@tradecanvas/mcp

An MCP server for TradeCanvas, so a coding agent looks names up instead of guessing them. It answers from a catalog generated from the library's own code: the same version, the same names.

claude mcp add tradecanvas -- npx -y @tradecanvas/mcp

On Windows outside WSL, npx starts through cmd:

claude mcp add tradecanvas -- cmd /c npx -y @tradecanvas/mcp

In Git Bash, which runs the ! commands of Claude Code on Windows, write cmd //c npx -y @tradecanvas/mcp: Git Bash turns /c into a path.

Cursor, Claude Desktop and most other clients take the same command in their MCP settings (on Windows, "command": "cmd", "args": ["/c", "npx", "-y", "@tradecanvas/mcp"]):

{
  "mcpServers": {
    "tradecanvas": { "command": "npx", "args": ["-y", "@tradecanvas/mcp"] }
  }
}

Codex adds it with codex mcp add tradecanvas -- npx -y @tradecanvas/mcp, or reads it from ~/.codex/config.toml, where the key is mcp_servers:

[mcp_servers.tradecanvas]
command = "npx"
args = ["-y", "@tradecanvas/mcp"]

Tools

All of them read only; none touches the network or your files.

| Tool | What it answers | |---|---| | list_indicators | The built-in indicators: id, name, and whether it draws over the price or in a pane. Search by words. | | get_indicator | One indicator in full: default params, inputs, the keys of its lines (RSI's is value, not rsi), levels, and code that adds it and reads it. | | list_drawing_tools | The drawing tools: the type that addDrawing and setDrawingTool take, the points each needs, its options. | | list_options | The options of ChartWidget, Chart or ChartWidgetGrid: name, TypeScript type, doc, allowed values. | | list_widget_features | The names ChartWidget's features switch takes. | | list_style_keys | The chart's style keys and the value each takes, for overrides and applyOverrides. | | validate_options | Checks an options object before it is used: unknown names with the one likely meant, values outside the allowed ones, numbers given as strings, intervals, feature switches, style overrides, languages, and nested options. |

A check, for instance:

{ "target": "ChartWidget", "options": { "timeFrame": "5m", "chartType": "line", "locale": "ja" } }

- timeFrame: Unknown option 'timeFrame' for ChartWidget. Did you mean 'timeframe'?
- chartType: Unknown option 'chartType' for ChartWidget. It is a Chart option: on ChartWidget it goes in `chartOptions`.
Note: 日本語 ('ja') is not built into the widget: call registerWidgetLocales() from '@tradecanvas/chart/widget/locales' before creating it.

Also

• The agent skill teaches the API itself, with worked examples: /plugin marketplace add bonguynvan/tradecanvas in Claude Code, or npx skills add bonguynvan/tradecanvas.
• llms.txt and llms-full.txt hold the docs in one file.

Node 20.19 or later. MIT.