Overview

This skill provides tools to manage datasets on the Hugging Face Hub with a focus on creation, configuration, content management, and SQL-based data manipulation. It is designed to complement the existing Hugging Face MCP server by providing dataset editing and querying capabilities.

When to Use

• You need to create, configure, or update datasets on the Hugging Face Hub.
• You want SQL-style querying, transformation, or export flows over Hub datasets.
• You are managing dataset content and metadata directly rather than only searching existing datasets.

Integration with HF MCP Server

• Use HF MCP Server for: Dataset discovery, search, and metadata retrieval
• Use This Skill for: Dataset creation, content editing, SQL queries, data transformation, and structured data formatting

Version

2.1.0

Dependencies

This skill uses PEP 723 scripts with inline dependency management

Scripts auto-install requirements when run with: uv run scripts/script_name.py

• uv (Python package manager)
• Getting Started: See "Usage Instructions" below for PEP 723 usage

Core Capabilities

1. Dataset Lifecycle Management

• Initialize: Create new dataset repositories with proper structure
• Configure: Store detailed configuration including system prompts and metadata
• Stream Updates: Add rows efficiently without downloading entire datasets

2. SQL-Based Dataset Querying (NEW)

Query any Hugging Face dataset using DuckDB SQL via scripts/sql_manager.py:

• Direct Queries: Run SQL on datasets using the hf:// protocol
• Schema Discovery: Describe dataset structure and column types
• Data Sampling: Get random samples for exploration
• Aggregations: Count, histogram, unique values analysis
• Transformations: Filter, join, reshape data with SQL
• Export & Push: Save results locally or push to new Hub repos

3. Multi-Format Dataset Support

Supports diverse dataset types through template system:

• Chat/Conversational: Chat templating, multi-turn dialogues, tool usage examples
• Text Classification: Sentiment analysis, intent detection, topic classification
• Question-Answering: Reading comprehension, factual QA, knowledge bases
• Text Completion: Language modeling, code completion, creative writing
• Tabular Data: Structured data for regression/classification tasks
• Custom Formats: Flexible schema definition for specialized needs

4. Quality Assurance Features

• JSON Validation: Ensures data integrity during uploads
• Batch Processing: Efficient handling of large datasets
• Error Recovery: Graceful handling of upload failures and conflicts

Usage Instructions

The skill includes two Python scripts that use PEP 723 inline dependency management:

All paths are relative to the directory containing this SKILL.md file. Scripts are run with: uv run scripts/script_name.py [arguments]

• scripts/dataset_manager.py - Dataset creation and management
• scripts/sql_manager.py - SQL-based dataset querying and transformation

Prerequisites

• uv package manager installed
• HF_TOKEN environment variable must be set with a Write-access token

SQL Dataset Querying (sql_manager.py)

Query, transform, and push Hugging Face datasets using DuckDB SQL. The hf:// protocol provides direct access to any public dataset (or private with token).

Quick Start

# Query a dataset
uv run scripts/sql_manager.py query \
  --dataset "cais/mmlu" \
  --sql "SELECT * FROM data WHERE subject='nutrition' LIMIT 10"

# Get dataset schema
uv run scripts/sql_manager.py describe --dataset "cais/mmlu"

# Sample random rows
uv run scripts/sql_manager.py sample --dataset "cais/mmlu" --n 5

# Count rows with filter
uv run scripts/sql_manager.py count --dataset "cais/mmlu" --where "subject='nutrition'"

SQL Query Syntax

Use data as the table name in your SQL - it gets replaced with the actual hf:// path:

-- Basic select
SELECT * FROM data LIMIT 10

-- Filtering
SELECT * FROM data WHERE subject='nutrition'

-- Aggregations
SELECT subject, COUNT(*) as cnt FROM data GROUP BY subject ORDER BY cnt DESC

-- Column selection and transformation
SELECT question, choices[answer] AS correct_answer FROM data

-- Regex matching
SELECT * FROM data WHERE regexp_matches(question, 'nutrition|diet')

-- String functions
SELECT regexp_replace(question, '\n', '') AS cleaned FROM data

Common Operations

1. Explore Dataset Structure

# Get schema
uv run scripts/sql_manager.py describe --dataset "cais/mmlu"

# Get unique values in column
uv run scripts/sql_manager.py unique --dataset "cais/mmlu" --column "subject"

# Get value distribution
uv run scripts/sql_manager.py histogram --dataset "cais/mmlu" --column "subject" --bins 20

2. Filter and Transform

# Complex filtering with SQL
uv run scripts/sql_manager.py query \
  --dataset "cais/mmlu" \
  --sql "SELECT subject, COUNT(*) as cnt FROM data