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 skloxo/TideTrading --skill yfinancegit clone --depth 1 https://github.com/skloxo/TideTradingWrote 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/skloxo/tidetrading/yfinance)<a href="https://agentmods.dev/skills/skloxo/tidetrading/yfinance"><img src="https://agentmods.dev/badge/skills/skloxo/tidetrading/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/skloxo/tidetrading/yfinance"><img src="https://agentmods.dev/badge/skills/skloxo/tidetrading/yfinance.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00046 | $0.02433 |
| Opus 5 | $0.00023 | $0.01216 |
| Sonnet 5 | $0.00009 | $0.00487 |
| Haiku 4.5 | $0.00005 | $0.00243 |
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 5d 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 — 256 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 stocks, HK 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.
- 5d ago First seen · 256 lines · 46 tokens per session scan A aed38132b84c
yfinance is a skill published in the GitHub repository skloxo/TideTrading (10 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 2,433 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 2026-09-03.
Other skills, from other repositories
yfinance
Skill "yfinance" from HKUDS/Vibe-Trading, covering yfinance, deep yahoo interfaces (references/), quick start, ticker format conversion and supported data types.
temporal-python-testing
Test Temporal workflows with pytest, time-skipping, and mocking strategies. Covers unit testing, integration testing, replay testing, and local development setup. Use when implementing Temporal workflow tests or debugging test failures.
python-package-management
Guide for managing packages in the Agent Framework Python monorepo, including creating new connector packages, versioning, and the lazy-loading pattern. Use this when adding, modifying, or releasing packages.
vnpy-export
Export a Vibe-Trading backtest strategy to a runnable vnpy CtaTemplate Python class — supports A-share equities, futures, and crypto via BarGenerator + ArrayManager.
python-code-quality
Code quality checks, linting, formatting, and type checking commands for the Agent Framework Python codebase. Use this when running checks, fixing lint errors, or troubleshooting CI failures.
cuopt-routing-api-python
Vehicle routing (VRP, TSP, PDP) with cuOpt — Python API only. Use when the user is building or solving routing in Python.