stroke\":\"#1d4ed8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":20,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-root\"},{\"id\":\"e2\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":690,\"y\":94,\"w\":130,\"h\":44,\"rot\":0,\"text\":\"Goals\",\"fill\":\"#dcfce7\",\"stroke\":\"#334155\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":17,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-topic\"},{\"id\":\"e4\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":50,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"More sign-ups\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"e6\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":100,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Faster pages\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"e8\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":150,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Easier editing\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"ea\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":220,\"y\":44,\"w\":130,\"h\":44,\"rot\":0,\"text\":\"People\",\"fill\":\"#fef3c7\",\"stroke\":\"#334155\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":17,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-topic\"},{\"id\":\"ec\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Design: Mia\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"ee\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":50,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Code: Jonas\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"eg\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":100,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Content: Ada\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"ei\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":690,\"y\":244,\"w\":130,\"h\":44,\"rot\":0,\"text\":\"Timeline\",\"fill\":\"#fce7f3\",\"stroke\":\"#334155\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":17,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-topic\"},{\"id\":\"ek\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":200,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Discovery (2 weeks)\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"em\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":250,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Build (6 weeks)\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"eo\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":890,\"y\":300,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Launch in May\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"eq\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":220,\"y\":169,\"w\":130,\"h\":44,\"rot\":0,\"text\":\"Risks\",\"fill\":\"#fee2e2\",\"stroke\":\"#334155\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":17,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-topic\"},{\"id\":\"es\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":150,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Old links break\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"eu\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":200,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Content not ready\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"ew\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":220,\"y\":294,\"w\":130,\"h\":44,\"rot\":0,\"text\":\"Budget\",\"fill\":\"#e0e7ff\",\"stroke\":\"#334155\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":17,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-topic\"},{\"id\":\"ey\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":250,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Design 30 %\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"e10\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":300,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Development 55 %\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"},{\"id\":\"e12\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":0,\"y\":350,\"w\":150,\"h\":32,\"rot\":0,\"text\":\"Buffer 15 %\",\"fill\":\"none\",\"stroke\":\"#94a3b8\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":15,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"mind-leaf\"}]}", "mode": "mindmap" } }, "example4": { "summary": "Flowchart board laid out left to right", "value": { "board": "{\"format\":\"sketchboard\",\"version\":1,\"name\":\"Sign-up flow\",\"settings\":{\"grid\":20,\"showGrid\":true,\"snap\":true,\"sketchy\":false,\"unit\":\"m\",\"scale\":50,\"background\":\"#ffffff\"},\"layers\":[{\"id\":\"l1\",\"name\":\"Layer 1\",\"visible\":true,\"locked\":false}],\"elements\":[{\"id\":\"ea\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e1\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"eb\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e3\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ec\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"no\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e3\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e4\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ed\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e4\",\"port\":\"e\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e2\",\"port\":\"e\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ee\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"yes\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e3\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e5\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ef\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"yes\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e5\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e6\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"eg\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"no\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e5\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e7\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"eh\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e7\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e8\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ei\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e8\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e9\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"ej\",\"type\":\"line\",\"layer\":\"l1\",\"x\":0,\"y\":0,\"w\":0,\"h\":0,\"rot\":0,\"text\":\"\",\"fill\":\"none\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":14,\"color\":\"#111827\",\"align\":\"center\",\"start\":{\"x\":0,\"y\":0,\"el\":\"e6\",\"port\":\"auto\"},\"end\":{\"x\":0,\"y\":0,\"el\":\"e9\",\"port\":\"auto\"},\"route\":\"elbow\",\"startHead\":\"none\",\"endHead\":\"arrow\"},{\"id\":\"e1\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":73,\"y\":60,\"w\":260,\"h\":66,\"rot\":0,\"text\":\"Visitor opens the sign-up page\",\"fill\":\"#dcfce7\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"terminator\"},{\"id\":\"e2\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":98,\"y\":196,\"w\":210,\"h\":48,\"rot\":0,\"text\":\"Fill in name and e-mail\",\"fill\":\"#ffffff\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"process\"},{\"id\":\"e3\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":64,\"y\":314,\"w\":277,\"h\":80,\"rot\":0,\"text\":\"Is the e-mail valid?\",\"fill\":\"#fef3c7\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"decision\"},{\"id\":\"e4\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":415,\"y\":480,\"w\":256,\"h\":48,\"rot\":0,\"text\":\"Show a clear error message\",\"fill\":\"#ffffff\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"process\"},{\"id\":\"e5\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":40,\"y\":464,\"w\":325,\"h\":80,\"rot\":0,\"text\":\"Account exists already?\",\"fill\":\"#fef3c7\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"decision\"},{\"id\":\"e6\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":92,\"y\":622,\"w\":221,\"h\":48,\"rot\":0,\"text\":\"Offer to sign in instead\",\"fill\":\"#ffffff\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"process\"},{\"id\":\"e7\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":363,\"y\":614,\"w\":188,\"h\":64,\"rot\":0,\"text\":\"Create the account\",\"fill\":\"#ffffff\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"database\"},{\"id\":\"e8\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":292,\"y\":748,\"w\":231,\"h\":48,\"rot\":0,\"text\":\"Send the welcome e-mail\",\"fill\":\"#ffffff\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"process\"},{\"id\":\"e9\",\"type\":\"shape\",\"layer\":\"l1\",\"x\":197,\"y\":866,\"w\":193,\"h\":48,\"rot\":0,\"text\":\"Show the dashboard\",\"fill\":\"#dcfce7\",\"stroke\":\"#1f2937\",\"sw\":2,\"dash\":\"solid\",\"opacity\":1,\"font\":\"sans\",\"size\":16,\"color\":\"#111827\",\"align\":\"center\",\"shape\":\"terminator\"}]}", "mode": "layered", "direction": "LR" } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/SketchboardAutoLayoutResult" } } } }, "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" } } } } } }, "SketchboardAutoLayoutInput": { "type": "object", "additionalProperties": false, "properties": { "edges": { "title": "Links, one per line", "description": "For example “Idea -\u003e Research” or “Research -\u003e Prototype: needs a budget”. A line with only a name adds a lonely box. Ignored when a board is given.", "type": "string", "maxLength": 200000, "default": "" }, "board": { "title": "Or a Sketchboard board (JSON)", "description": "A .sketchboard.json file. Shapes that are glued to connectors are laid out; locked shapes stay.", "type": "string", "maxLength": 4000000, "default": "" }, "mode": { "title": "Layout", "type": "string", "enum": [ "auto", "layered", "mindmap" ], "default": "auto" }, "direction": { "title": "Direction (layered)", "type": "string", "enum": [ "TB", "LR", "BT", "RL" ], "default": "TB" }, "gapX": { "title": "Gap between neighbours", "type": "integer", "minimum": 10, "maximum": 400, "default": 40 }, "gapY": { "title": "Gap between ranks", "type": "integer", "minimum": 10, "maximum": 400, "default": 60 } }, "required": [] }, "SketchboardAutoLayoutResult": { "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" }, "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" } } } } } } } }