Developer Tools & Repos Agent Skills for Codex CLI

This skill should be used when the user asks to "reindex the codebase", "refresh code index", "update matrix index", "rebuild symbol…

When to activate: goroutines, channels, select, sync.WaitGroup, sync.Mutex, context cancellation, worker pools, rate limiting in Go

When to activate: Rust error handling, thiserror, anyhow, custom errors, Result, question mark operator, error propagation

When to activate: Zustand, Jotai, XState, TanStack Query, URL state, Redux, state management, client state, server state

When to activate: async/await, actors, tasks, structured concurrency, MainActor, async sequences in Swift

Use when managing Maven dependencies, resolving dependency conflicts, configuring BOMs, or optimizing dependency trees in Java projects.

Build MCP servers in Python with FastMCP.

Build CLI scripts alongside MCP servers for terminal environments.

Designs or reviews MCP servers so AI agents can use them reliably: outcome-oriented tools, flat constrained parameters, actionable errors…

Build, run, and order MCP servers through a portable CLI.

MCP server building, advanced patterns, and security hardening.

Bootstrap MCP server with Python SDK, transport configuration, tool/resource handlers, and proper project structure.

Build MCP servers with Node/TypeScript SDK — tools, resources, prompts, Zod validation, stdio vs Streamable HTTP.

Use the mcporter CLI to list, configure, auth, and call MCP servers/tools directly (HTTP or stdio), including ad-hoc servers, config…

Generates Mediator pattern for PHP 8.4. Creates coordination layer for complex component interactions with event dispatching…

Master Unity ECS (Entity Component System) with DOTS, Jobs, and Burst for high-performance game development.

Build safe, consistent, diagnosable backend failure handling.

Validate untrusted input at backend boundaries and keep business rules in the correct layer.

Document and name functions, structs, and fields in Melee decompilation.

Quick commit and push with minimal, clean messages

Work with the Membrane multimedia streaming framework in Elixir.