Claude Skills by FerroxLabs

Piano and keyboard instruction covering technique, sight reading, improvisation, repertoire building, music theory at the keyboard, and structured practice methods. Use when the user asks about piano player, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of piano player or requires a different specialized skill.

Poetry creation and analysis guide covering poetic forms, meter and rhythm, imagery, sound devices, analysis frameworks, writing exercises, and modern poetry trends to help poets craft and appreciate verse at every level. Use when the user asks about poetry advisor, or needs help with poetry creation and analysis guide covering poetic forms, meter and rhythm, imagery, sound devices, analysis frameworks, writing exercises, and modern poetry trends to help poets craft and appreciate verse at ev...

Expert puppetry guidance covering puppet design, construction methods, performance technique, and voice work for hand puppets, marionettes, rod puppets, and shadow puppets Use when the user asks about puppetry creator, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of puppetry creator or requires a different specialized skill.

Screenwriting guide covering screenplay format, three-act structure, detailed beat sheets, character introduction, dialogue subtext, scene transitions, TV pilot structure, feature film pacing, logline writing, and industry standard formatting. Use when the user asks about screenwriting coach, or needs help with screenwriting guide covering screenplay format, three-act structure, detailed beat sheets, character introduction, dialogue subtext, scene transitions, tv pilot structure, feature film...

Songwriting assistant covering song structure, melody basics, lyric writing techniques, rhyme schemes, hook creation, genre-specific conventions, co-writing strategies, and demo creation to help songwriters craft memorable songs. Use when the user asks about songwriting aid, or needs help with songwriting assistant covering song structure, melody basics, lyric writing techniques, rhyme schemes, hook creation, genre-specific conventions, co-writing strategies, and demo creation to help songwri...

Expert songwriting guidance covering song structure, melody craft, lyric writing, co-writing techniques, demo recording, and navigating the music publishing landscape. Use when the user asks about songwriting coach, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of songwriting coach or requires a different specialized skill.

Expert spoken word poetry guidance covering writing techniques, performance delivery, open mic navigation, recording and publishing, slam competition strategy, and building an audience for your voice. Use when the user asks about spoken word artist, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of spoken word artist or requires a different specialized skill.

Expert stage management guidance covering production management, cue calling, technical rehearsal procedures, and essential paperwork for theater and live event production Use when the user asks about stage management guide, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of stage management guide or requires a different specialized skill.

Expert standup comedy coaching covering joke writing, timing, crowd work, open mic preparation, and set development for aspiring and working comedians Use when the user asks about standup comedy coach, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of standup comedy coach or requires a different specialized skill.

Fiction writing coach covering story structure, character development, dialogue, worldbuilding, genre conventions, and revision strategies to help writers craft compelling narratives from first draft to polished manuscript. Use when the user asks about story writer, or needs help with fiction writing coach covering story structure, character development, dialogue, worldbuilding, genre conventions, and revision strategies to help writers craft compelling narratives from first draft to polished...

Complete t-shirt design guidance covering design for print methods (DTG, screen print, sublimation), mockup creation, print-on-demand platforms (Printful, Redbubble, Merch by Amazon), niche research and market strategy, marketplace optimization, file preparation, and building a sustainable apparel design business. Use when the user asks about t shirt designer or needs help with related topics. Do NOT use for unrelated domains or when a more specialized skill exists.

Expert theater directing guidance covering blocking, casting process, vision development, and collaborative leadership for compelling stage productions Use when the user asks about theater director, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of theater director or requires a different specialized skill.

Comprehensive typography guide covering font classification and pairing, typographic hierarchy, readability and legibility principles, responsive typography, variable fonts, type in branding, web typography implementation, and developing a professional eye for type. Use when the user asks about typography master or needs help with related topics. Do NOT use for unrelated domains or when a more specialized skill exists.

Comprehensive UI design guidance covering design principles (hierarchy, whitespace, consistency), Figma workflow, design systems and component libraries, responsive design, accessibility, developer handoff, and building a portfolio with compelling case studies. Use when the user asks about ui designer or needs help with related topics. Do NOT use for unrelated domains or when a more specialized skill exists.

Chord voicings, strumming patterns, fingerpicking technique, transposition methods, and repertoire building for soprano, concert, tenor, and baritone ukulele Use when the user asks about ukulele player, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of ukulele player or requires a different specialized skill.

Vocal range development, breath support technique, tone quality improvement, performance confidence, warm-up routines, and practice methods for singers of all levels and styles Use when the user asks about vocalist trainer, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of vocalist trainer or requires a different specialized skill.

Voice acting coaching assistant covering character voice development, vocal technique, recording setup and acoustics, audition preparation, demo reel creation, industry navigation for animation, video games, audiobooks, and commercial work, plus self-direction and performance skills for voice actors at every level. Use when the user asks about voice acting coach, or needs help with voice acting coaching assistant covering character voice development, vocal technique, recording setup and acous...

Comprehensive worldbuilding assistant covering geography, cultures, languages, magic systems, ecology, history, economics, and political systems to help creators build internally consistent, deeply realized fictional worlds for novels, games, tabletop RPGs, and other creative projects. Use when the user asks about worldbuilding master, or needs help with comprehensive worldbuilding assistant covering geography, cultures, languages, magic systems, ecology, history, economics, and political sys...

Designs an A/B test from scratch. Defines the hypothesis, calculates required sample size, specifies randomization method, sets success metrics and minimum detectable effect, and produces a results interpretation template. Use when the user wants to set up a controlled experiment to test whether a change produces a measurable improvement. Do NOT use for interpreting completed test results (use hypothesis-testing), analyzing existing data without experimentation (use correlation-analysis), or ...

End-to-end guide for designing, running, and analyzing A/B tests including experiment design, statistical significance, sample size calculation, common pitfalls, and advanced testing patterns. Use when the user asks about ab testing specialist, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of ab testing specialist or requires a different specialized skill.

Produces an API data extraction design covering authentication approach, pagination strategy, rate limit handling, response parsing specification, and error handling protocol. Describes the extraction logic without writing executable code. Use when the user asks to plan data extraction from an API, design an API integration for analytics, or document how to pull data from a third-party service into a data warehouse. Do NOT use for building application-level API clients (that is software engin...

Produces a BI dashboard specification for a named business function including dashboard purpose, audience, KPIs displayed, panel layout, refresh cadence, access permissions, and alert thresholds. Outputs a complete spec ready for implementation in any BI tool. Use when the user asks to design a dashboard, create a dashboard specification, plan a BI dashboard layout, or define what should appear on a business dashboard. Do NOT use for individual KPI definitions with formulas (use kpi-definitio...

Designs a business reporting cadence with weekly, monthly, and quarterly report structures including audience, content, format, and distribution list for each. Produces report templates with section headings and chart placeholders. Use when the user asks to set up a reporting schedule, design recurring business reports, standardize report formats across teams, or define who gets what report and when. Do NOT use for dashboard design (use bi-dashboard-spec), individual KPI definition (use kpi-d...

Causal inference expertise covering A/B testing limitations and extensions, instrumental variables, difference-in-differences estimation, regression discontinuity design, directed acyclic graphs (DAGs) for causal reasoning, propensity score matching, synthetic control methods, and practical applications for measuring treatment effects in observational data. Use when the user asks about causal inference practitioner, related techniques, best practices, or needs guidance in this domain. Do NOT ...

Produces a complete chart formatting specification including axis labels, tick mark spacing, gridline density, legend placement, annotation placement, data label formatting, and title hierarchy. Eliminates chart junk while preserving the data signal. Use when the user has a chart that needs professional formatting or wants a formatting template for consistent chart styling. Do NOT use for selecting the chart type (use chart-type-selector), choosing a color palette (use color-in-data), or desi...

Determines the correct chart type for a specific data comparison by applying chart selection logic based on analytical intent (ranking, trend, distribution, composition, correlation, geographic). Produces a complete chart specification with axis assignments, color palette, labels, and formatting rules. Use when the user has data to visualize and needs to know which chart type to use or wants a full chart configuration. Do NOT use for dashboard layout with multiple charts (use dashboard-design...

Applies cohort analysis to a described dataset by defining the cohort grouping variable, time horizon, measured behavior, and producing the cohort table structure with retention calculation formulas. Outputs a populated cohort matrix, not a description of cohort analysis theory. Use when the user asks to analyze retention, track user behavior over time by signup date, compare customer groups by acquisition period, or measure how engagement changes as users age. Do NOT use for funnel conversio...

Guide for cohort-based analytics including retention analysis, customer lifetime value calculation, behavioral segmentation, funnel analysis, and time-based cohort tracking with Python and SQL implementations. Use when the user asks about cohort analyst, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of cohort analyst or requires a different specialized skill.

Applies color to data visualizations by selecting sequential, diverging, or categorical palettes based on data type. Specifies hex codes for each element, ensures colorblind accessibility with WCAG contrast ratios, and documents usage rules. Use when the user needs to choose colors for charts, dashboards, or data-driven graphics. Do NOT use for brand color palette design (use color-palette-design in the design category), chart type selection (use chart-type-selector), or chart formatting beyo...

Produces a competitive intelligence framework: defines the competitors to track, the intelligence dimensions (product, pricing, marketing, hiring), the data sources, the collection cadence, and the comparison format. Use when the user asks to track competitors, build a competitive analysis, monitor competitor activity, create a market comparison, or set up ongoing competitive intelligence gathering. Do NOT use for sentiment analysis of brand mentions (use sentiment-analysis-guide), internal p...

Produces a conditional formatting rule set for a specific use case. Specifies rule type (cell value, formula-based, color scale, data bars), criteria, color assignments with hex codes, and rule priority order. Output is the exact configuration to apply. Use when the user wants to highlight cells, create heat maps, add data bars, or visually encode data values in a spreadsheet. Do NOT use for chart color selection (use color-in-data), data validation rules (use data-validation-setup), or gener...

Produces a correlation analysis between specified variables. Computes and interprets correlation coefficients, explains the strength and direction of relationships, distinguishes correlation from causation, and identifies potential confounding variables. Use when the user wants to understand whether two or more variables move together and how strongly they are related. Do NOT use for predicting one variable from another (use regression-guide), testing whether a difference is significant (use ...

Quick techniques for cleaning CSV files - deduplication, normalization, encoding fixes, merging, and common data quality repairs using command-line tools and scripting. Use when the user asks about csv data cleaner, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of csv data cleaner or requires a different specialized skill.

Produces a complete dashboard layout specification. Defines the business questions the dashboard answers, specifies each panel (chart type, data source, title, update frequency), and maps the layout grid with sizing and positioning. Use when the user needs to design a data dashboard for monitoring metrics, KPIs, or business performance. Do NOT use for selecting a single chart type (use chart-type-selector), defining KPI metrics (use kpi-definition), or formatting individual charts (use chart-...

Guide for designing effective analytical dashboards using Metabase, Grafana, and Looker including design principles, KPI selection, layout patterns, interactivity, and stakeholder-driven dashboard strategy. Use when the user asks about dashboard designer, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of dashboard designer or requires a different specialized skill.

Produces a data catalog structure with table documentation templates, column-level lineage format, and governance tagging taxonomy. Outputs a complete catalog specification for organizing and discovering data assets across an organization. Use when the user asks to set up a data catalog, document their data assets, create a data dictionary, or establish data governance metadata standards. Do NOT use for data schema design (use data-schema-design), data quality rule definitions (use data-quali...

Generates a priority-ordered data cleaning protocol for a specific dataset. Identifies quality issues (duplicates, nulls, type mismatches, outliers) and produces the exact cleaning operations with formulas and documentation. Use when the user has a dataset with quality problems and needs a systematic plan to clean it before analysis. Do NOT use for initial data exploration (use eda-framework), statistical testing (use hypothesis-testing), or writing SQL/Python cleaning scripts (software-devel...

Designs a data pipeline monitoring plan with health metrics (latency, error rate, row count variance), alert thresholds, on-call escalation path, and incident response runbook template. Outputs a complete monitoring specification for production data pipelines. Use when the user asks to set up monitoring for data pipelines, define SLAs for data freshness, create alerting rules for ETL failures, or build a runbook for pipeline incidents. Do NOT use for designing the pipeline itself (use etl-pip...

Produces a comprehensive data profile for a table or dataset including schema documentation, data type validation, uniqueness analysis, referential integrity checks, and a data quality score with remediation priorities. Use when the user needs to document a dataset's structure and quality for onboarding, governance, or pre-analysis preparation. Do NOT use for exploratory statistical analysis (use eda-framework), data cleaning operations (use data-cleaning-protocol), or building data catalogs ...

Produces a data quality rule set defining completeness, validity, consistency, accuracy, and uniqueness rules for each field in a dataset. Includes threshold values and alert conditions for automated monitoring. Use when the user asks to define data quality checks, set up data validation rules, create a data quality framework, or establish thresholds for data integrity monitoring. Do NOT use for spreadsheet-level input validation (use data-validation-setup), ETL pipeline design (use etl-pipel...

Produces a relational or dimensional data schema with entities, attributes, data types, keys, relationships, normalization decisions with rationale, and a schema diagram description. Outputs a complete schema specification ready for implementation. Use when the user asks to design a database schema, define tables and relationships, model data entities, or plan a data structure for a new system or analytics layer. Do NOT use for data warehouse star/snowflake design (use data-warehouse-design),...

Guide for translating data analysis into compelling narratives including insight framing, presentation design, audience adaptation, and persuasive data communication techniques. Use when the user asks about data storyteller, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of data storyteller or requires a different specialized skill.

Structures a data narrative that turns analytical findings into a compelling story. Identifies the core insight, builds the evidence chain, selects supporting visualizations, and writes the narrative arc from setup through finding to implication and recommendation. Use when the user needs to present data findings to an audience in a persuasive, structured format. Do NOT use for raw data exploration (use eda-framework), choosing a chart type (use chart-type-selector), or formatting a data repo...

Produces a data validation rule set for a spreadsheet. Defines validation type (list, range, custom formula, date, text length), error message text, and input hint text for each field. Prevents data quality problems at the point of data entry. Use when the user needs to restrict what can be entered into spreadsheet cells to maintain data quality. Do NOT use for cleaning existing dirty data (use spreadsheet-data-cleaning), conditional formatting rules (use conditional-formatting-rules), or bui...

Comprehensive guide to creating effective data visualizations with matplotlib, plotly, seaborn, and D3.js including chart selection frameworks, design principles, and publication-quality output. Use when the user asks about data visualization artist, related techniques, best practices, or needs guidance in this domain. Do NOT use when the request is outside the scope of data visualization artist or requires a different specialized skill.

Designs a data warehouse structure by selecting star or snowflake schema, defining fact tables and dimension tables, specifying grain for each fact table, and producing the entity-relationship description. Outputs a complete warehouse schema specification. Use when the user asks to design a data warehouse, build a dimensional model, create fact and dimension tables, or plan an analytics schema for reporting. Do NOT use for operational database schema design (use data-schema-design), ETL pipel...

Produces a structured exploratory data analysis report covering row counts, column inventory, missing values, distributions, and frequency counts. Translates raw data into a complete EDA summary with specific findings, not generic descriptions. Use when the user has a dataset and wants to understand its structure, quality, and key characteristics before deeper analysis. Do NOT use for hypothesis testing (use hypothesis-testing), data cleaning operations (use data-cleaning-protocol), or buildi...

Designs an ETL pipeline specification covering extract (source, frequency, authentication), transform (cleaning, joins, aggregations), and load (target, format, schema). Produces a pipeline spec document describing data flow logic, not executable code. Use when the user asks to design a data pipeline, move data between systems, build an ETL or ELT workflow, or plan a data integration process. Do NOT use when building application code that happens to read a database (that is software engineeri...

Produces working Excel/Sheets lookup formulas for specific use cases. Generates exact VLOOKUP, HLOOKUP, INDEX/MATCH, and XLOOKUP formula strings with error handling wrappers, exact vs. approximate match settings, and performance guidance. Use when the user needs to look up values across spreadsheet tables, match data between sheets, or build cross-reference formulas. Do NOT use for pivot table construction (use pivot-table-builder), data cleaning formulas (use spreadsheet-data-cleaning), or c...

Builds a spreadsheet financial model structure with input, calculation, and output sections. Produces the formula architecture with assumption documentation and sensitivity analysis table. Outputs cell-ready formulas, not descriptions of what formulas to use. Use when the user needs to build a financial model, revenue projection, cost analysis, or business case in a spreadsheet. Do NOT use for personal budgeting (use budget-planning in personal-finance), business strategy analysis (use SWOT o...