**Source**: [drupalatyourfingertips.com](https://drupalatyourfingertips.com)

Drupal development tooling skill for DDEV local environments and Drush command-line operations (Drupal 8-11+). Use when working with Docker-based development environments, Drush commands, deployment workflows, or site management tasks.

- [The Iron Law of DS Brainstorming](#the-iron-law-of-ds-brainstorming)

Subagent delegation for data analysis. Dispatches fresh Task agents with output-first verification.

REQUIRED Phase 3 of /ds workflow. Enforces output-first verification at each step.

You are an expert in Direct Store Delivery (DSD) route optimization and retail distribution planning. Your goal is to help design efficient delivery routes that minimize costs while meeting strict ret

Build production-quality ReAct agents that use tools to solve complex multi-step tasks with reasoning, acting, and error handling.

dss_read_boundary-data

List all Danmarks Statistik tables currently stored in DuckDB with metadata. Use when user wants to know what data is available locally or explore stored tables.

DuckDB file discovery agent with verified absolute paths

Comprehensive DuckDB database backup toolkit supporting both file-based (cp) and native (ATTACH+COPY) backup approaches. Use when you need to backup DuckDB databases locally or to remote storage, create daily scheduled backups, verify backup integrity, or manage backup retention policies.

Use duckdb to run arbitrary SQL

' Layer 3: Temporal Versioning and ACSet Schema Generation for DuckDB'

Ergodic random walks over DuckLake lakehouses with GF(3) triadic concurrent walkers. Society-of-mind coordination for schema exploration.

Provider-agnostic wait-for-change skill that uses the Dumbwaiter MCP server to wait on PR events (GitHub first) via wait.start/status/cancel/await, with progress notifications and durable state.

Resolve duplicate purchases. Use when a customer bought the same course or license twice or was charged twice.

Writing durable workflows using Duroxide in Rust. Use when creating orchestrations, activities, workflows, or when the user mentions duroxide, durable functions, or workflow orchestration.

Manage retail menus and orders via Dutchie Plus API.

Maintain a continually updated knowledge base without forgetting; use when asked to refresh indices or manage drift.

Use when designing animations for shopping apps, product catalogs, checkout flows, or retail experiences

E-commerce platforms, payment processing, and shopping cart patterns

'World E Skill'

East Execution Engine (e3) - durable dataflow execution for East programs. Use when: (1) Authoring e3 packages with @elaraai/e3 (e3.input, e3.task, e3.package, e3.export), (2) Running e3 CLI commands (e3 init, e3 start, e3 watch, e3 get, e3 set), (3) Working with workspaces and packages, (4) Content-addressable caching and dataflow execution.

Manage EA Play subscription, game library, and access EA titles

Master orchestrator for batch earnings analysis

Predicts stock direction/magnitude at T=0 (report release). Uses PIT data only. Run before earnings-attribution.

Expert on EAS Update for over-the-air updates in Expo apps. Covers update deployment, rollouts, rollbacks, channels, branches, and runtime versions. Invoke when user mentions EAS Update, OTA updates, hot updates, update channels, or app updates without app store.

Data science and machine learning platform functions for the East language (TypeScript types). Use when writing East programs that need optimization (MADS, Optuna, SimAnneal, Scipy), machine learning (XGBoost, LightGBM, NGBoost, Torch MLP, Lightning, GP), ML utilities (Sklearn preprocessing, metrics, splits), or model explainability (SHAP). Triggers for: (1) Writing East programs with @elaraai/east-py-datascience, (2) Derivative-free optimization with MADS, (3) Bayesian optimization with Optuna, (4) Discrete/combinatorial optimization with SimAnneal, (5) Gradient boosting with XGBoost or LightGBM, (6) Probabilistic predictions with NGBoost or GP, (7) Neural networks with Torch MLP or Lightning, (8) Data preprocessing and metrics with Sklearn, (9) Model explainability with Shap.

ebfe-validator

Surface ebook ideas you didn't know you had. Use when ready to discover what ebooks might be hiding in your content, expertise, or thinking. Supports both content-rich creators (blog posts, videos, newsletters) and those with unpublished expertise. Produces a curated list of ebook candidates ready for Concept Development. Handles multi-session discovery with living documents.

AWS EC2 virtual machine management for instances, AMIs, and networking. Use when launching instances, configuring security groups, managing key pairs, troubleshooting connectivity, or automating instance lifecycle.

Control ecobee smart thermostats and sensors

economist-analyst

Guide to spences10's Claude Code ecosystem. Use when user asks which tool to use, how tools relate, or needs help choosing between MCP servers, skills, or CLIs.

View ecosystem updates, tracked repositories, and cross-project status. Use when asked about ecosystem health, repo updates, project status, or what's happening across the codebase.

AWS ECS container orchestration for running Docker containers. Use when deploying containerized applications, configuring task definitions, setting up services, managing clusters, or troubleshooting container issues.

Ghost.io Admin API CLI for managing blog posts, pages, tags, and content.

Use when defining data structures using Ecto schemas including fields, associations, embedded schemas, and schema metadata. Use for modeling domain data in Elixir applications.

Use when defining and working with Ecto schemas including field types, associations, and embedded schemas. Use when modeling database entities in Elixir.

Use when writing Ecto code. Contains insights about Contexts, DDD patterns, schemas, changesets, and database gotchas from José Valim.

Electronics project architecture and constraint definition. Guides users through defining project requirements, power systems, interfaces, and physical constraints.

PCB layout and routing. Component placement, trace routing, copper pours, design rule configuration, and layout optimization for manufacturability.

Schematic capture and wiring. Create schematic sheets, place symbols, add wires and net labels, organize hierarchical designs.

Systematic 5-category analysis for exhaustive edge case enumeration.

Analyze a PRD for edge cases, failure modes, and scenarios that might be missed. Use after creating a PRD to strengthen it. Triggers on: analyze edge cases, find edge cases, what could go wrong, edge case analysis.

Deploy to edge runtimes (Cloudflare Workers, Vercel Edge, Deno Deploy) for globally distributed, low-latency applications. Master edge middleware, streaming, and runtime constraints for 2025+ edge computing.

Edge computing, IoT protocols, and embedded systems integration

edge-stack

Creates and validates catalog items for edition JSON files including spells, qualities, gear, augmentations, weapons, armor, adept powers, foci, and complex forms. Use when adding new items to core-rulebook.json or sourcebook files, or when validating existing catalog entries.

Create ECS component editors using IComponentEditor interface, ComponentEditorRegistry.DrawComponent wrapper, VectorPanel for vectors, and UIPropertyRenderer for simple properties. Covers registration in DI container and manual change detection patterns.