UltronCore
- 557 skills
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- 6 hours ago last updated
- ▌ Container Security · ultroncoreHarden Docker containers and Kubernetes workloads against common attack vectors. Covers image scanning with Trivy, distroless base images, non-root containers, seccomp/AppArmor profiles, Pod Security Standards, network policies, and supply chain security with SLSA.
- ▌ Swiftui View Refactor · ultroncore bundleRefactor and review SwiftUI view files with strong defaults for small dedicated subviews, MV-over-MVVM data flow, stable view trees, explicit dependency injection, and correct Observation usage. Use when cleaning up a SwiftUI view, splitting long bodies, removing inline actions or side effects, reducing computed `some View` helpers, or standardizing `@Observable` and view model initialization patterns.
- ▌ Web Artifacts Builder · ultroncore bundleSuite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.
- ▌ Ubiquitous Language · ultroncore bundleExtract a DDD-style ubiquitous language glossary from the current conversation, flagging ambiguities and proposing canonical terms. Saves to UBIQUITOUS_LANGUAGE.md. Use when user wants to define domain terms, build a glossary, harden terminology, create a ubiquitous language, or mentions "domain model" or "DDD".
- ▌ LLM Caching Strategies · ultroncoreImplement prompt caching, semantic caching, and response memoization for LLM applications to reduce latency and API costs by 50-90%. Covers Anthropic prompt caching, Redis semantic cache, exact-match caching, and cache invalidation strategies.
- ▌ Ml Feature Engineering · ultroncoreDesign and implement ML feature engineering pipelines — numerical and categorical encoding, text/embedding features, temporal features, feature selection with mutual information and SHAP, scikit-learn pipelines, and feature store serving for training/inference consistency.
- ▌ Claude Md Improver · ultroncore bundleAudit and improve CLAUDE.md files in repositories. Use when user asks to check, audit, update, improve, or fix CLAUDE.md files. Scans for all CLAUDE.md files, evaluates quality against templates, outputs quality report, then makes targeted updates. Also use when the user mentions "CLAUDE.md maintenance" or "project memory optimization".
- ▌ Raycast Extensions · ultroncore bundleBuild Raycast extensions using the Raycast API: commands, list views, forms, and preferences. Triggers on: Raycast, @raycast/api, raycast extension, raycast command, showToast, List.Item, Action.
- ▌ Slack Gif Creator · ultroncore bundleKnowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."
- ▌ Shopify Integration · ultroncore bundleShopify Storefront API, Admin API, and headless commerce with Next.js. Triggers on: Shopify, Storefront API, shopify_storefront, Admin API, Shopify SDK, storefront access token, graphql shopify.
- ▌ Vercel Advanced · ultroncore bundleVercel advanced features: Edge Runtime, ISR/PPR, preview deployments, Analytics, and environment management. Triggers on: Vercel, ISR, revalidatePath, revalidateTag, Edge Runtime, unstable_cache, prerender, PPR, vercel.json.
- ▌ Drizzle Orm · ultroncore bundleDrizzle ORM type-safe SQL queries, schema definition, migrations, and Supabase/Postgres integration. Triggers on: drizzle-orm, drizzle, pgTable, mysqlTable, eq(), and(), drizzle migrate, drizzle-kit, schema.ts drizzle.
- ▌ Data Quality Validation · ultroncoreImplement data quality checks using Great Expectations, dbt tests, Pandera, Pydantic, and SQL constraints. Covers schema validation, statistical tests, anomaly detection, and alerting.
- ▌ Moonrepo Build System · ultroncoreUse moon for task orchestration, toolchain management, and project graph in polyglot monorepos
- ▌ Firecrawl Agent · ultroncore bundleAI-powered autonomous data extraction that navigates complex sites and returns structured JSON. Use this skill when the user wants structured data from websites, needs to extract pricing tiers, product listings, directory entries, or any data as JSON with a schema. Triggers on "extract structured data", "get all the products", "pull pricing info", "extract as JSON", or when the user provides a JSON schema for website data. More powerful than simple scraping for multi-page structured extraction.
- ▌ Firecrawl Crawl · ultroncore bundleBulk extract content from an entire website or site section. Use this skill when the user wants to crawl a site, extract all pages from a docs section, bulk-scrape multiple pages following links, or says "crawl", "get all the pages", "extract everything under /docs", "bulk extract", or needs content from many pages on the same site. Handles depth limits, path filtering, and concurrent extraction.
- ▌ IOS Swiftui · ultroncore bundleExpert SwiftUI development skill for building iOS apps. Covers layout system (VStack/HStack/ZStack/Grid/LazyStacks), state management (@State/@Binding/@Observable/@Environment), navigation (NavigationStack/NavigationSplitView), animations (springs/transitions/matchedGeometryEffect/PhaseAnimator/KeyframeAnimator), lists and scroll views, sheets/alerts/popovers, custom ViewModifiers and ViewBuilders, SwiftUI lifecycle, performance optimization, and UIKit interop. Use this skill whenever the user builds SwiftUI views, layouts, navigation, animations, or asks about SwiftUI state management, view lifecycle, or performance. Triggers on any SwiftUI-related work including: SwiftUI, View, @State, @Binding, @Observable, NavigationStack, List, ScrollView, sheet, alert, animation, transition, ViewModifier, @ViewBuilder, GeometryReader, LazyVStack, TabView, toolbar, searchable, AsyncImage, or any iOS UI development with Swift.
- ▌ Swiftui Navigation · ultroncore bundleSwiftUI NavigationStack deep linking, programmatic navigation, routing patterns, and tab coordination for iOS 16+. Triggers on: NavigationStack, NavigationPath, navigationDestination, deep link, universal link, .navigationDestination(isPresented:), programmatic navigation, sheet coordination.
- ▌ Analytics Tracking · ultroncore bundleWhen the user wants to set up, improve, or audit analytics tracking and measurement. Also use when the user mentions "set up tracking," "GA4," "Google Analytics," "conversion tracking," "event tracking," "UTM parameters," "tag manager," "GTM," "analytics implementation," "tracking plan," "how do I measure this," "track conversions," "attribution," "Mixpanel," "Segment," "are my events firing," or "analytics isn't working." Use this whenever someone asks how to know if something is working or wants to measure marketing results. For A/B test measurement, see ab-test-setup.
- ▌ Core Web Vitals · ultroncore bundleOptimize Next.js Core Web Vitals (LCP, CLS, INP/FID) and Lighthouse scores. Triggers on: LCP, CLS, INP, Lighthouse score, Core Web Vitals, next/image, font optimization, layout shift, performance budget.
- ▌ System Builder · ultroncore bundleUse when the user's request can produce a reusable system, skill, workflow, or execution-ready output — not just an answer. Apply as default operating mode for all non-trivial tasks.
- ▌ Ceo Advisor · ultroncore bundleExecutive leadership guidance for strategic decision-making, organizational development, and stakeholder management. Use when planning strategy, preparing board presentations, managing investors, developing organizational culture, making executive decisions, fundraising, or when user mentions CEO, strategic planning, board meetings, investor updates, organizational leadership, or executive strategy.
- ▌ Cto Advisor · ultroncore bundleTechnical leadership guidance for engineering teams, architecture decisions, and technology strategy. Use when assessing technical debt, scaling engineering teams, evaluating technologies, making architecture decisions, establishing engineering metrics, or when user mentions CTO, tech debt, technical debt, team scaling, architecture decisions, technology evaluation, engineering metrics, DORA metrics, or technology strategy.
- ▌ Executing Plans · ultroncoreUse when you have a written implementation plan to execute in a separate session with review checkpoints
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- ▌ Gha Security Review · ultroncore bundleGitHub Actions security review for workflow exploitation vulnerabilities. Use when asked to "review GitHub Actions", "audit workflows", "check CI security", "GHA security", "workflow security review", or review .github/workflows/ for pwn requests, expression injection, credential theft, and supply chain attacks. Exploitation-focused with concrete PoC scenarios.
- ▌ Yara Rule Authoring · ultroncore bundleDevelop YARA rules for malware detection, threat hunting, and file classification across malware families and attack tools.
- ▌ Form Generator Rhf Zod · ultroncore bundleThis skill should be used when generating React forms with React Hook Form, Zod validation, and shadcn/ui components. Applies when creating entity forms, character editors, location forms, data entry forms, or any form requiring client and server validation. Trigger terms include create form, generate form, build form, React Hook Form, RHF, Zod validation, form component, entity form, character form, data entry, form schema.
- ▌ Swiftui Empty App Init · ultroncore bundleInitialize a minimal SwiftUI iOS app in the current directory by generating a single `.xcodeproj` with XcodeGen (no workspaces, packages, or tests unless explicitly requested).
- ▌ Tufte Report · ultroncore bundleCreate Tufte-inspired data reports and infographic dashboards as standalone HTML files. Uses EB Garamond for text, Monaspace Argon for numbers, Chart.js for interactive charts, and inline SVG sparklines. Produces publication-quality reports with 2-column narrative+data layouts, status dashboards, scroll animations, and responsive mobile support. Use this skill whenever the user wants to create a data report, activity dashboard, infographic, personal analytics page, health tracker visualization, or any document that combines narrative text with interactive charts and tables. Also triggers for "make a report like Tufte", "create an infographic", "build a dashboard", "visualize my data", or requests for beautiful data-driven documents.
- ▌ Huggingface LLM Trainer · ultroncore bundleTrain or fine-tune language and vision models using TRL (Transformer Reinforcement Learning) or Unsloth with Hugging Face Jobs infrastructure. Covers SFT, DPO, GRPO and reward modeling training methods, plus GGUF conversion for local deployment. Includes guidance on the TRL Jobs package, UV scripts with PEP 723 format, dataset preparation and validation, hardware selection, cost estimation, Trackio monitoring, Hub authentication, model selection/leaderboards and model persistence. Use for tasks involving cloud GPU training, GGUF conversion, or when users mention training on Hugging Face Jobs without local GPU setup.
- ▌ Streaming LLM Responses · ultroncoreImplement streaming LLM responses with server-sent events (SSE), WebSockets, and proper backpressure handling. Covers Anthropic/OpenAI streaming APIs, Next.js streaming routes, React streaming UI with useChat, and production patterns for real-time token delivery.
- ▌ Obsidian Automation · ultroncore bundleAutomate Obsidian vault operations: Templater, Dataview queries, QuickAdd, plugin APIs, and shell-based vault management. Triggers on: Obsidian, templater, dataview, QuickAdd, obsidian vault, obsidian plugin, .md frontmatter YAML.
- ▌ Testing Next Stack · ultroncore bundleScaffolds comprehensive testing setup for Next.js applications including Vitest unit tests, React Testing Library component tests, Playwright E2E flows, accessibility testing via axe-core, and CI accessibility gates with PR reporting. Use when setting up test infrastructure, generating test files, adding accessibility checks, configuring A11y CI pipelines, or adding WCAG compliance gates to pull requests. Trigger terms include setup testing, scaffold tests, vitest, RTL, playwright, e2e tests, component tests, unit tests, accessibility testing, a11y tests, axe-core, a11y ci, wcag ci, accessibility pipeline, accessibility reports.
- ▌ GRAPHQL Subscriptions · ultroncoreImplement real-time GraphQL subscriptions using WebSockets, Server-Sent Events, and Pub/Sub backends. Covers Apollo Server, graphql-ws, Pothos schema builder, Redis Pub/Sub, and React client integration with live query invalidation patterns.
- ▌ Kafka Event Streaming · ultroncoreDesign and implement event-driven architectures with Apache Kafka. Covers producers, consumers, consumer groups, schema registry, Kafka Streams, and deployment patterns.
- ▌ Blue Green Deployments · ultroncoreImplement zero-downtime blue-green deployments using Kubernetes, AWS, and GitHub Actions. Covers traffic switching, smoke tests, automated rollback, canary graduation, and database migration strategies compatible with blue-green.
- ▌ Firecrawl Scrape · ultroncore bundleExtract clean markdown from any URL, including JavaScript-rendered SPAs. Use this skill whenever the user provides a URL and wants its content, says "scrape", "grab", "fetch", "pull", "get the page", "extract from this URL", or "read this webpage". Handles JS-rendered pages, multiple concurrent URLs, and returns LLM-optimized markdown. Use this instead of WebFetch for any webpage content extraction.
- ▌ Firecrawl Search · ultroncore bundleWeb search with full page content extraction. Use this skill whenever the user asks to search the web, find articles, research a topic, look something up, find recent news, discover sources, or says "search for", "find me", "look up", "what are people saying about", or "find articles about". Returns real search results with optional full-page markdown — not just snippets. Provides capabilities beyond Claude's built-in WebSearch.
- ▌ Paywall Upgrade Cro · ultroncore bundleWhen the user wants to create or optimize in-app paywalls, upgrade screens, upsell modals, or feature gates. Also use when the user mentions "paywall," "upgrade screen," "upgrade modal," "upsell," "feature gate," "convert free to paid," "freemium conversion," "trial expiration screen," "limit reached screen," "plan upgrade prompt," "in-app pricing," "free users won't upgrade," "trial to paid conversion," or "how do I get users to pay." Use this for any in-product moment where you're asking users to upgrade. Distinct from public pricing pages (see page-cro) — this focuses on in-product upgrade moments where the user has already experienced value. For pricing decisions, see pricing-strategy.
- ▌ Csp Config Generator · ultroncore bundleThis skill should be used when the user requests to generate, create, or configure Content Security Policy (CSP) headers for Next.js applications to prevent XSS attacks and control resource loading. It analyzes the application to determine appropriate CSP directives and generates configuration via next.config or middleware. Trigger terms include CSP, Content Security Policy, security headers, XSS protection, generate CSP, configure CSP, strict CSP, nonce-based CSP, CSP directives.
- ▌ Semgrep Rule Creator · ultroncore bundleCreate custom Semgrep rules to detect project-specific vulnerability patterns and enforce security policies.
- ▌ Static Code Analysis · ultroncore bundleMulti-tool static analysis combining CodeQL, Semgrep, and other SAST tools to find security vulnerabilities across polyglot codebases.
- ▌ Huggingface Local Models · ultroncore bundleUse to select models to run locally with llama.cpp and GGUF on CPU, Mac Metal, CUDA, or ROCm. Covers finding GGUFs, quant selection, running servers, exact GGUF file lookup, conversion, and OpenAI-compatible local serving.
- ▌ LLM Fine Tuning Pipeline · ultroncoreBuild end-to-end LLM fine-tuning pipelines — dataset preparation with quality filtering, SFT training with Hugging Face Trainer and TRL, LoRA/QLoRA PEFT configuration, DPO preference optimization, evaluation with LM-Eval, and vLLM serving of fine-tuned adapters.
- ▌ Docs And Changelogs · ultroncore bundleGenerates comprehensive changelogs from Conventional Commits, maintains CHANGELOG.md files, and scaffolds project documentation like PRD.md or ADR.md. This skill should be used when creating changelogs, generating release notes, maintaining version history, documenting architectural decisions, or scaffolding project requirements documentation. Use for changelog generation, release notes, version documentation, ADR, PRD, or technical documentation.
- ▌ Cloudflare Expert · ultroncore bundleCloudflare stack: Workers, Pages, D1 database, R2 storage, KV, and Durable Objects. Triggers on: Cloudflare Workers, wrangler, D1, R2 bucket, KV namespace, Durable Objects, cloudflare pages, wrangler.toml.
- ▌ Nix Reproducible Builds · ultroncoreUse Nix and NixOS for fully reproducible development environments, CI pipelines, and deployments. Covers flake-based project setup, devShells, Nix overlays, home-manager, NixOS configuration, and building Docker images with Nix for bit-reproducible containers.
- ▌ Firecrawl Browser · ultroncore bundleDEPRECATED — use scrape + interact instead. Interact lets you scrape a page and then click, fill forms, and navigate without managing sessions manually. Use this skill when the user needs to interact with a webpage, log into a site, click buttons, fill forms, navigate multi-step flows, handle pagination, or when regular scraping fails because content requires JavaScript interaction. Triggers on "click", "fill out the form", "log in to", "paginated", "infinite scroll", "interact with the page", or "scrape failed".
- ▌ Gmail · ultroncore bundleThis skill should be used when searching, fetching, or downloading emails from Gmail. Use for queries like "search Gmail for...", "find emails from John", "show unread emails", "emails about project X", or "download attachment from email".
- ▌ LLM Observability · ultroncore bundleAdd observability, tracing, and monitoring to Claude Code skill executions. Track prompt versions, response quality, latency, and costs across runs. Use when building production Claude workflows that need debugging, performance tracking, or A/B testing of prompts. Trigger when users mention LLM observability, langfuse, prompt tracing, agentops, mlflow, or monitoring Claude calls.
- ▌ Android Development · ultroncoreBuild native Android apps with Kotlin, Jetpack Compose, and modern Android architecture. Covers Compose UI, ViewModel, Room, Retrofit, Hilt DI, Coroutines, and Play Store deployment.
- ▌ Flutter Development · ultroncoreBuild cross-platform mobile and web apps with Flutter and Dart. Covers widget composition, state management with Riverpod, navigation, platform channels, testing, and deployment.
- ▌ Marketing Psychology · ultroncore bundleWhen the user wants to apply psychological principles, mental models, or behavioral science to marketing. Also use when the user mentions 'psychology,' 'mental models,' 'cognitive bias,' 'persuasion,' 'behavioral science,' 'why people buy,' 'decision-making,' 'consumer behavior,' 'anchoring,' 'social proof,' 'scarcity,' 'loss aversion,' 'framing,' or 'nudge.' Use this whenever someone wants to understand or leverage how people think and make decisions in a marketing context.
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- ▌ Context Engineer · ultroncore bundleUse when tasks are complex, multi-step, vague, or involve debugging, building, research with execution, or skill creation — any work where wrong scope, missing inputs, or poor framing would cause drift or incorrect output. Activates automatically before execution.
- ▌ Founder Coach · ultroncore bundlePersonal leadership development for founders and first-time CEOs. Covers founder archetype identification, delegation frameworks, energy management, CEO calendar audits, leadership style evolution, blind spot identification, imposter syndrome, founder mental health, and succession planning. Use when a founder feels like the bottleneck, struggles to delegate, is burning out, transitioning from IC to executive, managing a board, or when user mentions founder mode, CEO growth, leadership development, delegation, burnout, or imposter syndrome.
- ▌ Using Superpowers · ultroncoreUse when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
- ▌ End To End Encryption · ultroncoreImplement end-to-end encryption (E2EE) for web and mobile applications using libsodium, Web Crypto API, and Signal Protocol patterns. Covers key exchange, symmetric encryption, digital signatures, sealed boxes, and key management without server-side key access.
- ▌ Zero Knowledge Proofs · ultroncoreImplement zero-knowledge proofs for privacy-preserving authentication, credential verification, and computation. Covers ZK-SNARKs with circom/snarkjs, Groth16 and PLONK proof systems, Merkle tree membership proofs, and ZK applications in Node.js and Rust.
- ▌ Tailwind Shadcn UI Setup · ultroncore bundleThis skill should be used when setting up, configuring, or initializing Tailwind CSS (v3 or v4) and shadcn/ui for Next.js 16 App Router projects. Configure dark mode, design tokens, base layout with header/sidebar, accessibility defaults, and generate example components. Includes comprehensive setup automation, theme customization, and production-ready patterns. Use when the user requests "setup Tailwind", "configure shadcn/ui", "add dark mode", "initialize design system", or "setup UI framework" for Next.js projects.
- ▌ UI Library Usage Auditor · ultroncore bundleThis skill should be used when reviewing shadcn/ui component usage to ensure accessibility, consistency, and proper patterns. Applies when auditing UI code, checking component patterns, reviewing layout structure, identifying component extraction opportunities, or ensuring design system compliance. Trigger terms include audit UI, review components, check shadcn, accessibility audit, component review, UI patterns, design system compliance, layout review, refactor components, extract component.
- ▌ UI Visual Creation Stack · ultroncore bundleUse when the task involves UI design, UX ideation, web visuals, app screens, mockups, wireframes, landing pages, design systems, component visuals, visual iteration, layout generation, redesigns, style directions, or handoff-ready design workflows. Activates automatically for any visual product work.
- ▌ Multi Agent Orchestration · ultroncoreDesign and implement multi-agent systems where specialized AI agents collaborate to complete complex tasks. Covers orchestrator-worker patterns, parallel execution, result aggregation, error recovery, agent handoffs, and production deployment with LangGraph and CrewAI.
- ▌ Ray Distributed Computing · ultroncoreBuild and scale distributed Python applications with Ray. Covers remote functions, actors, object store, Ray Data for parallel data processing, Ray Serve for model serving, and Ray Train for distributed ML training.
- ▌ Claude Settings Audit · ultroncore bundleAnalyze a repository to generate recommended Claude Code settings.json permissions. Use when setting up a new project, auditing existing settings, or determining which read-only bash commands to allow. Detects tech stack, build tools, and monorepo structure.
- ▌ Feature Flag Manager · ultroncore bundleAdds feature flag support using LaunchDarkly or JSON-based configuration to toggle features in UI components and Server Actions. This skill should be used when implementing feature flags, feature toggles, progressive rollouts, A/B testing, or gating functionality behind configuration. Use for feature flags, feature toggles, LaunchDarkly integration, progressive rollout, canary releases, or conditional features.
- ▌ Dns Infrastructure · ultroncoreDesign and manage production DNS infrastructure — zone configuration, record types (A, CNAME, MX, TXT, SRV, CAA), TTL strategy, DNSSEC signing, health-check-based failover, GeoDNS routing, and Cloudflare/Route53 Terraform automation.
- ▌ Service Mesh Istio · ultroncoreDeploy and configure Istio service mesh for Kubernetes. Covers mTLS between services, traffic management with VirtualServices/DestinationRules, observability with Kiali/Jaeger/Prometheus, circuit breaking, and zero-trust networking.
- ▌ Security Pen Testing · ultroncore bundleUse when the user asks to perform security audits, penetration testing, vulnerability scanning, OWASP Top 10 checks, or offensive security assessments. Covers static analysis, dependency scanning, secret detection, API security testing, and pen test report generation.
- ▌ GRAPHQL Expert · ultroncore bundleGraphQL API design, queries, mutations, subscriptions, and schema optimization. Triggers on: GraphQL, gql, useQuery Apollo, graphql-request, schema.graphql, resolver, subscription, GraphQL codegen.
- ▌ Mlops Engineer · ultroncore bundleBuild comprehensive ML pipelines, experiment tracking, and model registries with MLflow, Kubeflow, and modern MLOps tools.
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- ▌ Effect TS · ultroncoreBuild robust TypeScript applications using Effect-TS — a functional programming library for managing side effects, errors, concurrency, and dependencies with full type safety. Use this skill whenever the user mentions Effect, Effect-TS, functional effects in TypeScript, typed error handling, dependency injection with layers, or wants to eliminate runtime surprises through explicit effect types. Trigger for "effect library", "fp-ts alternative", "typed errors TypeScript", or any Effect ecosystem question.
- ▌ Realtime Collaboration · ultroncoreBuild real-time collaborative editing features using CRDTs (Yjs, Automerge), WebSocket broadcasting, and conflict-free merging. Covers document co-editing, cursor presence, offline sync, and integrations with Tiptap and the Hocuspocus server.
- ▌ Firecrawl Download · ultroncore bundleDownload an entire website as local files — markdown, screenshots, or multiple formats per page. Use this skill when the user wants to save a site locally, download documentation for offline use, bulk-save pages as files, or says "download the site", "save as local files", "offline copy", "download all the docs", or "save for reference". Combines site mapping and scraping into organized local directories.
- ▌ Linear · ultroncore bundleManage Linear issues, projects, and workflows via CLI. This skill should be used when the user wants to create, list, update, or search Linear issues, manage projects or milestones, or interact with their Linear workspace. Triggers on "create a task", "add a Linear issue", "list my issues", "update GLE-123", "what's in my backlog", or any Linear-related request.
- ▌ Temporal Developer · ultroncore bundleThis skill should be used when the user asks to "create a Temporal workflow", "write a Temporal activity", "debug stuck workflow", "fix non-determinism error", "Temporal Python", "Temporal TypeScript", "Temporal Go", "Temporal Golang", "workflow replay", "activity timeout", "signal workflow", "query workflow", "worker not starting", "activity keeps retrying", "Temporal heartbeat", "continue-as-new", "child workflow", "saga pattern", "workflow versioning", "durable execution", "reliable distributed systems", or mentions Temporal SDK development.
- ▌ Youtube Transcript · ultroncore bundleExtract YouTube video transcripts with metadata and save as Markdown to Obsidian vault. Use this skill when the user requests downloading YouTube transcripts, converting YouTube videos to text, or extracting video subtitles. Does not download video/audio files, only metadata and subtitles.
- ▌ Adaptive Codex Utilization · ultroncore bundleUse when deciding whether to handle a task in Claude or offload it to Codex via terminal. Activates automatically for execution-heavy tasks (terminal commands, file ops, repo scanning, batch edits, test runs, log parsing, env setup, Obsidian vault operations) and when usage efficiency matters. Routes work to the lightest sufficient tool without sacrificing quality.
- ▌ Gitnexus Pr Review · ultroncoreUse when the user wants to review a pull request, understand what a PR changes, assess risk of merging, or check for missing test coverage. Examples: "Review this PR", "What does PR #42 change?", "Is this PR safe to merge?"
- ▌ API Security Hardening · ultroncore bundleAPI security: rate limiting, authentication middleware, input validation, CORS, and common attack prevention. Triggers on: rate limit, CORS, API key, middleware auth, brute force, SQL injection, XSS, CSRF, security headers.
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- ▌ Content Research Writer · ultroncore bundleAssists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on each section. Transforms your writing process from solo effort to collaborative partnership.
- ▌ Blog Writing Guide · ultroncore bundleWrite, review, and improve blog posts for the Sentry engineering blog following Sentry's specific writing standards, voice, and quality bar. Use this skill whenever someone asks to write a blog post, draft a technical article, review blog content, improve a draft, write a product announcement, create an engineering deep-dive, or produce any written content destined for the Sentry blog or developer audience. Also trigger when the user mentions "blog post," "blog draft," "write-up," "announcement post," "engineering post," "deep dive," "postmortem," or asks for help with technical writing for Sentry. Even if the user just says "help me write about [feature/topic]" — if it sounds like it could become a Sentry blog post, use this skill.
- ▌ Mlflow Experiment Tracking · ultroncoreTrack ML experiments, manage model versions, and deploy models using MLflow. Covers experiment logging, model registry, artifact management, and serving patterns.
- ▌ Claude API Integration · ultroncore bundleIntegrate the Anthropic Claude API into any project using the official SDKs, with structured output extraction patterns. Reference for Python, TypeScript, Go implementations, tool_use for guaranteed-structured JSON, instructor library, and pydantic-ai agents. Use when building applications that call Claude directly via API. Trigger when users mention Anthropic API, Claude API, anthropic SDK, claude client, API integration, structured output, or typed responses.
- ▌ Circuit Breaker Patterns · ultroncoreImplement circuit breaker, bulkhead, and retry patterns for resilient distributed systems. Covers open/half-open/closed states, fallback strategies, and libraries for Python, Go, Node.js, and Java.
- ▌ Rust Systems Programming · ultroncoreWrite production-quality Rust code for systems, CLIs, network services, and performance-critical applications. Covers ownership patterns, async runtimes, error handling, and unsafe code.
- ▌ Distributed Tracing · ultroncoreInstrument microservices with distributed tracing using OpenTelemetry, Jaeger, and Tempo. Covers span creation, context propagation, sampling strategies, trace-to-log correlation, and building service dependency maps from trace data.
- ▌ Serverless Patterns · ultroncoreBuild production serverless applications with AWS Lambda, event-driven patterns, cold start optimization, Step Functions for orchestration, and cost-efficient architecture. Covers Lambda, SQS/SNS/EventBridge, DynamoDB, and SAM/CDK deployment.
- ▌ Error Boundary Patterns · ultroncoreBuild resilient React and Next.js UIs with error boundaries, suspense fallbacks, and structured error recovery flows. Covers class-based boundaries, react-error-boundary library, per-route boundaries, async error handling, and error reporting to Sentry.
- ▌ React Native Reanimated · ultroncoreNative-thread animations for React Native — worklets, shared values, gestures
- ▌ React Server Components · ultroncoreBuild with React Server Components (RSC) in Next.js App Router. Covers data fetching, streaming, server actions, client/server boundaries, caching strategies, and performance patterns.
- ▌ Data Orchestration · ultroncore bundleRoute data pipeline tasks — ETL, workflow orchestration, stream processing, transformation, ingestion
- ▌ Planning With Files · ultroncoreImplement persistent markdown-based planning for AI agents — the Manus-style workflow pattern where plans are written as files, executed step-by-step, and updated to reflect progress. Enables long-running reliable execution.
- ▌ Using Git Worktrees · ultroncoreUse when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktrees with smart directory selection and safety verification
- ▌ Markdown Editor Integrator · ultroncore bundleThis skill should be used when installing and configuring markdown editor functionality using @uiw/react-md-editor. Applies when adding rich text editing, markdown support, WYSIWYG editors, content editing with preview, or text formatting features. Trigger terms include markdown editor, rich text editor, text editor, add markdown, install markdown editor, markdown component, WYSIWYG, content editor, text formatting, editor preview.
- ▌ Train Sentence Transformers · ultroncore bundleTrain or fine-tune sentence-transformers models across `SentenceTransformer` (bi-encoder; dense or static embedding model; for retrieval, similarity, clustering, classification, paraphrase mining, dedup, multimodal), `CrossEncoder` (reranker; pair scoring for two-stage retrieval / pair classification), and `SparseEncoder` (SPLADE, sparse embedding model; for learned-sparse retrieval). Covers loss selection, hard-negative mining, evaluators, distillation, LoRA, Matryoshka, and Hugging Face Hub publishing. Use for any sentence-transformers training task.
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