Chart not found

`;\n }\n\n return `\n\n\n \n HTML chart\n \n \n \n\n\n\n

\n\n \n\n`;\n}",[19,92],"f212f9e0-0145-11f1-942e-42dde27851f2","html-chart.md","3b725c94-0136-11f1-b8e3-42dde27851f2",115,["D",1770153535071],9,"Return a valid Highcharts options object as JSON.\n\n**Critical Rules:**\n\n1. Data format must match chart type:\n - Bar/Column with categories: \\`xAxis.categories\\` + simple numeric array\n - Scatter/Bubble: Array of objects with {x, y, name} properties\n - Line/Time: Datetime xAxis + [[timestamp, value]] pairs\n2. Never mix simple arrays and object notation in same series\n3. JSON must be syntactically valid (no trailing commas, proper quotes/braces)\n4. Follow the charting principles and data format rules provided.\n\nImportant: Return valid JSON. A screenshot will be automatically captured for\nyour review.\n\n## Example working output\n\n```\n{\n \"chart\": {\n \"type\": \"bubble\",\n \"plotBorderWidth\": 1,\n \"zoomType\": \"xy\"\n },\n \"legend\": {\n \"enabled\": false\n },\n \"title\": {\n \"text\": \"Relationship Between Diet and Obesity across countries\"\n },\n \"subtitle\": {\n \"text\": \"Daily fat and sugar intake compared to adult obesity rates across 15 nations\"\n },\n \"xAxis\": {\n \"gridLineWidth\": 1,\n \"title\": {\n \"text\": \"Daily fat intake\"\n },\n \"labels\": {\n \"format\": \"{value} gr\"\n },\n \"plotLines\": [\n {\n \"color\": \"black\",\n \"dashStyle\": \"dot\",\n \"width\": 2,\n \"value\": 65,\n \"label\": {\n \"rotation\": 0,\n \"y\": 15,\n \"style\": {\n \"fontStyle\": \"italic\"\n },\n \"text\": \"Safe fat intake 65g/day\"\n },\n \"zIndex\": 3\n }\n ]\n },\n \"yAxis\": {\n \"startOnTick\": false,\n \"endOnTick\": false,\n \"title\": {\n \"text\": \"Daily sugar intake\"\n },\n \"labels\": {\n \"format\": \"{value} gr\"\n },\n \"maxPadding\": 0.2,\n \"plotLines\": [\n {\n \"color\": \"black\",\n \"dashStyle\": \"dot\",\n \"width\": 2,\n \"value\": 50,\n \"label\": {\n \"align\": \"right\",\n \"style\": {\n \"fontStyle\": \"italic\"\n },\n \"text\": \"Safe sugar intake 50g/day\",\n \"x\": -10\n },\n \"zIndex\": 3\n }\n ]\n },\n \"tooltip\": {\n \"useHTML\": true,\n \"formatter\": \"function() { return this.value + '%'; }\",\n \"headerFormat\": \"\",\n \"pointFormat\": \"\",\n \"footerFormat\": \"

{point.country}
Fat intake:	{point.x}g
Sugar intake:	{point.y}g
Obesity (adults):	{point.z}%

\",\n \"followPointer\": true\n },\n \"plotOptions\": {\n \"series\": {\n \"dataLabels\": {\n \"enabled\": true,\n \"format\": \"{point.name}\"\n }\n }\n },\n \"series\": [\n {\n \"data\": [\n {\"x\": 95, \"y\": 95, \"z\": 13.8, \"name\": \"BE\", \"country\": \"Belgium\"},\n {\"x\": 86.5, \"y\": 102.9, \"z\": 14.7, \"name\": \"DE\", \"country\": \"Germany\"},\n {\"x\": 80.8, \"y\": 91.5, \"z\": 15.8, \"name\": \"FI\", \"country\": \"Finland\"},\n {\"x\": 80.4, \"y\": 102.5, \"z\": 12, \"name\": \"NL\", \"country\": \"Netherlands\"},\n {\"x\": 80.3, \"y\": 86.1, \"z\": 11.8, \"name\": \"SE\", \"country\": \"Sweden\"},\n {\"x\": 78.4, \"y\": 70.1, \"z\": 16.6, \"name\": \"ES\", \"country\": \"Spain\"},\n {\"x\": 74.2, \"y\": 68.5, \"z\": 14.5, \"name\": \"FR\", \"country\": \"France\"},\n {\"x\": 73.5, \"y\": 83.1, \"z\": 10, \"name\": \"NO\", \"country\": \"Norway\"},\n {\"x\": 71, \"y\": 93.2, \"z\": 24.7, \"name\": \"UK\", \"country\": \"United Kingdom\"},\n {\"x\": 69.2, \"y\": 57.6, \"z\": 10.4, \"name\": \"IT\", \"country\": \"Italy\"},\n {\"x\": 68.6, \"y\": 20, \"z\": 16, \"name\": \"RU\", \"country\": \"Russia\"},\n {\"x\": 65.5, \"y\": 126.4, \"z\": 35.3, \"name\": \"US\", \"country\": \"United States\"},\n {\"x\": 65.4, \"y\": 50.8, \"z\": 28.5, \"name\": \"HU\", \"country\": \"Hungary\"},\n {\"x\": 63.4, \"y\": 51.8, \"z\": 15.4, \"name\": \"PT\", \"country\": \"Portugal\"},\n {\"x\": 64, \"y\": 82.9, \"z\": 31.3, \"name\": \"NZ\", \"country\": \"New Zealand\"}\n ],\n \"colorByPoint\": true\n }\n ]\n}\n```\n\n## Syntax and Data Format Rules\n\n### Data Format Requirements\n\n- For bar/column charts: series.data should be a simple numeric array when\n xAxis.categories are defined.\n- **Bar/Column:** \\`xAxis.categories\\` with simple numeric array in series.data\n- **Scatter/Bubble:** Objects with x, y properties: \\`{x: 10, y: 20, name:\n \"Point\"}\\`\n- **Line/Time series:** Datetime xAxis with \\`[[timestamp, value], ...]\\` format\n\n**Axis Configuration for Bar Charts**\n\n- For HORIZONTAL bar charts (type: 'bar'):\n - xAxis = categories (treatment names, etc.)\n - yAxis = values (metrics, measurements)\n- For VERTICAL bar charts (type: 'column'):\n - xAxis = categories (treatment names, etc.)\n - yAxis = values (metrics, measurements)\n\n**Critical**: Do NOT swap xAxis and yAxis definitions when switching chart\ntypes. Whether using type: 'bar' (horizontal) or type: 'column' (vertical),\nALWAYS configure: xAxis.categories = your dimension/grouping (e.g., treatment\nnames) yAxis.title = your metric name (e.g., 'Brand Lift') series.data = numeric\nvalues Highcharts automatically handles the visual rotation—only the chart type\nchanges, not the axis definitions.\n\n### Data Structure Examples by Chart Type\n\nBar/Column with categories:\n\n```\n{\n \"xAxis\": {\"categories\": [\"A\", \"B\", \"C\"]},\n \"series\": [{\"data\": [10, 20, 30]}] // Simple array\n}\n```\n\nBar/Column with custom properties:\n\n```\n{\n \"xAxis\": {\"type\": \"category\"},\n \"series\": [{\n \"data\": [\n {\"y\": 10, \"name\": \"A\", \"color\": \"#fff\"},\n {\"y\": 20, \"name\": \"B\", \"color\": \"#fff\"}\n ]\n }]\n}\n```\n\nScatter/Bubble with multiple values:\n\n```\n{\n \"series\": [{\n \"data\": [\n {\"x\": 10, \"y\": 20, \"z\": 30, \"customProp\": \"value\"}\n ]\n }]\n}\n```\n\nFormatter Functions: When using Highcharts formatters (e.g., tooltip.formatter,\ndataLabels.formatter), output the function as a STRING. For example:\n\n```\n\"dataLabels\": {\n \"enabled\": true,\n \"formatter\": \"function() { return (this.y >= 0 ? '+' : '') + this.y.toFixed(1) + ' p.p.'; }\"\n}\n```\n\nFormat Strings vs. Formatters: Do NOT use printf-style format strings like\n{y:+.1f} in the format property—this is not valid Highcharts syntax. Use format\nONLY for simple Highcharts format syntax like {value}, {point.name}, or\n{point.custom}. For complex number formatting, use a formatter function as a\nstring instead.\n\n### Common Syntax and Data Format Errors to Avoid:\n\n- ❌ Mixing simple arrays with object notation in same series\n- ❌ Defining xAxis.categories AND using \"x\" properties in data points\n- ❌ Adding custom properties to data without corresponding tooltip formatter\n- ❌ Using custom properties in formatters without quotes/brackets\n- ❌ Using legends when showing a single series\n- ❌ Showing data labels on axes when data labels are present on data points\n (redundant axis labels)\n- ✅ When categories exist, map data by position (index), not by property\n- Confusing format: \"{y:+.1f} p.p.\" (invalid) with formatter: \"function() {\n return (this.y >= 0 ? '+' : '') + this.y.toFixed(1) + ' p.p.'; }\" (valid).\n\n## Charting principles\n\n- Use the largest feasible font sizes so the chart is readable easily.\n- Use charting principles from Edward Tufte and Gene Zelazny\n\n## Layout preferences\n\n- Prefer data labels on the data points rather than the legend, unless the chart\n is too crowded.\n- Grid lines should be very light, and dotted.\n- Axis titles should be clear, and include the unit of measurement.\n- If you are plotting multiple charts, align the axes to the same scale.\n\n## Common chart types\n\n- For marketing funnel analysis, use funnel chart type.\n- For comparisons of treatment effects, use bar chart type.",[19,100],"e615c8d2-012e-11f1-9a43-42dde27851f2",5,["D",1770143636502],1,"directory",[19],{"_36":107,"_13":19,"_65":68,"_67":-5,"_69":70,"_71":108,"_73":74,"_38":144,"_17":110,"_77":111,"_79":-5,"_81":51,"_82":-5,"_125":145,"_18":146},{"_36":137,"_13":138,"_65":139,"_67":-5,"_69":70,"_71":72,"_73":74,"_38":140,"_17":122,"_77":24,"_79":141,"_81":51,"_82":-5,"_125":142,"_18":143},{"_36":128,"_13":129,"_65":130,"_67":-5,"_69":70,"_71":131,"_73":74,"_38":132,"_17":133,"_77":78,"_79":134,"_81":51,"_82":-5,"_125":135,"_18":136},{"_36":117,"_13":118,"_65":119,"_67":-5,"_69":70,"_71":120,"_73":74,"_38":121,"_17":122,"_77":123,"_79":124,"_81":51,"_82":14,"_125":126,"_18":127},"238f1cba-0141-11f1-bd37-42dde27851f2","main.ts","019c24c3-8f64-7600-be8c-ef5c4b6cdb6a",94,["D",1770151470620],19,"http","import { Hono } from \"npm:hono@4\";\nimport { McpServer } from \"npm:@modelcontextprotocol/sdk@1/server/mcp.js\";\nimport { StreamableHTTPTransport } from \"npm:@hono/mcp@0\";\nimport TOOLS from \"./tools/index.ts\";\nimport { render } from \"./tools/html-chart.ts\";\n\nconst app = new Hono();\n\nconst mcpServer = new McpServer({\n name: \"hello-mcp\",\n version: \"1.0.0\",\n});\n\nconst transport = new StreamableHTTPTransport();\n\nfor (const tool of TOOLS) {\n const { name, config, cb } = tool;\n mcpServer.registerTool(name, config, cb);\n}\n\napp.all(\"/mcp\", async (c) => {\n if (!mcpServer.isConnected()) {\n await mcpServer.connect(transport);\n }\n\n return transport.handleRequest(c);\n});\n\napp.get(\"/\", (c) => {\n return c.text(`hello-mcp server running at: ${c.req.url + \"mcp\"}`);\n});\n\napp.get(\"/:chart_timestamp\", async (c) => {\n const chartTimestamp = c.req.param(\"chart_timestamp\");\n const html = await render(chartTimestamp);\n return c.html(html);\n});\n\nexport default app.fetch;","children",[],[118],"e1afb9e0-013f-11f1-8a41-42dde27851f2","db.ts","62eb996c-0135-11f1-a684-42dde27851f2",88,["D",1770150930598],6,"import { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\n\nawait sqlite.execute(`\n CREATE TABLE IF NOT EXISTS charts (\n id integer PRIMARY KEY,\n created_at INTEGER NOT NULL, -- in milliseconds, e.g. using Date.now\n config TEXT NOT NULL -- the highcharts json configuration\n );\n`);",[],[129],"bf276858-0150-11f1-8e7f-42dde27851f2","README.md","019c24c3-8f64-7600-be8c-ebf545405a4e",["D",1770158174110],"# Hello, MCP\n\nSimple MCP server using:\n\n- Hono\n- Zod\n- MCP TypeScript SDK\n- Val Town [SQLite](https://docs.val.town/reference/std/sqlite/) and\n [HTTP](https://docs.val.town/vals/http/)\n\nTest quickly on\n[playground.ai.cloudflare.com](https://playground.ai.cloudflare.com/) (and/or\nwatch this 40s [demo](https://screen.studio/share/KD0R86Oe)).\n\n## Tools\n\n1. [HTML charting](./tools/html-chart.ts)\n2. [Screenshotting](./tools/screenshot.ts)\n\n## Open questions\n\n- [ ] Should long tool descriptions (e.g.\n [html-chart.md](./tools/html-chart.md)) be extracted into\n 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Chart not found

{point.country}