Handles API key and user token authentication for secure Knack API access. Manages session creation, refresh, and credential validation.

K-Scale Operating System - Rust-based robot firmware with gRPC services for actuator control, IMU, and sim2real transfer. Platform abstraction layer for hardware/simulation backends.

Use when creating Room entities for Kotlin/Android apps that mirror Django/PostgreSQL backend schemas. Enforces exact field alignment, prevents schema drift, validates type mappings. Critical for maintaining zero impedance mismatch between backend and mobile.

'World L Skill'

Lag compensation skill for client-side prediction and rollback.

Expert knowledge of Final Fantasy XI private server development using LandSandBoat codebase. Use when working with FFXI game mechanics, LandSandBoat source code, database schema, Lua scripting, GM tools, or server administration.

Laravel Cashier (Paddle) - Subscription billing and payment processing

Laravel v12 - The PHP Framework For Web Artisans (project, gitignored)

Use when creating or modifying code in nomarr/interfaces/. Covers API routes, CLI commands, and web handlers. Interfaces are thin adapters that validate inputs, call services, and serialize outputs.

Use when creating or modifying code in nomarr/services/. Services own runtime wiring, long-lived resources (DB, queues, workers), and call workflows. No complex business logic here.

Managing Linear issues, projects, and teams. Use when working with Linear tasks, creating issues, updating status, querying projects, or managing team workflows.

LispSyntax.jl ↔ ACSets.jl bidirectional bridge with OCaml ppx_sexp_conv-style deriving

LocalSend-based P2P transfer with MCP server design for NATS/Tailscale discovery and throughput tuning.

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This project uses [nexus-agents](https://github.com/williamzujkowski/nexus-agents) v2.3.0 for multi-agent orchestration.

Vast.ai Python SDK — high-level API for GPU instances, volumes, serverless endpoints, and billing.

- **Always bump the npm version** (`npm version patch`) and `npm publish` after any change that gets pushed to main -- code, docs, config, anything.

Query CZ CELLxGENE Census (61M+ cells). Filter by cell type/tissue/disease, retrieve expression data, integrate with scanpy/PyTorch, for population-scale single-cell analysis.

'Step-by-step instructions for designing table schemas and setting up TimescaleDB with hypertables, indexes, compression, retention policies, and continuous aggregates. Instructions for selecting: partition columns, segment_by columns, order_by columns, chunk time interval, real-time aggregation.'

Use the MongoDB MCP server to integrate database queries into workflows.

This skill provides symbol-level code understanding and navigation using Language Server Protocol (LSP). Enables IDE-like capabilities for finding symbols, tracking references, and making precise code edits at the symbol level.

Validate Copilot Studio agent YAML files using the LSP binary's full diagnostics (YAML structure, Power Fx, schema, cross-file references). Use when the user asks to check, validate, or verify YAML files.

Edit an existing action (TaskDialog) in a Copilot Studio agent. Supports connector actions and MCP server actions. Modify inputs, outputs, descriptions, connection mode, and other properties.

Push/pull Copilot Studio agent content via the VS Code extension's LanguageServerHost LSP binary. Handles authentication (interactive browser login for push/pull, device code flow for chat token), sync push, sync pull, clone, and diff operations.

1. [Purpose](#purpose)

API security hardening patterns. Use when implementing rate limiting, input validation, CORS configuration, API key management, request throttling, or protecting endpoints from abuse. Covers defense-in-depth strategies for REST APIs with practical implementations for Express, FastAPI, and serverless.

Secure authentication implementation patterns. Use when implementing user login, registration, password reset, session management, JWT authentication, or OAuth integration. Provides production-ready patterns that avoid common tutorial pitfalls like insecure token storage, weak password hashing, and session fixation.

Modest JavaScript framework that connects JS objects to HTML via data attributes. Stimulus does not render HTML -- it augments server-rendered HTML with behavior.

当你需要解释/排查 HTTP 或 WebSocket 的 401、127 回环例外、API Key 机制时使用；确保业务层不重复鉴权。

Query CELLxGENE Census (61M+ cells) programmatically. Search by cell type, tissue, disease, organism. Get expression matrices as AnnData, stream large queries out-of-core, train PyTorch models on single-cell data. For analyzing your own data use scanpy; for annotated data manipulation use anndata.

Process-based discrete-event simulation framework. Model systems with queues, shared resources, and time-based events: manufacturing lines, service operations, network traffic, logistics. Processes are Python generators that yield events. Resource types include capacity-limited (Resource, PriorityResource, PreemptiveResource), bulk material (Container), and object storage (Store, FilterStore). For continuous simulation use SciPy ODE solvers; for agent-based modeling use Mesa.

{% set server = colin.mcp.source.server_info() %}

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Automatic tool discovery across 17 sources — hooks search before planning and after errors, siblings avoid redundant searches

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Use when interacting with the Meta Ads MCP server to manage accounts, campaigns, ads, insights, and targeting, or to troubleshoot OAuth token authentication. Act as an Expert Media Buyer.

Expert skill for Claude Code CLI -- CLAUDE.md optimization, skill authoring,

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Best practices for using the Ploi PHP SDK to interact with the Ploi.io server management API

creating-server-protocol

Provides AWS serverless architecture patterns for Lambda, API Gateway, DynamoDB, SQS, and SAM/CDK. Use when working with AWS serverless files (serverless.yml, CDK stacks) or when the user mentions Lambda, API Gateway, serverless, or AWS SAM.

Applies production backend patterns: middleware, error handling, auth, database integration, and API design. Use when working with backend service files or when the user mentions Express, Fastify, NestJS, backend patterns, or service architecture.

Set up a PreToolUse hook in .claude/settings.json that blocks dangerous commands — rm -rf, force push, database drops, and others — before they execute. Teaches the pattern of safety hooks for any Claude Code project. Trigger words: safety, guard, block dangerous, protect, prevent destructive, safe mode, dangerous commands, risky operations.

Email infrastructure for AI agents. Create accounts, send/receive emails, manage webhooks, and check karma balance via the AgentMail API.

Firebase gives you a complete backend in minutes - auth, database,

Discover and search 18K+ MCP servers and AI agents across 6+ registries using Global Chat's cross-protocol directory and MCP server.

Inngest expert for serverless-first background jobs, event-driven