Use when setting up user registration flows in a Bknd application. Covers registration configuration, enabling/disabling registration, default roles, password validation, registration forms, and custom fields.

Use when implementing row-level security (RLS) in Bknd. Covers filter policies, user ownership patterns, public/private records, entity-specific RLS, multi-tenant isolation, and data-level access control.

Use when populating a Bknd database with initial or test data. Covers the seed function in options, ctx.em.mutator() for insertOne/insertMany, conditional seeding, environment-based data, and common patterns for dev/test fixtures.

Use when serving uploaded files to users. Covers API-proxied file serving, direct storage URLs (S3/R2/Cloudinary), CDN configuration, public file URLs, caching headers, image optimization with Cloudinary, and serving files in frontend applications.

Use when managing user sessions in a Bknd application. Covers JWT token lifecycle, session persistence, automatic renewal, checking auth state, invalidating sessions, and handling expiration.

Use when initializing or configuring the Bknd authentication system. Covers enabling auth, configuring password strategy, setting up JWT and cookie options, defining roles, and production security settings.

Use when configuring storage backends for file uploads. Covers S3-compatible storage (AWS S3, Cloudflare R2, DigitalOcean Spaces), Cloudinary media storage, local filesystem adapter for development, adapter configuration options, environment variables, and production storage setup.

Use when writing tests for Bknd applications, setting up test infrastructure, creating unit/integration tests, or testing API endpoints. Covers in-memory database setup, test helpers, mocking, and test patterns.

Use when encountering Bknd errors, getting error messages, something not working, or needing quick fixes. Covers error code reference, quick solutions, and common mistake patterns.

Use when configuring webhook integrations in Bknd. Covers receiving incoming webhooks via HTTP triggers, sending outgoing webhooks with FetchTask, event-triggered webhooks on data changes, signature verification, retry patterns, and async processing.

`bkt` is a unified CLI for **Bitbucket Data Center** and **Bitbucket Cloud**. It mirrors `gh` ergonomics and provides structured JSON/YAML output for automation.

Develop with BlaC state management library for React. Use when creating Cubits, using useBloc/useBlocActions hooks, managing state containers, or implementing inter-bloc communication patterns.

Apply Eskil Steenberg's black box architecture principles to build modular, maintainable software. Automatically refactors code into replaceable components, designs system architectures with clean boundaries, and debugs with modular isolation.

Use when restoring previous file versions, querying file modification history, recovering from accidental edits, or understanding how blackbox flight recorder works for file snapshots and disaster recovery

**Status**: ✅ Production Ready

Analyze the impact of code changes by mapping call graphs and identifying all direct and indirect dependencies. Use when users ask about blast radius analysis, code change impact, who calls a function, downstream dependencies, or risk assessment before refactoring. Traces call chains, identifies high-risk modules, and provides ranked impact analysis.

Run remote BLAST searches against NCBI databases using Biopython Bio.Blast. Use when identifying unknown sequences, finding homologs, or searching for sequence similarity against NCBI's nr/nt databases.

Adds a complete blog feature to an existing Blazor WebAssembly Static Web App with Azure Functions backend and Azure File Share for markdown storage. Use when implementing blog functionality in .NET Blazor WASM projects with Azure infrastructure. Includes post listing, detail pages, markdown rendering, Azure Storage integration.

Comprehensive Blazor development expertise covering Blazor Server, WebAssembly, and Hybrid apps. Use when building Blazor components, implementing state management, handling routing, JavaScript interop, forms and validation, authentication, or optimizing Blazor applications. Includes best practices, architecture patterns, and troubleshooting guidance.

**Version**: 1.0.0

Guidelines for Blazor development including component lifecycle, state management, and performance optimization

Blender to engine pipeline skill for GLTF/FBX export.

blender-toolkit

Blender 3D creation suite for modeling, animation, rendering, compositing, video editing, and game development. Use for 3D modeling, sculpting, animation, shading, rendering, simulation, video editing, and Python scripting.

Blind peer review for code - multiple agents critique independently, then synthesize privately to avoid groupthink

Five-skill sequence for 'what am I missing?' - Collide → Critique → Scale → Synthesize → Simplify. Use when you suspect you're not seeing something.

Systematically identify what's missing in non-fiction writing—both blind spots (inherent limitations) and blank spots (gaps that could be addressed). Use before finalizing non-fiction or when feedback feels incomplete.

Implement blinding procedures to reduce bias in experimental studies. Use when: (1) Designing RCTs, (2) Ensuring objectivity, (3) Meeting CONSORT standards, (4) Minimizing performance and detection bias.

Vision-language pre-training framework bridging frozen image encoders and LLMs. Use when you need image captioning, visual question answering, image-text retrieval, or multimodal chat with state-of-the-art zero-shot performance.

Parallelizes multi-issue sprints by running independent Claude agents in isolated git worktrees. Each agent creates a PR, self-reviews to 10/10 with 100% issue coverage, then PRs are sequentially merg

Create working, tested Bloblang transformation scripts from natural language descriptions.

| Atributo | Valor |

Master BLoC (Business Logic Component) pattern for Flutter with flutter_bloc. Learn events, states, testing, and advanced patterns for scalable apps.

The Block Collection and Block Party are repositories for existing AEM blocks, build tools, code snippets, integration patterns, plugins, and more. Use this skill anytime you are developing something and want to find a reference to use as a starting point.

React editor components for WordPress blocks in Oh My Brand! theme. useBlockProps, InspectorControls, MediaUpload, and attributes. Use when writing edit.tsx files.

Survey available blocks from local AEM Edge Delivery Services project and Block Collection to understand the block palette available for authoring. Returns block inventory with purposes to inform content modeling decisions.

Copy-paste scaffolds for Oh My Brand! blocks. Templates for block.json, render.php, helpers.php, view.ts, style.css, and tests. Use when creating new blocks.

Master blockchain fundamentals including consensus, cryptography, and distributed systems

Empirical validation workflow for blockchain data collection pipelines before production implementation. Use when validating data sources, testing DuckDB integration, building POC collectors, or verifying complete fetch-to-storage pipelines for blockchain data.

Expert blockchain developer specializing in smart contract development, DApp architecture, and DeFi protocols. Masters Solidity, Web3 integration, and blockchain security with focus on building secure, gas-efficient, and innovative decentralized applications.

Expert-level blockchain, Web3, smart contracts, DeFi, and cryptocurrency development

Design and implement blockchain integrations across chains and frameworks with emphasis on patterns over specific technologies. Use when building Web3 applications, smart contract systems, token mechanics, decentralized identity, or blockchain-verified data. Triggers on blockchain architecture, smart contract design, Web3 integration, token systems, or decentralized application development. Framework-agnostic—applies to Ethereum, Solana, or emerging chains.

Systematic workflow for researching and validating blockchain RPC providers. Use when evaluating RPC providers for historical data collection, rate limits, archive access, compute unit costs, or timeline estimation for large-scale blockchain data backfills.

Expert guidelines for blockchain development including CosmWasm, Cosmos, and cross-chain patterns

Mark expedition as blocked with reason and optional unblock agent

Converts static web or Next.js projects into ArcBlock blocklets using provided DID. Analyzes project structure, generates configuration files, and validates setup. Requires blocklet DID as parameter.

Create a detailed prompt for generating high-quality blog posts

Create a new technical blog post with deep educational value and professional quality

'Review and improve the blog post draft for clarity, engagement, and authentic voice.'

Generate optimized AI image prompts for blog post hero images