Blockchain

Use this skill when building Model Context Protocol (MCP) servers on Cloudflare Workers. This skill should be used when deploying remote MCP servers with TypeScript, implementing OAuth authentication (GitHub, Google, Azure, etc.), using Durable Objects for stateful MCP servers, implementing WebSocket hibernation for cost optimization, or configuring dual transport methods (SSE + Streamable HTTP). The skill prevents 15+ common errors including McpAgent class export issues, OAuth redirect URI mismatches, WebSocket state loss, Durable Objects binding errors, and CORS configuration mistakes. Includes production-tested templates for basic MCP servers, OAuth proxy integration, stateful servers with Durable Objects, and complete wrangler.jsonc configurations. Covers all 4 authentication patterns: token validation, remote OAuth with DCR, OAuth proxy (workers-oauth-provider), and full OAuth provider implementation. Self-contained with Worker and Durable Objects basics. Token efficiency: ~87% savings (40k → 5k tokens).

Master .NET async/await patterns including Task-based Asynchronous Pattern (TAP), ValueTask optimization, ConfigureAwait usage, cancellation tokens, parallel processing, and avoiding deadlocks in ASP.NET Core applications for maximum performance and responsiveness.

Create, update, and maintain specialized AI agent prompts stored in XML and Markdown formats. This skill covers agent role definitions, capabilities, constraints, and best practices for agent prompt authoring. Use when creating new agent prompts, updating existing agents, understanding agent roles, or when users mention agent creation, agent prompts, or role-based AI systems.

Defines what counts as valid evidence in PR reviews including code snippets, execution traces, exploitation scenarios, and test results. Use when validating findings, writing review reports, or verifying claims.

Ability to plan, coordinate, and control projects to achieve defined objectives within agreed scope, time, cost, quality, and risk constraints. Includes defining project plans, managing resources and stakeholders, tracking progress, addressing issues and risks, and adapting delivery in response to change. Applies across technical, organisational, infrastructure, and service contexts and is independent of specific methodologies or tools, with human accountability retained for decisions, governance, and outcomes.

Implement DeFi protocols with production-ready templates for staking, AMMs, governance, and lending systems. Use when building decentralized finance applications or smart contract protocols.

Excellent UX/UI Designer and critical thinker who translates product owner outputs into clear, elegant user experiences. Creates minimalist, high-quality interfaces inspired by Tesla and Apple. Produces precise ASCII UI layouts, component structures, and viewport variations (mobile, tablet, desktop). Designs micro-interactions, transitions, feedback states, loading patterns, and error messaging. Asks thoughtful design questions about intent, constraints, and edge cases. Welcomes feedback and iterates quickly. Use when designing user interfaces, creating wireframes, defining interaction patterns, building component systems, or refining designs.

Production-ready authentication framework for TypeScript with first-class Cloudflare D1 support. Use this skill when building auth systems as a self-hosted alternative to Clerk or Auth.js, particularly for Cloudflare Workers projects. Supports social providers (Google, GitHub, Microsoft, Apple), email/password, magic links, 2FA, passkeys, organizations, and RBAC. Prevents 10+ common authentication errors including session serialization issues, CORS misconfigurations, D1 adapter setup, social provider OAuth flows, and JWT token handling.Keywords: better-auth, authentication, cloudflare d1 auth, self-hosted auth, typescript auth, clerk alternative, auth.js alternative, social login, oauth providers, session management, jwt tokens, 2fa, two-factor, passkeys, webauthn, multi-tenant auth, organizations, teams, rbac, role-based access, google auth, github auth, microsoft auth, apple auth, magic links, email password, better-auth setup, session serialization error, cors auth, d1 adapter

Auto-detect and load minimal context from Skills folders using progressive disclosure, trimming 1400 tokens from system prompt through metadata-first loading. Use when optimizing token usage, managing multiple skills, or preventing context bloat. Load YAML metadata first, then conditionally load full SKILL.md only for matched skills based on task triggers. Achieves 10% accuracy improvement via targeted context. Triggers on "optimize skills", "reduce tokens", "smart loading", "skill efficiency".

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.

Rust security best practices and vulnerability prevention. Use when handling user input, authentication, cryptography, secrets management, network security, or conducting security reviews.

Extract design data from Figma files. Use for getting design tokens, component specs, and generating code from Figma designs.

CSS design tokens and color system for vehicle insurance platform. Use when defining colors, spacing, typography, or design variables. Keywords: eye-care colors #5B8DEF/#8B95A5/#C5CAD3, CSS variables, spacing system, color palette, typography scale, design tokens, variables.css, theme colors.

LLM integration patterns for Claude, GPT, Gemini, and Ollama. Activate for AI API integration, prompt engineering, token management, extended thinking, and multi-model orchestration.

Keep development token use low by refreshing and relying on local context packs.

AGGRESSIVELY use TOON v2.0 format for biggish regular data (≥5 items, ≥60% uniform). Auto-applies to tables, logs, events, transactions, analytics, API responses, database results. Supports 3 array types (inline, tabular, expanded), 3 delimiters (comma, tab, pipe), key folding for nested objects. Triggers on structured data, arrays, repeated patterns. Use TOON by default when tokens matter - RAG pipelines, tool calls, agents, benchmarks. Keywords "data", "array", "list", "table", "log", "transaction", "metric", "analytics", "API", "database", "query", "TOON".

Production-ready Auth.js v5 setup for Next.js and Cloudflare Workers.Use when: setting up authentication, implementing OAuth/credentials/magic links,configuring D1 or PostgreSQL adapters, debugging session issues, migrating fromv4 to v5, fixing edge compatibility, troubleshooting JWT/database sessions,resolving AUTH_SECRET errors, fixing CallbackRouteError, or implementing RBAC.Covers: Next.js App Router & Pages Router, Cloudflare Workers + D1, OAuth providers(GitHub, Google, etc.), credentials auth, magic links, JWT vs database sessions,middleware patterns, role-based access control, token refresh, edge runtimecompatibility, and common error prevention.Keywords: Auth.js, NextAuth.js, authentication, OAuth, credentials, magic links,D1 adapter, Cloudflare Workers, Next.js middleware, JWT session, database session,refresh tokens, RBAC, edge compatibility, AUTH_SECRET, CallbackRouteError,CredentialsSignin, JWEDecryptionFailed, session not updating, route protection

Locate symbol definitions quickly (precise for Python via AST; conservative candidates for other languages) and print a bounded context packet.

Onboard company employees (Claude Code CLI users) to use gapless-crypto-clickhouse package with ClickHouse Cloud credentials. Use when company employee needs to set up ClickHouse Cloud access, mentions first-time setup, credential configuration, connection testing, or troubleshooting ClickHouse Cloud connections.

JupyterLab ML/AI development environment management via Podman Quadlet.Supports multi-instance deployment, GPU acceleration (NVIDIA/AMD/Intel),token authentication, and per-instance configuration. Use when users needto configure, start, stop, or manage JupyterLab containers for ML development.