{ "openapi": "3.1.1", "info": { "title": "Crossword Maker from Your Words and Clues API", "version": "1.0.0", "summary": "Criss-cross crosswords from your own words and clues, numbered, with an answer key.", "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://printshopcrosswordfill.usefulweb.app" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Criss-cross crosswords from your own words and clues, numbered, with an answer key.", "description": "Write one “word: clue” per line and get a printable criss-cross crossword: the words are interlocked into a compact grid, numbered in reading order, with Across and Down clue lists and the word lengths. Works in any script, including right-to-left Arabic.\n\nMethodology:\n- Only your words are used (no dictionary). Words are split into grapheme clusters like the word search. The first word is laid down, and every further word must cross a letter that is already in the grid; a placement is rejected when it would run into another word or put letters side by side.\n- Among the valid placements the one with the most crossings and the smallest grid wins; 40 seeded attempts with different word orders are compared and the layout with the most placed words, then the most crossings, then the smallest area is kept (at most 30 × 30 cells).\n- Numbers follow the reading order of the grid (right to left for Arabic and Hebrew lists); a cell that starts an Across and a Down word gets one number.\n\nWords without a shared letter cannot be joined and are left out (listed as a warning). This is a criss-cross puzzle, not a dense newspaper crossword.", "tags": [ "apps" ], "x-mcp-tool": "printshop_crossword_fill", "x-owner-app": "printshop", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/PrintshopCrosswordFillInput" }, "examples": { "example1": { "summary": "Seaside vocabulary with clues", "value": { "seed": "sea-1" } }, "example2": { "summary": "Spanish fruit (clues in English)", "value": { "words": "manzana: apple\nplátano: banana\nnaranja: orange\nfresa: strawberry\nuva: grape\npera: pear\nlimón: lemon\nsandía: watermelon", "lang": "es", "seed": "frutas" } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/PrintshopCrosswordFillResult" } } } }, "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" } } } } } }, "PrintshopCrosswordFillInput": { "type": "object", "additionalProperties": false, "properties": { "words": { "title": "Words and clues", "description": "One per line: word, then a colon and the clue (“Anchor: Heavy hook that keeps a ship in place”). Up to 60 words.", "type": "string", "maxLength": 8000, "default": "Lighthouse: Tower with a lamp that guides ships\nHarbour: Sheltered water where boats are moored\nAnchor: Heavy hook that keeps a ship in place\nSeagull: Noisy white bird of the coast\nTide: Twice-daily rise and fall of the sea\nSail: Cloth that catches the wind\nCompass: It always points north\nWave: Moving ridge of water\nIsland: Land with water all around" }, "uppercase": { "title": "Capital letters", "type": "boolean", "default": true }, "lang": { "title": "Language (for capital letters)", "type": "string", "enum": [ "en", "de", "fr", "es", "it", "pt", "nl", "pl", "tr", "ru", "uk", "ar", "hi", "zh", "ja", "ko", "id" ], "default": "en" }, "seed": { "title": "Seed", "description": "The same seed and settings always give the same puzzles. Change it for new ones.", "type": "string", "maxLength": 80, "default": "cross-1" }, "title": { "title": "Title on the page (optional)", "type": "string", "maxLength": 120, "default": "" }, "answers": { "title": "Answer-key pages", "type": "boolean", "default": true }, "header": { "title": "Name and date line", "type": "boolean", "default": true }, "paper": { "title": "Paper size", "type": "string", "enum": [ "a3", "a4", "a5", "a6", "b5", "letter", "legal", "tabloid", "halfletter" ], "default": "a4" }, "orientation": { "title": "Orientation", "type": "string", "enum": [ "portrait", "landscape" ], "default": "portrait" } }, "required": [] }, "PrintshopCrosswordFillResult": { "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": [ "width", "height", "crossings", "entries", "missing", "seed", "pages", "puzzlePages", "answerPages", "pageWidthMm", "pageHeightMm", "warnings", "files", "openInApp" ], "properties": { "width": { "type": "integer" }, "height": { "type": "integer" }, "crossings": { "type": "integer" }, "entries": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "number", "direction", "word", "clue", "row", "col", "length" ], "properties": { "number": { "type": "integer" }, "direction": { "type": "string" }, "word": { "type": "string" }, "clue": { "type": "string" }, "row": { "type": "integer" }, "col": { "type": "integer" }, "length": { "type": "integer" } } } }, "missing": { "type": "array", "items": { "type": "string" } }, "seed": { "type": "string" }, "pages": { "type": "integer" }, "puzzlePages": { "type": "integer" }, "answerPages": { "type": "integer" }, "pageWidthMm": { "type": "number" }, "pageHeightMm": { "type": "number" }, "warnings": { "type": "array", "items": { "type": "string" } }, "files": { "type": [ "object", "null" ], "additionalProperties": false, "required": [ "pdf", "svg", "png" ], "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)." } } }, "svg": { "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)." } } }, "png": { "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" } } } } } } } }