The library
Everything we index — ranked by what works, never by stars.
forSalesMarketingHRFinanceLegalOpsProductEngineeringDataProductivitySupportsetup≤ plug & play≤ + a key≤ multi-tool
● works · ● untested / no effect · ● hurts — every rank is measured against a no-skill baseline
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Generate contract artifacts with KilnskillLegalL2
KILN_AGENT_SKILL · Deploying Tezos contracts with validation, audit, and simulation gates before mainnet.
Analyze historiographical schoolsskillL1
historiography · Evaluating why different historians reach different conclusions about the same events.
Construct evidence-based historical argumentsskillL1
oral-history · Constructing evidence-based historical arguments with explicit thesis, evidence, and counterargument.
Evaluate historical source reliabilityskillL1
source-analysis · Interrogating a document's authorship, purpose, and reliability before deploying it as evidence.
Draft Johnny.Decimal policy evolution reportskillOpsL1
johnny-decimal-source-evolution · Interrogating a document's authorship, purpose, and reliability before deploying it as evidence.
Master fundamental cooking techniquesskillProductivityL1
food-technique-fundamentals · Substituting and improvising techniques rather than following recipes rigidly.
Build household budget and savings planskillFinanceL1
household-economics-and-budgeting · Automating or structuring a commonly needed workflow.
Normalize business process logicskillOpsL1
BLL.skill · Automating or structuring a commonly needed workflow.
Design household operating systemsskillProductivityL1
household-systems-design · Automating or structuring a commonly needed workflow.
Update project documentationskillEngineeringL1
update-docs · Automating or structuring a commonly needed workflow.
Plan weekly nutrition and mealsskillProductivityL1
nutrition-and-meal-planning · Automating or structuring a commonly needed workflow.
Manage GitHub issues and pull requestsskillEngineeringL2
github · Automating or structuring a commonly needed workflow.
Teach household skills across generationsskillProductivityL1
sustainable-household-pedagogy · Automating or structuring a commonly needed workflow.
Optimize household work motion and timeskillOpsL1
time-and-motion-in-the-home · Automating or structuring a commonly needed workflow.
Analyze cross-linguistic grammar patternsskillL1
grammar-syntax · Comparing grammar systems across languages, diagnosing learner errors rooted in L1 transfer, teaching grammatical concepts via typological contrast
Analyze Claude Code sessionsskillEngineeringL2
braintrust-analyze · Retrospective productivity review and loop-detection when debugging why a session got stuck or repeating the same tool calls
Learn languages with strategic methodsskillProductivityL1
language-learning-strategies · Designing self-directed language programs from scratch or rescuing stuck learners by repositioning strategy selection based on their actual phase
Operate automated dashboard syncskillEngineeringL2
realtime-dashboard-automation · Continuously monitoring forex swing-point signals on a public dashboard, pushing alerts to Notion, and refreshing data every 15 minutes without manual intervention
Master phonetic articulation and sound perceptionskillProductivityL1
phonetics-phonology · Teaching pronunciation at the system level, debugging intelligibility problems rooted in phonetic misconfiguration, or designing ear training that targets language-specific phoneme contrasts
Master pragmatic communication across culturesskillProductivityL1
pragmatics-communication · Building conversational fluency beyond grammar by teaching learners to decode hidden meanings, adjust formality, and navigate face-saving in their target culture
Render dynamic sites and extract contentskillEngineeringL2
Playwright_Web_Navigator · Extracting content from React/Vue/Angular single-page applications where static HTTP requests return empty or skeleton HTML
Master translation and interpretation techniquesskillProductivityL1
translation-interpretation · High-stakes translation (legal, literary, technical) where equivalence theory discipline prevents the 'invisible translator' problem of over-domestication
Send emails via Reloop APIskillSalesMarketingL2
reloop-skill.mdx · Agents that need to send bulk outreach emails reliably without manual SMTP configuration, with built-in retry and duplicate prevention
Build vocabulary retention with spaced repetitionskillProductivityL1
vocabulary-acquisition · Building efficient vocabulary progressions for any language by frequency-banding the 2,000-5,000 core word families that unlock independent reading
Design instruction using Bloom's TaxonomyskillProductivityL1
bloom-taxonomy-and-mastery · Curriculum design where instructional clarity and testable outcomes prevent fuzzy lessons and hidden assumptions about what students should learn
Apply constructivist learning design principlesskillProductivityL1
constructivism-and-schema · Diagnosing why a learner is stuck (schema mismatch vs. developmental impossibility) and engineering learning situations where disequilibrium prompts productive restructuring
Analyze real estate flip profitabilityskillFinanceL2
estate-analyze-flip · When using estate analyze flip in skill contexts.
Design deliberate practice training programsskillProductivityL1
deliberate-practice-design · When coaching skill development through structured repetition and feedback cycles.
Manage Git pull requests and branchesskillEngineeringL1
prs · When developing command-line tools in Rust with clean architecture.
Apply mindset theory to learning designskillProductivityL1
mindset-and-motivation · When scraping or crawling web content for data extraction projects.
Build experience-based learning environmentsskillProductivityL1
prepared-environment-and-experience · When improving code quality without changing functionality.
Scaffold learning using Zone of Proximal DevelopmentskillProductivityL1
zpd-and-scaffolding · When building serverless functions for CloudBase environments.
Construct and evaluate arguments logicallyskillProductivityL1
critical-argumentation · When setting and tracking organizational objectives and key results.
Identify and counter informal fallaciesskillProductivityL1
informal-fallacies · When building React applications with reusable component patterns.
Create new Figma design filesskillEngineeringProductL2
figma-create-new-file · When you need a fresh Figma file before design work or use_figma calls.
Write rigorous mathematical proofsskillProductivityL1
mathematical-proof-logic · When verifying whether a proof sequence respects formal logical rules.
Detect Cobalt Strike beacon network activityskillEngineeringL2
hunting-for-cobalt-strike-beacons · When hunting ransomware C2 infrastructure using TLS fingerprints and beacon timing.
Apply modal logic to formal reasoningskillProductivityL1
modal-logic · When distinguishing necessity from possibility, knowledge from belief, or deontic/temporal reasoning.
Master first-order predicate logicskillProductivityL1
predicate-logic · When propositional logic cannot capture quantifiers or multi-variable predicates.
Guard protected branches from unsafe operationsskillEngineeringL1
git-safety · When preventing accidental commits, pushes, or force-pushes to protected branches.
Master propositional logic and truth tablesskillProductivityL1
propositional-logic · When formalizing and mechanically checking validity of propositional arguments.
Build GraalVM native images with GradleskillEngineeringL2
build-native-image-gradle · When compiling Java applications to standalone native binaries for minimal runtime footprint.
Master iron and steel manufacturing processesskillOpsL1
iron-and-steel-processes · When understanding production routes, cost drivers, and carbon control in ferrous metallurgy.
Identify material composition and microstructureskillEngineeringL1
materials-characterization · When you need to identify material phases, measure microstructure, or diagnose failure root cause.
Select optimal materials for design constraintsskillEngineeringL1
materials-selection · When choosing among thousands of candidates under competing objectives like mass and cost.
Create and manage reusable scriptsskillEngineeringL1
scripts · When automating project-specific tasks or orchestrating build and deployment workflows.
Engineer high-strength nonferrous alloysskillEngineeringL1
nonferrous-alloys · When designing with aluminum, copper, titanium, or nickel-base alloys and need property guidance.
Diagnose structural material failuresskillEngineeringL1
structural-failure-analysis · When investigating unexpected fracture, corrosion, or deformation failures in engineered components.
Solve symbolic and algebraic equationsskillEngineeringL1
algebraic-reasoning · When solving symbolic equations, manipulating expressions, or proving algebraic identities.
Remove stale local git branchesskillEngineeringL1
ce-clean-gone-branches · When pruning local and remote Git branches to reduce repository clutter after merges.