Developer Tools & Repos Agent Skills for Codex CLI

Use whenever `harness-eng` is writing a DSH plugin's own TypeScript — deciding whether it's a tool, hook, UI/slot…

Automate Dungeon Fighter Online tasks via Rube MCP (Composio).

Discover peer corpora across a Git org via the GitHub MCP, maintain the canonical app-identity registry, and recompose the…

Edit an existing action (TaskDialog) in a Copilot Studio agent.

Edit Copilot Studio agent settings, instructions, or configuration.

Work with Effect v4 / effect-smol TypeScript code in this repo

Pattern for implementing optimistic UI updates with effect-atom in this codebase.

Pattern for wrapping third-party SDK clients (Stripe, Resend, AWS, etc.) with Effect.

Guides users through setting up an ElevenLabs API key for ElevenLabs MCP tools.

Shared vocabulary for designing deep modules.

Use when designing a system, service, or architecture from requirements and constraints, especially for API design, data modeling, service…

Automate Epic Games tasks via Rube MCP (Composio).

Svelte best practices for writing, editing, or reviewing Svelte/SvelteKit components and modules.

Build professional native iPhone apps in Swift with SwiftUI and UIKit.

Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git…

Enforces a typed-error spine — a hand-rolled sealed Result<T,F> plus one per-boundary sealed Failure carrying a stable code and typed…

Rules for ESM-first TypeScript projects using "type": "module" with moduleResolution: "nodenext".

Develops, validates, and refactors Europa Universalis IV 1.37.5 mods, Clausewitz scripts, and modding tools with strict syntax validation.

Hard-won ground rules for building EvenHub apps on Even Realities G2 smart glasses — SDK limits, audio/mic/VAD, TTS latency, rendering…

Analyze and control Flexport request volume without inventing undocumented global limits or headers.

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