Developer Tools & Repos Agent Skills for Codex CLI

When to activate: Rust web development, axum, actix-web, HTTP server, REST API, middleware, routing, handlers

SaaS architecture, multi-tenancy, and subscription management

Complete guide to handling safe areas in Capacitor apps for iPhone notch, Dynamic Island, home indicator, and Android cutouts.

Generates Saga pattern components for PHP 8.4.

Saga Pattern knowledge base. Provides patterns, antipatterns, and PHP-specific guidelines for saga orchestration, choreography, and…

Saga patterns for distributed transactions with orchestration and choreography approaches.

Create, revise, review, and finalize portable SagaSmith Module or rules Packs for the current sagasmith.content-package v2 contract…

Run persistent D&D 5e 2014/2024 campaigns through SagaSmith's source-bound MCP runtime.

Sage HR integration via Apideck's HRIS, ATS unified API — same methods work across every connector in HRIS, ATS, switch by changing…

Sage Intacct integration via Apideck's Accounting unified API — same methods work across every connector in Accounting, switch by changing…

Comprehensive REST API design review with automated linting, breaking-change detection, and design scorecards.

Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture.

Use when designing new high-level system architecture, reviewing existing designs, or making architectural decisions.

Writes, optimizes, and debugs C++ applications using modern C++20/23 features, template metaprogramming, and high-performance systems…

Use when developing firmware for microcontrollers, implementing RTOS applications, or optimizing power consumption.

Implements concurrent Go patterns using goroutines and channels, designs and builds microservices with gRPC or REST, optimizes Go…

Implements advanced TypeScript type systems, creates custom type guards, utility types, and branded types, and configures tRPC for…

Building a complete DAT app with session creation, camera streaming, and photo capture

Game designer for creative vision, GDD creation, and narrative design.

Trigger when the user requests a review of frontend files (e.g., `.tsx`, `.ts`, `.js`).

Expert guidance for Next.js Cache Components and Partial Prerendering (PPR). **PROACTIVE ACTIVATION**: Use this skill automatically when…