What is desmos-graphing?

A way to add interactive Desmos charts to Obsidian notes using code blocks. It supports functions, curves, inequalities, points, and mathematical relationships with configurable display settings.

Use it to plot functions, parametric curves, inequalities, points, and other mathematical relationships in Obsidian. Add graph settings such as the visible range and equation styling.

It lets you explore and present math visually inside your notes instead of switching to a separate graphing tool. You can also style graphs and restrict equations directly in the block.

desmos-graphing — Skill for Claude Code by BitYoungjae/marketplace

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add BitYoungjae/marketplace --skill desmos-graphing

Clone the repo

git clone --depth 1 https://github.com/BitYoungjae/marketplace

Made for: Claude Code.

Or install obsidian-blocks, the plugin that ships this one along with the rest of its 4 skills, 1 command, 1 agent.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/bityoungjae/marketplace/desmos-graphing/github.svg)](https://agentmods.dev/skills/bityoungjae/marketplace/desmos-graphing)

Your own site

<a href="https://agentmods.dev/skills/bityoungjae/marketplace/desmos-graphing"><img src="https://agentmods.dev/badge/skills/bityoungjae/marketplace/desmos-graphing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/bityoungjae/marketplace/desmos-graphing"><img src="https://agentmods.dev/badge/skills/bityoungjae/marketplace/desmos-graphing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,619 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.02619
Opus 5.5	$0.00018	$0.01048
Sonnet 5.5	$0.00009	$0.00524
Haiku 4.5	$0.00004	$0.00262

Measured 2mo ago against content hash 42da0f345ff6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

desmos-graphing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/obsidian-blocks/skills/desmos-graphing/SKILL.md · 320 lines

How it starts

The opening of the file, as written. The whole thing — 320 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Desmos Graphing in Obsidian

⚠️ CRITICAL: Dual Parser System

The plugin uses different parsers for different parts:

Location	Parser	pi	sqrt	Example
Settings	mathjs	`pi`	-	`left=-2*pi+0.5`
Equations	Desmos (LaTeX)	`\pi`	`\sqrt{x}`	`y=\sqrt{x}+\pi`
Points	Desmos (LaTeX)	`\pi`	`\sqrt{x}`	`(\pi/2, 1)`
Restrictions	plain math	numeric	`x^0.5`	`x>-1.5708`

✅ CORRECT
left=-0.5; right=2*pi+0.5
---
y=\sqrt{x}|blue
y=x/\sqrt{3}|green|0<=x<=3^0.5
(\pi/2, 0)|label:cos(90°)=0

❌ WRONG (will error)
left=-2*\pi               # Error: "Syntax error in part '\pi'"
y=\sin(x+pi/4)            # Error: "Too many variables" (p*i)
(pi/2, 0)                 # Error: "Too many variables" ← Points need LaTeX!
y=x/sqrt(3)|0<=x<=sqrt(3) # Error: "Too many variables" (s*q*r*t)

Key rule: \sqrt{x} in equations, x^0.5 in restrictions!

Code Block Format

```desmos-graph
[settings]
---
[equations]
```

Settings (optional) above ---, equations below
Each equation on its own line
Use | to add styling/restrictions to equations

Quick Start

Basic Function

```desmos-graph
y=x^2
y=\sin(x)|blue
```

With Settings

```desmos-graph
left=-2*pi; right=2*pi
bottom=-2; top=2
---
y=\sin(x)|red
y=\cos(x)|blue|dashed
```

Points and Labels

```desmos-graph
(0, 0)|label:Origin
(3, 4)|red|label:Point A
(\pi/2, 1)|blue|label:π/2    # Use \pi in coordinates!
y=x|dashed
```

⚠️ Points use LaTeX: (\pi/2, 0) not (pi/2, 0)

Essential Settings

Setting	Default	Description
`width`	600	Graph width in pixels
`height`	400	Graph height in pixels
`left`	-10	Left boundary
`right`	10	Right boundary
`bottom`	-7	Bottom boundary
`top`	7	Top boundary
`grid`	true	Show grid lines
`degreeMode`	radians	`radians` or `degrees`

Read the full file on GitHub · 320 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

reference.md 15 KB

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 320 lines · 44 tokens per session scan A 42da0f345ff6

Subscribe to this mod's changes

desmos-graphing is a skill published in the GitHub repository BitYoungjae/marketplace (6 stars, last pushed 5mo ago), licensed MIT. It adds 44 tokens to every session and 2,619 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Learning and teaching Scientific

desmos-graphing next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
desmos-graphingBitYoungjae/marketplace	Skill	6	5mo ago	MIT	A	44	Claude Code
lean-formalizewanshuiyin/Auto-claude-code-research-in-sleep	Skill	19k	3d ago	MIT	A	81	Claude Code
build-interactive-explainersEverMind-AI/Raven	Skill	6.0k	yesterday	Apache-2.0	A	102	Claude Code, Codex
tooluniverse-organic-chemistrymims-harvard/ToolUniverse	Skill	1.8k	yesterday	Apache-2.0	A	86	Claude Code
scaffold-exercisespedrohcgs/claude-code-my-workflow	Skill	1.7k	2d ago	MIT	A	101	Claude Code
edu-chem-reactionwy51ai/edulab	Skill	1.8k	14d ago	Apache-2.0	A	495	Claude Code
present-paperAperivue/medsci-skills	Skill	367	4d ago	MIT	A	59	Claude Code