new-diagram

new-diagram is a command for Claude Code, Cursor from HoangYell/markdy-com. It costs 20 tokens per session (250 once invoked), scanned A, original, MIT.

A command that creates a starter MarkdyScript file, the text format for animated architecture diagrams.

In plain words
What is it for?
Use it to scaffold a new diagram showing a client request, service processing, caching, database storage, and the response.
Why use it?
It saves time when beginning a new diagram by providing standard nodes, groups, layout settings, and example process steps.

Command for Claude CodeCursor

Written for Cursor and Claude Code: shipped in a Cursor plugin, but also a Claude Code command (commands/*.md).

Part of the markdy plugin — 3 skills, 2 commands, 1 agent shipped together

Good fit Use it to scaffold a new diagram showing a client request, service processing, caching, database storage, and the response.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/hoangyell/markdy-com/new-diagram
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.

Clone the repo
git clone --depth 1 https://github.com/HoangYell/markdy-com

Made for: Claude Code, Cursor.

Or install markdy, the plugin that ships this one along with the rest of its 3 skills, 2 commands, 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.

agentmods badge for new-diagram

README.md
[![agentmods](https://agentmods.dev/badge/commands/hoangyell/markdy-com/new-diagram/github.svg)](https://agentmods.dev/commands/hoangyell/markdy-com/new-diagram)
Your own site
<a href="https://agentmods.dev/commands/hoangyell/markdy-com/new-diagram"><img src="https://agentmods.dev/badge/commands/hoangyell/markdy-com/new-diagram/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.

agentmods 80×15 button for new-diagram

Your own site · 80×15
<a href="https://agentmods.dev/commands/hoangyell/markdy-com/new-diagram"><img src="https://agentmods.dev/badge/commands/hoangyell/markdy-com/new-diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 250 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.00250
Opus 5 $0.00010 $0.00125
Sonnet 5 $0.00004 $0.00050
Haiku 4.5 $0.00002 $0.00025

Measured 9d ago against content hash 397d6e2115a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

new-diagram 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 9d 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.

commands/new-diagram.md · 38 lines

What it actually says

Scaffold New Markdy Diagram

Create a new .markdy diagram file in the current directory with standard directives, groups, and narrative beats:

scene "System Architecture" theme=midnight
layout LR

browser Client "Client Application"
gateway Gateway "API Gateway"
service ApiService "Core Service"
cache Cache "Redis Cache"
database Database "PostgreSQL"

group edge "Edge": Client Gateway
group backend "Backend": ApiService
group storage "Data": Cache Database

beat init "1. Request Flow":
  show $nodes stagger=40ms
  frame Client Gateway ApiService zoom=1.12
  Client -> Gateway "POST /api/action" -> ApiService "process"
  ApiService -> Cache "check cache"
  ApiService <- Cache "miss"

beat persist "2. Data Persistence":
  frame ApiService Database zoom=1.15
  ApiService -> Database "INSERT record"
  ApiService ~> Cache "SETEX key"
  Client <- Gateway "200 Success"
  glow Database color=#22c55e
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.

  1. 9d ago First seen · 38 lines · 20 tokens per session scan A 397d6e2115a5

Subscribe to this mod's changes

new-diagram is a command published in the GitHub repository HoangYell/markdy-com (93 stars, last pushed 2d ago), licensed MIT. It adds 20 tokens to every session and 250 once invoked, about $0.0001 per session on Opus 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 2026-08-30.