Data & Analytics
Data agent skills make AI agents useful for data work: writing SQL, cleaning datasets, building pipelines, working with spreadsheets, and producing analyses. Each skill is a reviewed SKILL.md file that teaches the agent one workflow well, ready to install in seconds.
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tomevault-io Bundle Spark Engineer 2Use when building Apache Spark applications, distributed data processing pipelines, or optimizing big data workloads. Invoke for DataFrame API, Spark SQL, RDD operations, performance tuning, streaming analytics.
- tomevault-io Bundle CSV Data Summarizer 2
Analyzes CSV files, generates summary stats, and plots quick visualizations using Python and pandas.
- tomevault-io Bundle Vaex 3
Use this skill for processing and analyzing large tabular datasets (billions of rows) that exceed available RAM. Vaex excels at out-of-core DataFrame operations, lazy evaluation, fast aggregations, efficient visualization of big data, and machine learning on large datasets. Apply when users need to work with large CSV/HDF5/Arrow/Parquet files, perform fast statistics on massive datasets, create visualizations of big data, or build ML pipelines that don't fit in memory.
- tomevault-io Bundle Polars 4
Fast in-memory DataFrame library for datasets that fit in RAM. Use when pandas is too slow but data still fits in memory. Lazy evaluation, parallel execution, Apache Arrow backend. Best for 1-100GB datasets, ETL pipelines, faster pandas replacement. For larger-than-RAM data use dask or vaex. Use when this capability is needed.
- tomevault-io Bundle Migrating Dbt Project Across Platforms 2
Use when migrating a dbt project from one data platform or data warehouse to another (e.g., Snowflake to Databricks, Databricks to Snowflake) using dbt Fusion's real-time compilation to identify and fix SQL dialect differences.
- tomevault-io Bundle Django Security 10
Django安全最佳实践，身份验证，授权，CSRF保护，SQL注入预防，XSS预防和安全部署配置。 Use when this capability is needed.
- tomevault-io Bundle Ab Test Setup 2
When the user wants to plan, design, or implement an A/B test or experiment. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," or "hypothesis." For tracking implementation, see analytics-tracking. Use when this capability is needed.
- tomevault-io Bundle Django Security 11
Django安全最佳实践，身份验证，授权，CSRF保护，SQL注入预防，XSS预防和安全部署配置。 Use when this capability is needed.
- tomevault-io Bundle Ab Test Setup 4
When the user wants to plan, design, or implement an A/B test or experiment. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," or "hypothesis." For tracking implementation, see analytics-tracking. Use when this capability is needed.
- tomevault-io Bundle Django Security 13
Django security best practices, authentication, authorization, CSRF protection, SQL injection prevention, XSS prevention, and secure deployment configurations. Use when this capability is needed.
- tomevault-io Bundle Geopandas 2
Open source project to make working with geospatial data in python easier. Extends the datatypes used by pandas to allow spatial operations on geometric types. Built on top of Shapely, Fiona, and Pyproj. Use for reading and writing spatial formats (Shapefile, GeoJSON, GeoPackage, KML), performing spatial joins, coordinate system transformations (reprojecting), geometric analysis (buffers, centroids, convex hulls), thematic mapping (Choropleth maps), calculating spatial relationships (contains, overlaps, touches, within), working with OpenStreetMap data or satellite-derived vector data. Use when this capability is needed.
- tomevault-io Bundle Data Analysis 8
Comprehensive data analysis skill for CSV files using Python and pandas Use when this capability is needed.
- tomevault-io Bundle Database Schema Designer 4
Design robust, scalable database schemas for SQL and NoSQL databases. Provides normalization guidelines, indexing strategies, migration patterns, constraint design, and performance optimization. Ensures data integrity, query performance, and maintainable data models. Use when this capability is needed.
- tomevault-io Bundle Database Design 9
Designs database schemas, indexing strategies, query optimization, and migration patterns for SQL and NoSQL databases. Use when designing tables, optimizing queries, fixing N+1 problems, planning migrations, or when asked about database performance, normalization, ORMs, or data modeling. Use when this capability is needed.
- tomevault-io Bundle Database Schema Designer 2
Design optimized database schemas for SQL and NoSQL databases including tables, relationships, indexes, and constraints. Creates ERD diagrams, migration scripts, and data modeling best practices. Use when users need database design, schema optimization, or data architecture planning. Use when this capability is needed.
- tomevault-io Bundle SQL Optimization Patterns 2
Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance. Use when this capability is needed.
- tomevault-io Bundle Database Patterns 4
Database design and migration patterns for Alembic migrations, schema design (SQL/NoSQL), and database versioning. Use when creating migrations, designing schemas, normalizing data, managing database versions, or handling schema drift. Use when this capability is needed.
- tomevault-io Bundle MCP Development 3
Complete MCP development toolkit for creating, debugging, testing, and reviewing MCP servers. Use when setting up new MCP projects, creating tools, debugging connection issues, reviewing MCP code, or generating documentation. Use when this capability is needed.
- tomevault-io Bundle Spreadsheet Management 2
This skill should be used when the user asks about Google Sheets, spreadsheets, cells, rows, columns, charts, or data tables. Activates for reading, writing, formatting, or analyzing spreadsheet data. Use when this capability is needed.
- tomevault-io Bundle Logging Best Practices 3
Logging best practices focused on wide events (canonical log lines) for powerful debugging and analytics Use when this capability is needed.
- tomevault-io Bundle CSV Data Summarizer 3
Analyzes CSV files, generates summary stats, and plots quick visualizations using Python and pandas.
- tomevault-io Bundle Security 24
Enforce Elixir/Phoenix security — auth, OAuth, sessions, CSRF, XSS, SQL injection, input validation, secrets. Use when editing auth files, login flows, RBAC, or API keys. Use when this capability is needed.
- tomevault-io Bundle Kpi Dashboard Design 2
Designs effective KPI dashboards with proper metric selection, visual hierarchy, and data visualization best practices. Use when building executive dashboards, creating analytics views, or presenting business metrics. Use when this capability is needed.
- tomevault-io Bundle Doc Writing 2
技术文档工程 - Diátaxis框架 / PDF / DOCX / XLSX / PPTX 处理。Create, maintain, and structure clear technical documentation. Use when this capability is needed.
- tomevault-io Bundle Seaborn 2
Statistical visualization with pandas integration. Use for quick exploration of distributions, relationships, and categorical comparisons with attractive defaults. Best for box plots, violin plots, pair plots, heatmaps. Built on matplotlib. For interactive plots use plotly; for publication styling use scientific-visualization. Use when this capability is needed.
- tomevault-io Bundle Go Style Guide 2
Style, review, and refactoring standards for Go codebases. Trigger when `.go`, `go.mod`, `go.sum`, or `go.work` files are created, changed, or reviewed and Go-specific quality rules (error handling, concurrency patterns, interface design, package boundaries) must be enforced. Do not use for generic shell scripts, SQL-only changes, or non-Go runtime style concerns unless Go artifacts are also changed. In multi-language pull requests, run together with other applicable `*-style-guide` skills. Use when this capability is needed.
- tomevault-io Bundle Durable Objects 3
Create and review SQLite-backed Cloudflare Durable Objects. Use when building stateful coordination (chat rooms, multiplayer games, booking systems), implementing RPC methods, SQLite storage API, PITR recovery, alarms, WebSocket hibernation, service bindings, or reviewing DO code for best practices. Comprehensive coverage of SQL queries, transactions, namespace API, and testing. Use when this capability is needed.
- tomevault-io Bundle Substreams SQL 2
Expert knowledge for building SQL database sinks from Solana/SVM Substreams. Covers DatabaseChanges, ClickHouse schemas, PostgreSQL schemas, and materialized views for Solana DEX/token data. Use when this capability is needed.
- tomevault-io Bundle Database 10
Database patterns — migrations, indexes, N+1 prevention, query optimization. Triggers on database/migration/query/sql/orm keywords. Use when this capability is needed.
- tomevault-io Bundle Generate Design 2
開発作業の設計書（design.md）を生成します。このスキルは単独で使用することも、generate-working-docsから呼び出されることもあります。 Use when this capability is needed.
- tomevault-io Bundle SQL Optimization Patterns 3
Use when debugging slow queries, designing indexes, analyzing EXPLAIN output, resolving N+1 problems, or tuning database performance. Do NOT use for basic SQL, simple CRUD, or JPA entity design (use jpa-patterns).
- tomevault-io Bundle Django Security 12
Django security best practices, authentication, authorization, CSRF protection, SQL injection prevention, XSS prevention, and secure deployment configurations. Use when this capability is needed.
- tomevault-io Bundle Processing Documents 2
Processes PDF, DOCX, XLSX, and PPTX files with extraction, generation, and batch operations. Use when building document pipelines, extracting content from office files, or generating reports. Use when this capability is needed.
- tomevault-io Bundle Database 11
Database design, SQL, NoSQL, and data management Use when this capability is needed.
- tomevault-io Bundle Polars 5
Fast DataFrame library (Apache Arrow). Select, filter, group_by, joins, lazy evaluation, CSV/Parquet I/O, expression API, for high-performance data analysis workflows. Use when this capability is needed.
- tomevault-io Bundle Go Database 3
Go database operations - SQL, ORMs, transactions, migrations Use when this capability is needed.
Frequently asked questions
What are Data & Analytics agent skills?
Data agent skills make AI agents useful for data work: writing SQL, cleaning datasets, building pipelines, working with spreadsheets, and producing analyses. Each skill is a reviewed SKILL.md file that teaches the agent one workflow well, ready to install in seconds.
Which Data & Analytics skills are most installed?
Popular Data & Analytics skills on SkillMD right now include csv-data-summarizer, data-analysis, spark-engineer. Rankings shift as installs change; sort this page by "Most installs" for the live list.
Do Data & Analytics skills work with Claude Code and Cursor?
Yes. Every skill here ships as a SKILL.md file, an open format that works in Claude Code, Claude.ai, Cursor, Codex, Windsurf, and 60+ other agents. Install one with npx skillmds@latest add <owner>/<name>, or copy the file into your agent's skills directory.