gRPC client development patterns for Braiins OS miners - connection pooling, retry logic, stream handling, and error recovery

Expert guidance for GRPO/RL fine-tuning with TRL for reasoning and task-specific model training

Use gspace CLI and MCP tools for Google Workspace operations (Drive, Gmail, Docs, Sheets, Calendar, Tasks). Use when working with Google Workspace URLs (docs.google.com, drive.google.com, sheets.google.com, slides.google.com, mail.google.com), Google Drive file IDs, or any Google Workspace file/email/calendar operations. Supports both CLI commands (via Bash) and 40+ MCP tools.

Implements onboarding and help systems including product tours, interactive tutorials, tooltips, checklists, help panels, and progressive disclosure patterns. Use when building first-time experiences, feature discovery, guided walkthroughs, contextual help, setup flows, or user activation features. Provides timing strategies, accessibility patterns (keyboard, screen readers, reduced motion), and metrics for measuring onboarding success.

Integrate with Home Assistant REST and WebSocket APIs. Use when making API calls, managing entity states, calling services, subscribing to events, or setting up authentication. Activates on keywords REST API, WebSocket, API endpoint, service call, access token, Bearer token, subscribe_events.

Comprehensive toolkit for fetching, searching, analyzing, and monitoring Hacker News content. Use when Claude needs to interact with Hacker News for (1) Fetching top/new/best/ask/show/job stories, (2) Searching for specific topics or keywords, (3) Monitoring specific users or tracking their activity, (4) Analyzing trending topics and patterns, (5) Getting story details, comments, or user profiles, or (6) Any other task involving Hacker News data retrieval or analysis.

Provide foundational knowledge of hacking concepts, network protocols, attack methodologies, and security tools. This skill covers essential theory for aspiring penetration testers and security profes

Runs performance benchmarks for SDL3 HammerEngine and detects regressions by comparing metrics against baseline. Use when testing performance-sensitive changes to AI, collision, pathfinding, particle systems, or before merging features to ensure no performance degradation.

Generates complete test suite infrastructure (test scripts, functional tests, benchmark tests, output directories, CMake integration) for a new SDL3 HammerEngine system or manager following project conventions. Use when adding a new manager or system that needs testing infrastructure.

Hanami framework workflow guidelines. Activate when working with Hanami projects, Hanami CLI, or Hanami-specific patterns.

Sync central handbook from ~/.claude/AmplifyHandbook/ to current project's resources/handbook/

You are a documentation specialist responsible for creating clear, welcoming,

Prisma-specific database operations handler

Bitbucket source control handler centralizing Git CLI and Bitbucket API operations with protected branch safety

GitHub source control handler centralizing Git CLI and GitHub API operations with protected branch safety

GitLab source control handler centralizing Git CLI and GitLab API operations with protected branch safety

Google Cloud Storage handler for fractary-file plugin

Google Drive storage handler for fractary-file plugin

Local filesystem storage handler for fractary-file plugin

Cloudflare R2 storage handler for fractary-file plugin

AWS S3 storage handler for fractary-file plugin

GitHub-specific sync mechanism - file copying, pattern matching, and safety checks

[DEPRECATED] Jira Cloud handler - Use Fractary CLI instead

Expert Harbor container registry administrator specializing in registry operations, vulnerability scanning with Trivy, artifact signing with Notary, RBAC, and multi-region replication. Use when managing container registries, implementing security policies, configuring image scanning, or setting up disaster recovery.

Hardware and embedded security research capabilities. Interface with JTAG debuggers, analyze SPI/I2C communications, dump and analyze firmware, support fault injection, side-channel analysis, and hardware exploitation research.

Harness CI (Continuous Integration) for container-native builds, test intelligence, caching, parallelization, and build infrastructure management. Activate for build pipelines, CI steps, test automation, artifact publishing, and build optimization.

Run WaveCap-SDR test harness with automated parameter sweeps and validation. Use when regression testing, validating audio quality across configurations, testing SDR hardware, or benchmarking demodulation performance.

Testing orchestrator for autonomous harness. Runs comprehensive tests (unit, integration, E2E), coordinates with validation systems, and reports results to Archon. Supports browser automation via Playwright MCP. Use when verifying features, running test suites, or validating code changes.

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Harting industrial connector MPN encoding patterns, series decoding, and handler guidance. Use when working with Harting Han, M12, M8, har-bus, or har-flex connectors.

haskell-diagrams - Declarative Vector Graphics with Diagrams DSL

Prepare and lead difficult conversations as a manager/leader and produce a Difficult Conversation Pack (conversation brief, talk track/script, objection+emotion handling plan, follow-up note, and quality gates). Use for difficult conversation, hard conversation, tough feedback, performance conversation, promotion denial, layoff conversation, termination conversation, firing. Category: Leadership.

Fix incorrect SKILL.md files when a skill has wrong instructions or outdated API references

health-record-assistant

General healthcare UX standards for Hospital Information Systems (HIS), EMR/EHR, clinic management, and patient portals. WCAG 2.2 Level AA compliant with US/International regulatory alignment (HHS Section 504, ADA, Section 508, EN 301 549, NHS Digital). Covers accessibility, patient safety language, and healthcare-specific design patterns. Auto-activates for healthcare UI design, form validation, error messaging, clinical workflows, and patient-facing interfaces.

HealthSim generates realistic synthetic healthcare data for testing EMR systems, claims processing, pharmacy benefits, and analytics. Use for ANY request involving: (1) synthetic patients, clinical data, or medical records, (2) healthcare claims, billing, or adjudication, (3) pharmacy prescriptions, formularies, or drug utilization, (4) HL7v2, FHIR, X12, or NCPDP formatted output, (5) healthcare testing scenarios or sample data generation.

hecras_compute_rascontrol

A simple introductory skill that demonstrates basic OpenCode skill functionality and provides a starting template

helm-chart-architect

Helm chart development and management for Vigil Guard v2.0.0. Use when creating Vigil Guard Helm charts, managing chart dependencies for 11 services including heuristics and semantic subcharts, configuring values for different environments, or publishing charts to repositories.

Helm chart development patterns for packaging and deploying Kubernetes applications. Use when creating reusable Helm charts, managing multi-environment deployments, or building application catalogs for Kubernetes.

Helm chart development workflow including chart structure, values management, testing, linting, and publishing for EKS deployments with Keycloak integration

Build software using isolated container-use environments with SpecKit workflow. Use when user needs to build a feature, application, or complex task that benefits from spec-driven development. Keywords: build, create, implement, feature, app, application, spec, plan, hermetic, isolated, dagger.

Toolkit for creating and managing server clusters on Hetzner Cloud using Terraform. Use this skill when users request deploying VMs, creating test infrastructure, or setting up server clusters on Hetzner Cloud. The skill provides Terraform templates optimized for network testing with strict firewall rules, public and private network interfaces, and support for ZeroTier VPN.

Use this skill when the user wants to build tool/scripts or achieve a task where using data from the Hugging Face API would help. This is especially useful when chaining or combining API calls or the task will be repeated/automated. This Skill creates a reusable script to fetch, enrich or process data.

Hilt dependency injection library for Android. Use for Android DI, Dagger integration, component hierarchy, ViewModel injection, testing with Hilt, and compile-time dependency injection.

Invoke HISTORIAN for session documentation, historical records, and continuity. Creates human-readable narratives for non-technical stakeholders. Not invoked for routine work - only for poignant, significant sessions.

[Task Mgmt] A Skill that logs completed tasks to Docs/History/History_yyMMdd.md as a Markdown table in Korean. Use this when a task or subtask has been completed and the user wants to record the completion time, task title, and a short Korean retrospective line into the History file for that date. (user)

Check progress of running Hive tests and update documentation with estimates.

Build and run Hive integration tests. Use when you need to test Ethereum clients using Hive's simulation framework.