Developer Tools & Repos Agent Skills for DeepSeek Harness

Senior embedded software engineer specializing in firmware and driver development for ARM Cortex-M microcontrollers (Teensy, STM32, nRF52…

Optimize React Native app performance including bridge optimization, list rendering, memory management, and profiling.

This skill should be used when the user says "batch merge", "merge batch", "arness batch merge", "arn-code-batch-merge", "merge all PRs"…

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

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

Reconcile App Store Connect subscriptions and in-app purchases with RevenueCat products, entitlements, offerings, and packages using asc…

Consult OpenAI Codex for investigation, debugging, or code review.

Clarify requirements before implementing.

Complete pattern for creating a LAN API with ASP.NET Core 8 Minimal API that shares an SQLite database with a WinForms application…

Diagnose and fix AssemblyAI common errors and exceptions.

Apply production-ready AssemblyAI SDK patterns for TypeScript and Python.

Pre-change blast-radius report for a symbol or file.

Use when importing and managing assets — image compression, 3D scene import, audio formats, resource formats, and import configuration

Use tree-sitter MCP tools for AST-aware code navigation — finding symbols, jumping to definitions, inspecting scopes, and running…

Astro-specific performance optimizations for 95+ Lighthouse scores.

Finds queue publishing (RabbitMQ, Redis), event dispatching, webhooks, and scheduled tasks.

Async job processing patterns for background tasks, Celery workflows, task scheduling, retry strategies, and distributed task execution.

Detects synchronous operations that should be async.

Asynchronous programming models including coroutines, async/await, and reactive patterns

Implements a robust asynchronous state machine pattern to handle long-running operations and prevent gateway timeouts.

Design RESTful APIs with best practices for consistency and usability