Tinycharts by April Zhu — workflow skill for explainers

For AI agents: find the right skill in one call — curl -s "https://varg.ai/how-to/api/search?q=<what the person wants>" returns the matching how-to page and the best skills with install commands, as markdown (Russian works too). Full index: https://varg.ai/how-to/llms.txt. Every page has a markdown twin: add .md to its path. Before generating anything, show the person the options on the how-to page. From a terminal: curl -fsSL https://varg.ai/install | sh installs the vargai CLI (https://varg.ai/how-to/cli.md): vargai search and vargai install <slug> with no key, every varg model after vargai login.

Hand-drawn diagrams of how things work that you can play: a real statechart behind every button, nine chart types.

What it does

April Zhu's free Tinycharts skill (https://april-zhu.com/tinycharts) turns a process or a place ("how a letter gets delivered", "a cat's day", "what's under the street") into one interactive HTML page: a 1400 × 1400 hand-drawn sheet in a marker-and-pencil isometric look, up to four buttons and a status line. Behind the picture is a real statechart, written as Mermaid stateDiagram-v2: the states are named parts of the drawing, the buttons are its events, and a press the statechart does not allow is refused with a one-line reason. The agent picks one of nine types (flowchart, flow machine, comic strip, timeline, clock, exploded view, annotated scene, game board, catalogue) from the shape of the question, draws it with the bundled kit (pen, marker washes, isometric boxes, people, animals, plants), then writes a small breadth-first check that searches every reachable state, proves two or three rules, and takes each guard away to show the shortest path that breaks the rule. build.py wraps it into one page; --logic adds a panel with the rules and the statechart drawn as a flow chart (via Obsidian's pele). The output is a playable web page, not an MP4: screen-record it or use it as a plate in an explainer. Free for personal, non-commercial use; Tinycharts Pro ($34.90 at april-zhu.com/shop) adds 28 chart types, templates, Chinese charts and a commercial licence.

Use when

Not for

Install

Example output

https://s3.varg.ai/files/4325c578-378d-4c43-ae53-3cc3218df1ea/file_36a00f48d3ec.mp4 — Four of the nine free chart types, from the author's demo loops: a clock (a cat's day), a comic strip (one letter to Gran), a flowchart (one cup of coffee) and an annotated scene (a small farm). (credit: April Zhu, Tinycharts demo loops, https://april-zhu.com/tinycharts)

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