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Verify the syntax of an alpha expression irrespective of field existence. Use when checking if an alpha expression string is syntactically valid, has correct function arguments, and properly matched parentheses.
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Calculates self-correlation and PPAC (Power Pool Alpha Correlation) for WorldQuant BRAIN alphas Locally, this can be very fast than query the platform via mcp. Use this when the user calculates alpha correlations, checks PPAC.
Automatically analyzes BRAIN dataset fields and generates feature engineering ideas for alpha creation. Input: data category, delay, region parameters; Output: markdown document with deep feature engineering suggestions. The skill performs autonomous analysis based on dataset and field information, proposing meaningful feature concepts.
Provides 6 proven methods to evaluate new datasets on the WorldQuant BRAIN platform. Includes methods for checking coverage, non-zero values, update frequency, bounds, central tendency, and distribution. Use when the user wants to understand a specific datafield (e.g., "what is this field?", "how often does it update?").
Provides a comprehensive workflow for deep-diving into entire WorldQuant BRAIN datasets. Includes steps for dataset selection, field categorization, detailed description generation, and cross-platform research. Use when the user wants to "audit a dataset", "categorize fields", or "explore a new dataset".
Provides a step-by-step workflow for analyzing and explaining WorldQuant BRAIN alpha expressions. Use this when the user asks to explain a specific alpha expression, what a datafield does, or how operators work together. Includes steps for data field lookup, operator analysis, and external research.
Implements WorldQuant Brain features from an idea markdown file. Downloads dataset and generates alpha expressions defined in the idea.
| name | expression_verifier |
| description | Verify the syntax of an alpha expression irrespective of field existence. Use when checking if an alpha expression string is syntactically valid, has correct function arguments, and properly matched parentheses. |
| allowed-tools | Bash |
This skill verifies the syntax of a mathematical/logical expression using the project's ExpressionValidator.
It performs the following checks:
group_sum, rank).Note: This skill does not validate whether the data fields (variables) mentioned in the expression actually exist in the database. It only checks if they are used as valid identifiers.
To verify an expression, follow these steps:
Locate the Script: The verification script is scripts/verify_expr.py inside this skill's folder.
scripts/ might not be in the current path.%USERPROFILE%\.claude\skills\expression_verifier\scripts\verify_expr.py first..claude/skills/expression_verifier/scripts/verify_expr.py.Execute: Run the script using python. Ensure you quote the expression to handle spaces and special characters.
# Example (adjust path as needed)
python ".claude/skills/expression_verifier/scripts/verify_expr.py" "ts_rank(close, 10)"
The script outputs a JSON object.
valid is true, the expression is syntactically correct.valid is false, check the errors list for details.python scripts/verify_expr.py "rank(close) / ts_delay(open, 5)"
python scripts/verify_expr.py "rank(close, 5)" # rank only takes 1 argument usually