Use for writing JavaScript/TypeScript code with the Base44 SDK in EXISTING projects. Triggers: user wants to implement features, build functionality, or write code using Base44; code uses '@base44/sdk' imports; user mentions SDK methods like base44.entities, base44.auth, base44.agents, base44.functions, base44.integrations; user says 'add a feature', 'implement', 'build component', 'write code for'. NOT for: creating new projects, CLI commands (npx base44 create/deploy/login), or directories without base44/config.jsonc - use base44-cli instead.

Estimate baseline serum creatinine for AKI assessment in MIMIC-IV. Use for KDIGO staging, AKI research, or renal function baseline establishment.

Use when multiple fix attempts fail and you need to systematically restore to a working baseline and reimplement instead of fixing broken code.

Query Obsidian Bases via the Bases Query plugin (RPC). Use when you need to read structured data from Obsidian bases.

Access bash command history through Atuin to search for and retrieve previously executed commands.

Create organized bash script structure with color output, menu systems, error handling, and cross-platform support. Standardizes CLI tooling.

当用户操作 .sh、Dockerfile、Makefile、.yml、.yaml 文件，或在 Markdown 中编写 bash 代码块时触发。提供 Bash 编写规范。

Daily Git workflow - add, commit, push, pull cycle for everyday development

Brief description of what this Skill does and when to use it. This field is critical for Claude to discover when to invoke your skill.

batch-coordinator

Effect provides automatic optimization for API calls:

Guides battery chemistry and charging circuit selection for embedded projects.

Manage issues with The Fold's CAS-native BBS (Bulletin Board System). Use for creating, updating, searching, and tracking issues. Invoke when the user wants to create tickets, find work, check issue status, or manage dependencies.

bdd

bdd-assistant

BDD orchestrator for feature-level work. Use when user says 'add', 'implement', 'build', 'feature', 'iteration', 'story', 'phase', 'resume', 'continue', or references a ticket/iteration/story. Also use when work touches 3+ files with new state/flows, or when user runs /bdd. Do NOT use for bug fixes, typos, config changes, or 1-2 file tasks.

AI-native issue tracking with Beads. Use when managing work items, tracking issues, or coordinating tasks in multi-agent workflows. Covers bd commands, dependencies, and sync patterns.

Beam dropshipping and product sync context

Interacts with Bear note-taking app on macOS via X-Callback-URL. Use when user asks to create Bear notes, search notes, add text to notes, manage tags, capture web pages to Bear, or perform any other Bear note management tasks. Supports note creation, text appending, tag management, note search, and web page capture.

Amazon Bedrock AgentCore Policy for defining agent boundaries using natural language and Cedar. Deterministic policy enforcement at the Gateway level. Use when setting agent guardrails, access control, tool permissions, or compliance rules.

Amazon Bedrock AgentCore platform for building, deploying, and operating production AI agents. Covers Runtime, Gateway, Browser, Code Interpreter, and Identity services. Use when building Bedrock agents, deploying AI agents to production, or integrating with AgentCore services.

Amazon Bedrock Agents for building autonomous AI agents with foundation model orchestration, action groups, knowledge bases, and session management. Use when creating AI agents, orchestrating multi-step workflows, integrating tools with LLMs, building conversational agents, implementing RAG patterns, managing agent sessions, deploying production agents, or connecting knowledge bases to agents.

AWS Bedrock foundation models for generative AI. Use when invoking foundation models, building AI applications, creating embeddings, configuring model access, or implementing RAG patterns.

Gather scattered ideas into organized GitHub issues. The bee collects pollen from every flower, checks if the hive already has it, and carefully deposits new work in the comb for later. Never edits code—only organizes the work ahead. Use when creating issues from TODOs or planning work.

Query ecobee thermostat data via Beestat API including temperature, humidity, air quality (CO2, VOC), sensors, and HVAC runtime. Use when user asks about home temperature, thermostat status, air quality, or heating/cooling usage.

Begin the interactive Elixir/Phoenix tutorial with guided sections and pauses for understanding

Uses the mcp postgresql to read and write crm relevant data to the crm database:

Design religious and belief systems for fictional worlds. Use when creating pantheons, religious institutions, spiritual practices, or any belief structures that shape society and drive character motivation.

Provides Notion CMS integration patterns and best practices for Bellog. Triggers when working with Notion data or implementing Notion-based features.

Provides guidance on React Server Components vs Client Components decision-making in Bellog. Triggers when creating new components.

Provides file organization and naming conventions for the Bellog project. Triggers when creating new files or reorganizing code.

Provides theme integration guidelines and CSS variable usage patterns for the Bellog blog. Triggers when creating styled components or working with colors.

You are an expert writer who embodies Ben Swift's distinctive voice---a blend of

BentoML skill for model packaging, serving, and containerization.

Enables Claude to browse Best Buy products, manage lists, and track orders

Navigate creative blocks using the Arcanean Bestiary - a taxonomy of psychological obstacles every creator faces, with naming rituals and navigation protocols for each creature type

Integrate Better Auth for JWT-based authentication in Next.js frontend and FastAPI backend. Handles signup, login, logout, token management, and protected routes. Use when implementing authentication for Phase 2.

Expert skill for implementing Better Auth with JWT tokens and JWKS (JSON Web Key Set) for secure authentication between Next.js frontend and FastAPI backend. Handles JWT token generation, verification, JWKS endpoint setup, and secure API communication. Includes setup for database integration, session management, and user isolation. Use when implementing authentication between frontend (Next.js) and backend (FastAPI) services with JWT tokens and JWKS.

Better Auth JWT verification for Python/FastAPI backends. Use when integrating Python APIs with a Better Auth TypeScript server via JWT tokens. Covers JWKS verification, FastAPI dependencies, SQLModel/SQLAlchemy integration, and protected routes.

Guide implementation of OAuth 2.1 / OIDC authentication using Better Auth with the OIDC Provider plugin. Use this skill when setting up centralized authentication for multiple apps, implementing SSO across a platform, creating an OAuth authorization server, or integrating Better Auth as an identity provider. Covers PKCE for public clients, JWKS configuration, token management, email verification, and common pitfalls like preserving PKCE parameters during sign-in redirects.

Integrate with Better Auth SSO for OAuth2/OIDC authentication. Use this skill when implementing SSO login flows, PKCE authentication, token management, JWKS verification, or global logout in Next.js applications connecting to a Better Auth server.

Better Auth TypeScript/JavaScript authentication library. Use when implementing auth in Next.js, React, Express, or any TypeScript project. Covers email/password, OAuth, JWT, sessions, 2FA, magic links, social login with Next.js 16 proxy.ts patterns.

TypeScript authentication framework (framework-agnostic). Features: email/password, OAuth (Google, GitHub, Discord), 2FA (TOTP, SMS), passkeys/WebAuthn, session management, RBAC, rate limiting, database adapters. Actions: implement, configure, secure authentication systems. Keywords: Better Auth, authentication, authorization, OAuth, email/password, 2FA, MFA, TOTP, passkeys, WebAuthn, session management, RBAC, rate limiting, database adapter, TypeScript auth, social login, Google auth, GitHub auth, Discord auth, email verification, password reset. Use when: implementing TypeScript auth, adding OAuth providers, setting up 2FA/MFA, managing sessions, configuring RBAC, building secure auth systems.

Use when user says /betterdisplay or wants to change display resolution settings and sync to dotfiles

This skill analyzes restaurant receipts and creates tax-compliant German Bewirtungsbeleg PDFs.

Bexio Swiss business software API for managing contacts, quotes/offers, invoices, orders, and items/products. Use when working with Bexio CRM, creating or managing invoices, quotes, sales orders, contact management, or Swiss business administration tasks. Supports listing, searching, creating, editing contacts and sales documents.

Remove backgrounds from images using FAL.ai's BiRefNet v2 model. Uses Bun for fast TypeScript execution with inline scripts.

bg3se-macos-ghidra

Master Business Intelligence fundamentals including KPI design, metrics frameworks, data literacy, and analytical thinking

Arbitrary precision integer calculator for handling extremely large numbers. Use when users need to compute with numbers that exceed standard numeric limits, including operations like factorial of large numbers (e.g., 100!), powers with large exponents (e.g., 2^1000), arithmetic on numbers with hundreds of digits, or prime checking, GCD, LCM, Fibonacci, and binomial coefficients.