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tesserax

Specialized in generating charts, diagrams, and technical visualizations using the tesserax Python library

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Install / Use

npx skills add matcom/hulk --skill tesserax

Installs into whichever agent you are using.

About this skill
♊

Gemini Rules

Gemini CLI config

Quality Score

58/100

Supported Platforms

Gemini CLI
Zed

Our assessment of tesserax

tesserax scores 58/100 on our quality scale, 4151st of 4,617 Development & Engineering skills we index.

Its Gemini Rules is 2.2 KB long, split into 6 sections with 2 code examples: moderately detailed.

It has no GitHub stars yet, so there is no community track record; judge it on its content.

Substance
20/30
Structure
16/20
Description
12/15
Adoption
0/20
Freshness
11/15

Maintenance, license and trust

  • The repository was last updated about 8 months ago. That is recent enough to be usable, but agent tooling moves fast, so check the instructions against your agent's current version.
  • Our last check on 2026-10-18 found the source still online.
  • No license is declared. By default that means all rights are reserved: you can read it, but reusing or redistributing it is not clearly permitted. Ask the author before building on it commercially.
  • Its trust signals score 74/100, with 3 cautions from licensing, adoption, age or documentation. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.

Safety scan

No issues found

Our scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands. An AI review of the same text found nothing harmful.

AI review by kimi-k2.7-code on 2026-09-23. Automated pattern scan on 2026-09-24. It catches known dangerous patterns, not every risk — read a skill before letting an agent act on it.

tesserax compared with similar skills

All 4 of these similar skills score higher than tesserax; compare them before choosing.

SkillScoreStarsUpdatedFormat
tesserax (this skill)by matcom5808mo agoGemini Rules
taste-skillby Leonxlnx100110.6ktodayCLAUDE.md
Agent-Reachby Panniantong100109.2ktodayCLAUDE.md
headroomby headroomlabs-ai10078.9ktodayCLAUDE.md
ai-job-searchby ai-job-search-dev10069.8ktodayCLAUDE.md

Frequently asked questions

How do I install tesserax?
Run npx skills add matcom/hulk. The install tabs above show the steps for each supported agent.
Which AI agents does tesserax work with?
It is written for Gemini CLI and Zed, as a Gemini Rules file. Other agents that read the same format can often use it too.
Is tesserax safe to use?
Our scan of the whole file found no instruction hijacking, hidden characters, credential access, data exfiltration or destructive commands. An AI review of the same text found nothing harmful. It declares no license and scores 74/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
Is tesserax still maintained?
The repository was last updated about 8 months ago. That is recent enough to be usable, but agent tooling moves fast, so check the instructions against your agent's current version.

Skill content

View source on GitHub

name: tesserax description: Specialized in generating charts, diagrams, and technical visualizations using the tesserax Python library. Use when the user asks to "draw", "visualize", "chart", or "diagram" something, especially for architectural, hierarchical, or statistical data.

Tesserax Visualization Guide

Tesserax is a declarative Python library for creating SVG-based diagrams and charts. Use it for generating high-quality, programmatic visualizations.

Core Workflow

  1. Initialize Canvas: Always use the Canvas context manager.
  2. Define Shapes/Data: Use geometric primitives (Square, Circle, Text) or Chart for data.
  3. Layout semantic elements: Use RowLayout, ColumnLayout, GridLayout, Tree, or Force-Directed layouts.
  4. Connect with Anchors: Use semantic anchors (top, bottom, left, right, center) for connections.
  5. Export/Display: Use .fit().display() to finalize.

Code Patterns

Basic Diagram

from tesserax import Canvas, Square, Text, RowLayout, Polyline

with Canvas() as canvas:
    a = Square(size=2) + Text("A")
    b = Square(size=2) + Text("B")
    layout = RowLayout(children=[a, b], gap=2)
    p = Polyline(points=[a.anchor("right"), b.anchor("left")])

canvas.fit().display()

Statistical Chart

from tesserax import Canvas, Chart

data = [{"x": 1, "y": 10}, {"x": 2, "y": 20}]
with Canvas() as canvas:
    chart = Chart(data).mark_bar().encode(x="x", y="y")

canvas.fit().display()

Strategy for "Drawing" Requests

When the user asks to "draw" something:

  1. Analyze the data or structure to be visualized.
  2. Write a Python script using tesserax.
  3. Quarto Integration: If working inside a .qmd file (the primary format for this project), use a standard {python} code block.
    • End the block with canvas.fit().display().
    • Quarto will automatically capture the SVG output and render it in the document.
    • No manual file saving or export commands are needed.
  4. Standalone Execution: For non-Quarto contexts, execute the script and capture the SVG output to a file (e.g., diagram.svg).
  5. Environment Check: Ensure uv add tesserax is run if the library is not available in the current environment.

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matcom

View profile

View on GitHub
GitHub Stars0
CategoryDevelopment
Updated8mo ago
Forks0
matcom/tesserax

Trust signals

74/100

From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.

1 medium2 low