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yfinance

yfinance global market data interface — retrieve OHLCV, financials, insider transactions, and institutional holdings for US stocks, HK stocks, ETFs, and indices via Yahoo Finance. Free, no API key required.

66

Quality

80%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./a_全网优秀资源/10_大模型/07_skill包/vibe_trading_skills/yfinance/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

77%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A highly actionable, well-structured reference skill with copy-paste code, but it is slightly padded with redundant ticker lists and keeps all content inline rather than splitting detailed references into bundle files.

Suggestions

Move the Popular Ticker Reference tables and per-data-type examples into a separate references/ file, keeping SKILL.md as a concise overview with one-level-deep links.

Trim the Popular Ticker Reference tables or the repeated yf.download boilerplate to reduce token cost where Claude already knows the content.

Consolidate the OHLCV download examples so each interval/rate-limit detail appears once instead of across Quick Start and the Historical OHLCV section.

DimensionReasoningScore

Conciseness

Mostly efficient executable code with brief explanations, but the Popular Ticker Reference tables (companies most users know, like AAPL=Apple) and repeated download patterns add tokens that could be trimmed.

2 / 3

Actionability

Fully executable, copy-paste-ready code throughout (yf.download, yf.Ticker().info/financials/etc.) with specific ticker examples and config.json blocks.

3 / 3

Workflow Clarity

As a data-source reference skill the single actions are unambiguous and well-sequenced (install → import → download/Ticker); no destructive or batch operation requires validation checkpoints here.

3 / 3

Progressive Disclosure

Well-organized sections, but the file is ~250 lines with everything inline and no external references; the ticker reference tables and per-type examples could be split into separate reference files.

2 / 3

Total

10

/

12

Passed

Description

82%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A specific, well-targeted description with strong trigger terms and a clear niche, but it omits an explicit 'when to use' trigger clause, which caps completeness at 2.

Suggestions

Add an explicit 'Use when...' clause, e.g. 'Use when the user asks for Yahoo Finance market data, historical OHLCV bars, financials, or institutional holdings for US/HK stocks, ETFs, or indices.'

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'retrieve OHLCV, financials, insider transactions, and institutional holdings' — matching the top anchor for specific concrete actions.

3 / 3

Completeness

It clearly answers 'what' (retrieve OHLCV, financials, holdings) but lacks an explicit 'Use when...' clause or equivalent trigger guidance, capping completeness at 2 per the rubric.

2 / 3

Trigger Term Quality

Natural terms a user would say are well covered: 'US stocks, HK stocks, ETFs, and indices', 'Yahoo Finance', 'OHLCV', 'financials'; third-person voice ('retrieve') is correctly used.

3 / 3

Distinctiveness Conflict Risk

The yfinance/Yahoo Finance global-market niche with distinct ticker formats is clearly distinguishable and unlikely to trigger for the wrong skill.

3 / 3

Total

11

/

12

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
charliedream1/ai_quant_trade
Reviewed

Table of Contents

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