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Found 2,084 Skills
Debug Rails issues systematically. Use when encountering ActiveRecord errors like RecordNotFound, routing issues, N+1 query problems detected by Bullet, asset pipeline issues, migration failures, gem conflicts, ActionController errors, CSRF token problems, or any Ruby on Rails application errors requiring diagnosis.
Debug Next.js issues systematically. Use when encountering SSR errors, hydration mismatches like "Text content did not match", routing issues with App Router or Pages Router, build failures, dynamic import problems, API route errors, middleware issues, caching and revalidation problems, or performance bottlenecks. Covers both Pages Router and App Router architectures.
This skill should be used when troubleshooting Firebase emulator issues, rules violations, function errors, auth problems, or deployment failures. Triggers on "error", "not working", "debug", "troubleshoot", "failing", "broken", "permission denied", "emulator issue".
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Provide comprehensive context in prompts—files, errors, Laravel version, dependencies, and monorepo details—for accurate AI responses
QEMU kernel development skill for driver and kernel testing. Use when booting custom kernels in QEMU, Buildroot/Yocto rootfs, virtio devices, or NFS root for driver iteration. Activates on queries about QEMU kernel dev, Buildroot QEMU, virtio block, kernel module test QEMU, or -append root=
Official skill for MobileBuildMCP. Use when doing iOS/macOS/watchOS/tvOS/visionOS work (build, test, run, debug, log, UI automation).
Subprocess and concurrency discipline for Python: how to run external programs safely, and how to pick the right concurrency model instead of the habitual one. Use when spawning processes with subprocess or asyncio subprocesses, writing threading or ThreadPoolExecutor code, using multiprocessing or ProcessPoolExecutor, sizing worker pools, bounding fan-out, or diagnosing deadlocks, hangs, orphaned children, and zombie processes. Covers argv vs shell, timeouts that kill the whole process tree, pipe deadlocks, start methods (spawn/forkserver/fork), pickling limits, GIL and free-threading, and cancellation. For event-loop and coroutine rules (TaskGroup, blocking calls, cancellation), use python-async-best-practices instead.