harmonic

harmonic is a skill for Claude Code, Codex from HKUDS/Vibe-Trading. It costs 49 tokens per session (370 once invoked), scanned A, original, MIT.

A pattern-based trading tool that looks for five-point price shapes built from Fibonacci ratios. It identifies patterns such as Gartley, Bat, Butterfly, and Crab, then signals a possible reversal near a Potential Reversal Zone.

In plain words
What is it for?
Use it to scan market prices for bullish or bearish harmonic patterns and produce long, short, or stand-aside signals.
Why use it?
It gives traders a defined way to look for possible turning points instead of relying only on visual guesswork.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to scan market prices for bullish or bearish harmonic patterns and produce long, short, or stand-aside signals.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hkuds/vibe-trading/harmonic
About the project

Vibe-Trading is a personal trading agent that gives an AI system tools for market analysis, algorithmic trading, backtesting, and related workflows. It is for users who want an agent to research and evaluate trading strategies or manage simulated and other trading activities. The catalogue contains skills that expose these trading capabilities to compatible agents.

HKUDS/Vibe-Trading · 33,017 stars · on GitHub · vibetrading.wiki

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 HKUDS/Vibe-Trading --skill harmonic
Clone the repo
git clone --depth 1 https://github.com/HKUDS/Vibe-Trading

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 harmonic

README.md
[![agentmods](https://agentmods.dev/badge/skills/hkuds/vibe-trading/harmonic/github.svg)](https://agentmods.dev/skills/hkuds/vibe-trading/harmonic)
Your own site
<a href="https://agentmods.dev/skills/hkuds/vibe-trading/harmonic"><img src="https://agentmods.dev/badge/skills/hkuds/vibe-trading/harmonic/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 harmonic

Your own site · 80×15
<a href="https://agentmods.dev/skills/hkuds/vibe-trading/harmonic"><img src="https://agentmods.dev/badge/skills/hkuds/vibe-trading/harmonic.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 370 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. ✓ AI security review Fable 5.1 · 6 Sept 2026 📄 Read the review Third-party audits
  • Snyk pass 7 Sept 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00049 $0.00370
Opus 5 $0.00024 $0.00185
Sonnet 5 $0.00010 $0.00074
Haiku 4.5 $0.00005 $0.00037

Measured 9d ago against content hash 9adb50799d58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

harmonic 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.

The scan reads SKILL.md. This mod also ships 1 executable file (example_signal_engine.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • harmonic — 100% identical, 0 lines differ
agent/src/skills/harmonic/SKILL.md · 44 lines

What it actually says

Harmonic Patterns

Purpose

The Fibonacci geometry school uses precise ratio relationships to identify price patterns:

Pattern B-Point Retracement D-Point Retracement Direction
Gartley 0.618 XA 0.786 XA Reversal
Bat 0.382-0.5 XA 0.886 XA Reversal
Butterfly 0.786 XA 1.27 XA Reversal
Crab 0.382-0.618 XA 1.618 XA Reversal

Core Concepts

  • XABCD five-point pattern: a price structure defined by precise Fibonacci ratios
  • PRZ (Potential Reversal Zone): the convergence area around point D, where reversal probability is high
  • Bullish pattern (point D at the bottom) → buy signal
  • Bearish pattern (point D at the top) → sell signal

Dependencies

pip install "vibe-trading-ai[harmonic]"

pyharmonics is optional. If the extra is not installed, the example signal engine falls back to the bundled detector.

Parameters

Parameter Default Description
is_stock False Whether the instrument is a stock (affects analysis parameters)

Signal Convention

  • 1 = long, -1 = short, 0 = stand aside
Files

What ships with it

3 files 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 · 44 lines · 49 tokens per session scan A 9adb50799d58

Subscribe to this mod's changes

harmonic is a skill published in the GitHub repository HKUDS/Vibe-Trading (33,017 stars, last pushed yesterday), licensed MIT. It adds 49 tokens to every session and 370 once invoked, about $0.0002 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.

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