Blueprint Chart

Name: Blueprint Chart
Author: blueprint-chart

Charts your AI writes for you.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

Validate Dsl: Parse and semantically validate a .bpc source. Returns { valid, errors[], warnings[] }. Errors include unknown chart types, unknown properties, and empty data blocks with nearest-neighbo
Inspect Dsl: Parse a .bpc source and return a structured summary: chartType, scenes, data (rowCount, entryCount, labels, seriesNames, multiSeries), annotation/colorize/highlight/area-fill presence fla
Recommend Chart Type: Start here before writing any .bpc. Takes column types, row count, and the user's goal (a prose sentence — it determines the chart family: comparison/ranking/part-to-whole/compos

What data it sees

Do you need an account

No: the server works without sign-in

Charts your AI writes for you. Describe the data and your assistant authors Blueprint Chart's plain-text format, validates it, and renders an interactive, accessible chart. No backend, no account, no API key.

Server tool list (11)

Raw names from tools/list. Only developers need these.

validate_dsl	Parse and semantically validate a .bpc source. Returns { valid, errors[], warnings[] }. Errors include unknown chart types, unknown properties, and empty data blocks with nearest-neighbour suggestions.
inspect_dsl	Parse a .bpc source and return a structured summary: chartType, scenes, data (rowCount, entryCount, labels, seriesNames, multiSeries), annotation/colorize/highlight/area-fill presence flags, series count.
recommend_chart_type	Start here before writing any .bpc. Takes column types, row count, and the user's goal (a prose sentence — it determines the chart family: comparison/ranking/part-to-whole/composition-over-time/trend/range). Returns ranked chart-type recommendations plus guidance.
render	Render a .bpc source to SVG (default), PNG, or HTML. With format:"png" the chart comes back as an inline IMAGE you and the user can both see — render, look at the result, fix issues, re-render. Always returns structured frame metadata. When MCP_PUBLIC_URL is set the response includes stateless `urls` ({png,svg,bpc}). Set modelVisible:false to display the image to the user without spending model image tokens. Pass `save:<path>` to write the output into MCP_FS_WRITE_DIR instead of returning it inline. Width/height are capped at 1600; PNGs are rasterized at 2× for retina sharpness.
list_chart_types	Reference list of every chart type the renderer supports, with aliases and one-line summaries. To choose a type for a dataset, call recommend_chart_type instead.
describe_chart_type	Return everything an LLM needs to write a .bpc for a given chart type — typically your second call, after recommend_chart_type. Input: { chartType: "bar-horizontal" } (or any canonical/alias name). Returns summary, when-to-use, when-NOT-to-use, full property list with enum choices, data-shape example, and a pointer to a canonical sample.
get_example	Return a canonical .bpc example. Pass { name } for a specific sample id, { chartType } for the first sample of that type, or no args for a starter sample.
search_examples	Find canonical .bpc examples by topic keywords and/or chart type. Returns ranked pointers { id, title, description, chartType } — call get_example with an id to fetch the full DSL.
list_palettes	List every named colour palette with its label and hex colours, for use in `colorPalette = "<name>"`.
get_grammar	Return the .bpc DSL grammar as markdown. Pass { section: "chart" \| "data" \| "properties" \| "scenes" \| "annotations" } for a focused subset, or no args for the full grammar.
export_chart	Turn a validated .bpc source into shareable URLs plus an inline visual preview of what was published. Returns { copyUrl, embedUrl, urls?, frame } and a scene-0 PNG image block so you can confirm the chart looks right before sharing. copyUrl opens an editable copy in the editor; embedUrl is a read-only iframe target; urls.{png,svg,bpc} (when MCP_PUBLIC_URL is set) are stateless rendered-image/source links. Set modelVisible:false to show the preview to the user only. Requires BLUEPRINT_CHART_EDITOR_URL; preview failures never block the export.