Finance Skills is a collection of agent skills for financial analysis and trading, covering activities such as company valuation, earnings research, market analysis, and options calculations. It is for users who want coding agents to perform structured finance workflows, and the catalogue contains its skills, plugins, instructions, and MCP integration.
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 himself65/finance-skills --skill yfinance-datagit clone --depth 1 https://github.com/himself65/finance-skillsWrote 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/himself65/finance-skills/yfinance-data)<a href="https://agentmods.dev/skills/himself65/finance-skills/yfinance-data"><img src="https://agentmods.dev/badge/skills/himself65/finance-skills/yfinance-data.svg" alt="Measured on agentmods" height="20"></a>- Socket pass
- Snyk warn
- 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 | $0.00161 | $0.01328 |
| Opus 5 | $0.00081 | $0.00664 |
| Sonnet 5 | $0.00032 | $0.00266 |
| Haiku 4.5 | $0.00016 | $0.00133 |
Grade A, and why
yfinance-data scanned grade A with 1 finding 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 8d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
subprocess.check_call([sys.executable, "-m", "pip", "install", "-q", "yfinance"]) How it starts
The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
yfinance Data Skill
Fetches financial and market data from Yahoo Finance using the yfinance Python library.
Important: yfinance is not affiliated with Yahoo, Inc. Data is for research and educational purposes.
Step 1: Ensure yfinance Is Available
Current environment status:
!`python3 -c "exec('try:\n import yfinance\n print(\'yfinance \' + yfinance.__version__ + \' installed\')\nexcept Exception:\n print(\'YFINANCE_NOT_INSTALLED\')')"`
If YFINANCE_NOT_INSTALLED, install it before running any code:
import subprocess, sys
subprocess.check_call([sys.executable, "-m", "pip", "install", "-q", "yfinance"])
If yfinance is already installed, skip the install step and proceed directly.
Step 2: Identify What the User Needs
Match the user's request to one or more data categories below, then use the corresponding code from references/api_reference.md.
| User Request | Data Category | Primary Method |
|---|---|---|
| Stock price, quote | Current price | ticker.info or ticker.fast_info |
| Price history, chart data | Historical OHLCV | ticker.history() or yf.download() |
| Balance sheet | Financial statements | ticker.balance_sheet |
| Income statement, revenue | Financial statements | ticker.income_stmt |
| Cash flow | Financial statements | ticker.cashflow |
| Dividends | Corporate actions | ticker.dividends |
| Stock splits | Corporate actions | ticker.splits |
| Options chain, calls, puts | Options data | ticker.option_chain() |
| Earnings, EPS | Analysis | ticker.earnings_history |
| Analyst price targets | Analysis | ticker.analyst_price_targets |
| Recommendations, ratings | Analysis | ticker.recommendations |
| Upgrades/downgrades | Analysis | ticker.upgrades_downgrades |
| Institutional holders | Ownership | ticker.institutional_holders |
| Insider transactions | Ownership | ticker.insider_transactions |
| Company overview, sector | General info | ticker.info |
| Compare multiple stocks | Bulk download | yf.download() |
| Screen/filter stocks | Screener | yf.Screener + yf.EquityQuery |
| Sector/industry data | Market data | yf.Sector / yf.Industry |
| News | News | ticker.news |
What ships with it
2 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.
- 8d ago First seen · 120 lines · 161 tokens per session scan A 3b4480be6b8f
yfinance-data is a skill published in the GitHub repository himself65/finance-skills (3,292 stars, last pushed 11d ago), licensed MIT. It adds 161 tokens to every session and 1,328 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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