Cursor rules for Hashgraph Online development with TypeScript, building AI agent

Cursor rules for Hashgraph Online development with TypeScript, building AI agent is a skill for Claude Code, Codex from AmariahAK/atlarix-skills. It costs 14 tokens per session (1,938 once invoked), scanned A, original, Apache-2.0.

A set of coding guidelines for TypeScript applications that build AI agents and decentralised apps on Hedera using Hashgraph Online tools.

In plain words
What is it for?
Use it to build or maintain Hashgraph Online projects, including AI agents that use the Registry Broker and related Hedera services.
Why use it?
It gives the coding agent project-specific rules for types, testing, packages, and agent integration, reducing inconsistent or unsafe code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Cursor.

Good fit Use it to build or maintain Hashgraph Online projects, including AI agents that use the Registry Broker and related Hedera services.

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Install with agentmods
npx agentmods add skills/amariahak/atlarix-skills/acr-hol-hedera-typescript-cursorrules-prompt-file
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 AmariahAK/atlarix-skills --skill acr-hol-hedera-typescript-cursorrules-prompt-file
Clone the repo
git clone --depth 1 https://github.com/AmariahAK/atlarix-skills

Made for: Claude Code, Codex.

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 Cursor rules for Hashgraph Online development with TypeScript, building AI agent

README.md
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Your own site
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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 Cursor rules for Hashgraph Online development with TypeScript, building AI agent

Your own site · 80×15
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/acr-hol-hedera-typescript-cursorrules-prompt-file"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/acr-hol-hedera-typescript-cursorrules-prompt-file.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,938 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 $0.00014 $0.01938
Opus 5 $0.00007 $0.00969
Sonnet 5 $0.00003 $0.00388
Haiku 4.5 $0.00001 $0.00194

Measured 9d ago against content hash 202e54eaf0a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Cursor rules for Hashgraph Online development with TypeScript, building AI agent 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.

skills/acr-hol-hedera-typescript-cursorrules-prompt-file/SKILL.md · 275 lines

How it starts

The opening of the file, as written. The whole thing — 275 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cursor rules for Hashgraph Online development with TypeScript, building AI agent

When to use this skill

Cursor rules for Hashgraph Online development with TypeScript, building AI agents on Hedera with RegistryBrokerClient.

Source

Synced from https://github.com/PatrickJS/awesome-cursorrules/tree/main/rules/hol-hedera-typescript-cursorrules-prompt-file.mdc.

Hashgraph Online (HOL) Development Rules

You are an expert TypeScript developer building applications with Hashgraph Online (HOL) - the open-source SDK for AI agents and decentralized applications on Hedera.

Technology Stack

Core:

  • Language: TypeScript (strict mode)
  • Runtime: Node.js 20+
  • Package Manager: pnpm
  • Testing: Jest with @swc/jest

HOL SDK:

  • @hashgraphonline/standards-sdk - Core SDK for HCS standards and Registry Broker
  • @hol-org/hashnet-mcp - MCP server for AI agent integration

Frontend (when applicable):

  • Framework: Next.js 14+ (App Router)
  • UI: shadcn/ui + Tailwind CSS
  • Icons: react-icons (Lucide preferred)

Coding Standards

TypeScript Requirements

  • NEVER use any - define proper interfaces
  • NEVER use as any casting - use type guards
  • ALWAYS define explicit return types
  • ALWAYS use generics for flexible code
  • Validate external data with type guards or zod

File Naming

  • Use kebab-case: registry-client.ts, topic-manager.ts
  • Test files: __tests__/registry-client.test.ts
  • Components: registry-browser.tsx

Code Style

  • Max 500 lines per file - split larger files
  • No nested ternaries
  • No inline comments - use JSDoc only
  • No console.log - use Logger from standards-sdk
  • Prettier formatting required

React Patterns (when applicable)

  • NO render functions like renderContent()
  • NO inline callbacks in JSX
  • NO hooks in loops/conditionals
  • ALWAYS use separate child components
  • ALWAYS define Props interfaces

HOL SDK Usage

RegistryBrokerClient - Initialization

import { RegistryBrokerClient } from '@hashgraphonline/standards-sdk';

const client = new RegistryBrokerClient({
  baseUrl: 'https://api.hol.org',
  apiKey: process.env.HOL_API_KEY,
});

Read the full file on GitHub · 275 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.

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 · 275 lines · 14 tokens per session scan A 202e54eaf0a2

Subscribe to this mod's changes

Cursor rules for Hashgraph Online development with TypeScript, building AI agent is a skill published in the GitHub repository AmariahAK/atlarix-skills (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 14 tokens to every session and 1,938 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 2026-09-03.

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