Coordinates parallel investigation threads to simultaneously explore multiple hypotheses or root causes across different system areas. Use when debugging production incidents, slow API performance, multi-system integration failures, or complex bugs where the root cause is unclear and multiple plausible theories exist; when serial troubleshooting is too slow; or when multiple investigators can divide root-cause analysis work. Provides structured phases for problem decomposition, thread assignment, sync points with Continue/Pivot/Converge decisions, and final report synthesis.

Debug LLM applications using the Phoenix CLI. Fetch traces, spans, and sessions, annotate them, analyze errors, inspect datasets, review experiments, query annotation configs, and use the GraphQL API. Use whenever the user works with a Phoenix instance from the terminal.

Comprehensive guide for BlazeMeter Functional Testing, including GUI Functional Tests, API Tests (deprecated), Action Library, and debugging. Use when working with Functional Testing for (1) Creating GUI Functional Tests (YAML, Java IDE, Python IDE), (2) Managing Functional Tests (duplicate, delete, move, rename), (3) Using test data in Functional Tests, (4) Working with Action Library, (5) Debugging Functional Tests, (6) Understanding browser support, or any other Functional Testing tasks. Note - API Functional Tests are deprecated in favor of API Monitoring.

Review and refactor code in your project according to defined instructions

Build a Total Addressable Market list by sourcing accounts and contacts from providers like Crustdata, Dropleads, and PDL.

Handles difficult colleagues and resolves conflicts using frameworks from Anneka Gupta and workplace dynamics research. Use when dealing with blocking colleagues, toxic dynamics, or maintaining relationships under stress.

Audit UI implementations against Nielsen's 10 Usability Heuristics for User Interface Design. Produces a structured issue log with severity ratings, heuristic mappings, and remediation guidance. Use when conducting heuristic evaluations, reviewing UI code for usability compliance, or auditing existing interfaces.

Define typed attributes backed by JSON fields in Rails models. Use when models need flexible data storage with type casting, validations, and form integration. Supports integer, decimal, string, text, boolean, date, and array types.

This skill should be used when the user asks to "compare code", "compare worktrees", "compare solutions", "which solution is better", "compare branches", "best of", "diff worktrees", "evaluate solutions", "pick the better implementation", "compare implementations", "review both solutions", or wants a structured, criteria-driven comparison of code across two git worktrees. Also triggered by the /best-of command.

Teamleader integration. Manage Deals, Persons, Organizations, Leads, Projects, Pipelines and more. Use when the user wants to interact with Teamleader data.

SARE integration. Manage Persons, Organizations, Deals, Leads, Projects, Activities and more. Use when the user wants to interact with SARE data.

Rockset integration. Manage Collections, Queries, Views, Workspaces. Use when the user wants to interact with Rockset data.

Qntrl integration. Manage Organizations, Pipelines, Users, Goals, Filters. Use when the user wants to interact with Qntrl data.

Pendo integration. Manage Guides, Segments, Pages, Features, Feedbacks, Polls. Use when the user wants to interact with Pendo data.

OnePageCRM integration. Manage Leads, Contacts, Users, Pipelines, Filters. Use when the user wants to interact with OnePageCRM data.

Moskit integration. Manage Organizations, Activities, Notes, Files, Pipelines, Users and more. Use when the user wants to interact with Moskit data.

Fenergo integration. Manage data, records, and automate workflows. Use when the user wants to interact with Fenergo data.

Feedier integration. Manage Surveys, Integrations, Users. Use when the user wants to interact with Feedier data.

Chatrace integration. Manage data, records, and automate workflows. Use when the user wants to interact with Chatrace data.

Add, update, list, search, or inspect Things 3 todos, inbox, today, projects, areas, and tags on macOS.