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.
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.
npx skills add HKUDS/Vibe-Trading --skill yfinancegit clone --depth 1 https://github.com/HKUDS/Vibe-TradingWrote 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.
[](https://agentmods.dev/skills/hkuds/vibe-trading/yfinance)<a href="https://agentmods.dev/skills/hkuds/vibe-trading/yfinance"><img src="https://agentmods.dev/badge/skills/hkuds/vibe-trading/yfinance/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.
<a href="https://agentmods.dev/skills/hkuds/vibe-trading/yfinance"><img src="https://agentmods.dev/badge/skills/hkuds/vibe-trading/yfinance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00041 | $0.02558 |
| Opus 5.5 | $0.00016 | $0.01023 |
| Sonnet 5.5 | $0.00008 | $0.00512 |
| Haiku 4.5 | $0.00004 | $0.00256 |
Grade A, and why
yfinance 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.
yfinance
Overview
yfinance is an open-source Python wrapper for Yahoo Finance, providing global market data (US, HK, and Canadian stocks, ETFs, indices) including historical and real-time quotes. Completely free, no registration or API key required.
The project has a built-in yfinance DataLoader (backtest/loaders/yfinance_loader.py). When backtesting, set source: "yfinance" or source: "auto" to invoke it automatically.
For OHLCV bars in agent/swarm work, prefer the get_market_data tool when it is available. It routes through the project loader layer, normalizes symbols, removes malformed OHLC rows, and returns strict JSON. Use direct yfinance calls mainly for data outside OHLCV coverage such as company info, financial statements, options, holders, and insider transactions.
Deep Yahoo Interfaces (references/)
Beyond the yfinance package, the project ships a built-in Yahoo public-API
client (backtest.loaders.yahoo_client) and two read-only agent tools that
sit on top of it. These reach Yahoo's own unauthenticated JSON endpoints
directly via requests (no yfinance install needed), share one throttled
HTTP gate (Yahoo rate-limits by source IP), and handle the cookie+crumb
handshake automatically. Each interface has its own reference doc — read the
one you need rather than loading them all:
| Doc | Covers |
|---|---|
| yahoo_client.get_chart | Direct v8 OHLCV bars (range or epoch window) |
| yahoo_client.get_quote_summary | v10 quoteSummary modules (key stats, financials, ownership) |
| yahoo_client.get_options | v7 option chain (expirations + calls/puts) |
| yahoo_client.search | v1 instrument search by ticker/name |
| get_options_chain tool | Agent tool: US options ladder envelope |
| get_stock_profile tool | Agent tool: company profile/estimates/ownership envelope |
What ships with it
6 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.
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.
- 1mo ago First seen · 267 lines · 41 tokens per session scan A 8fcc4752ed07
yfinance is a skill published in the GitHub repository HKUDS/Vibe-Trading (36,777 stars, last pushed yesterday), licensed MIT. It adds 41 tokens to every session and 2,558 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 2026-09-03.
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