Research skills
Browse reusable Agent Skills, each with a clear purpose and practical guidance.
startup-competitors
Deep competitive intelligence for any market. Analyzes competitors' products, pricing, customer sentiment, GTM strategy, and growth signals using real web data. Produces battle cards, pricing landscape, and feature matrix. Use when the user wants to understand their competitive landscape, analyze competitors, compare products in a market, or research who they're competing against. Triggers for "who are my competitors", "competitive analysis", "competitor research", "battle cards", "pricing comparison", "competitor pricing", "market players", "competitive intelligence", "competitive landscape", "who else is in this space", "competitive moat", or any request to profile, compare, or map competitors in a category. Works standalone — no prior startup-design session needed.
annotated-bibliography
Creates annotated bibliography entries with summary, evaluation, and relevance notes for learners compiling research sources. Produces complete annotated entries -- not a guide on what annotated bibliographies are. Use when a learner asks to create an annotated bibliography, write source annotations, summarize and evaluate sources for a research project. Do NOT use for finding sources (use `literature-search`), for evaluating single sources (use `source-evaluation`), or for citation formatting only (use `citation-management`).
art-critic
Art analysis and appreciation guide covering art movements, visual analysis frameworks, critique methodology, museum guidance, art history timelines, collecting basics, and terminology to help users understand, discuss, and appreciate visual art. Use when the user asks about art critic, or needs help with art analysis and appreciation guide covering art movements, visual analysis frameworks, critique methodology, museum guidance, art history timelines, collecting basics, and terminology to help users understand, discuss, and appreciate visual art. Do NOT use when the request requires professional specialized advice or falls outside the scope of art critic.
ballot-measure-analyzer
Breaks down ballot measures into plain language, explaining what the measure proposes, who supports and opposes it, the fiscal impact, and how to evaluate the arguments on each side. Teaches users to dissect ballot language, identify stakeholders, and understand fiscal notes without recommending which way to vote. Use when the user wants to understand a ballot measure, proposition, or referendum, needs help reading ballot language, or wants to evaluate the fiscal impact of a ballot measure. Do NOT use for recommending how to vote, analyzing candidates, interpreting election results, or providing campaign strategy.
book-summarizer
Book summary and key takeaways guide covering summary structure, speed reading techniques, connecting ideas across books, reading list curation, book club discussion guides, and the Zettelkasten note-taking method for extracting lasting value from reading. Use when the user asks about book summarizer, or needs help with book summary and key takeaways guide covering summary structure, speed reading techniques, connecting ideas across books, reading list curation, book club discussion guides, and the zettelkasten note-taking method for extracting lasting value from reading. Do NOT use when the request requires professional specialized advice or falls outside the scope of book summarizer.
book-summary
Creates analytical book summaries with key ideas, core arguments, notable quotes, and application notes for learners. Produces a structured reading summary that captures the book's contribution -- not a book report or review. Use when a learner asks to summarize a book, extract key ideas from a reading, create reading notes, or synthesize a book's main arguments. Do NOT use for academic literature reviews (use `literature-search`), for note taking during reading (use `cornell-notes`), or for annotated bibliographies (use `annotated-bibliography`).
causal-inference-practitioner
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 use when the request is outside the scope of causal inference practitioner or requires a different specialized skill.
citizen-science
Guide to participating in citizen science projects including bird counting, water quality monitoring, galaxy classification, species tracking, and data collection methodology. Use when the user asks about citizen science or needs help with related topics. Do NOT use for unrelated domains or when a more specialized skill exists.