Skill directory
Agent skills
Focused instruction packs that teach a coding agent one job well. Browse the catalog and use any of them inside a RiverX project.
18,175Skills
1,902Publishers
249Official
Rust Ffimohitmishra786/low-level-dev-skillsRust FFI skill for C interoperability. Use when calling C libraries from Rust, generating Rust bindings with bindgen, exporting Rust functions to C with cbindgen, writing safe wrappers around unsafe FFI, or linking system and vendor libraries. Activates on queries about bindgen, cbindgen, extern "C", unsafe FFI, Rust C bindings, linking C from Rust, or sys crates.02Rust No Stdmohitmishra786/low-level-dev-skillsGuide no_std Rust development for embedded and bare-metal targets. Use when writing #![no_std] crates, understanding core vs alloc vs std, implementing custom global allocators, selecting panic handlers for embedded, or testing no_std crates on the host without hardware.01Rust Profilingmohitmishra786/low-level-dev-skillsRust profiling skill for performance analysis. Use when generating flamegraphs from Rust binaries, measuring monomorphization bloat with cargo-llvm-lines, analysing binary size with cargo-bloat, microbenchmarking with Criterion, or interpreting inlined frames in profiles. Activates on queries about cargo flamegraph, cargo-bloat, cargo-llvm-lines, Criterion benchmarks, Rust performance profiling, or binary size analysis.02Rust Sanitizers Mirimohitmishra786/low-level-dev-skillsRust sanitizers and Miri skill for memory safety validation. Use when running AddressSanitizer or ThreadSanitizer on Rust code, interpreting sanitizer reports, using Miri to detect undefined behaviour in unsafe Rust, or validating unsafe code correctness. Activates on queries about Rust ASan, Rust TSan, Miri, RUSTFLAGS sanitize, cargo miri, unsafe Rust UB, or interpreting Rust sanitizer output.02Rust Securitymohitmishra786/low-level-dev-skillsRust security skill for supply chain safety and memory-safe development. Use when auditing dependencies with cargo-audit, enforcing policies with cargo-deny, reviewing RUSTSEC advisories, writing memory-safe FFI patterns, or integrating fuzzing and Miri into a security review pipeline. Activates on queries about cargo-audit, cargo-deny, RUSTSEC advisories, supply chain security, Rust CVEs, safe FFI, or fuzzing for security.01Rust Unsafemohitmishra786/low-level-dev-skillsRust unsafe code skill for systems programming. Use when writing or reviewing unsafe Rust, understanding what operations require unsafe, implementing safe abstractions over unsafe code, auditing unsafe blocks, or understanding raw pointers, transmute, and extern. Activates on queries about unsafe Rust, raw pointers, transmute, unsafe blocks, writing safe wrappers, UnsafeCell, unsafe trait impl, or auditing unsafe code.02Rustc Basicsmohitmishra786/low-level-dev-skillsRust compiler skill for systems programming. Use when selecting RUSTFLAGS, configuring Cargo profiles, tuning release builds, reading assembly or MIR output, understanding monomorphization, or diagnosing compilation errors. Activates on queries about rustc flags, Cargo.toml profiles, opt-level, LTO, codegen-units, target-cpu, emit asm, MIR, or Rust build performance.02Sanitizersmohitmishra786/low-level-dev-skillsCompiler sanitizer skill for runtime bug detection in C/C++. Use when enabling and interpreting AddressSanitizer (ASan), UndefinedBehaviorSanitizer (UBSan), ThreadSanitizer (TSan), MemorySanitizer (MSan), or LeakSanitizer (LSan) with GCC or Clang. Activates on queries about sanitizer flags, sanitizer reports, ASAN_OPTIONS, memory errors, data races, undefined behaviour, uninitialised reads, or choosing which sanitizer to use for a given bug class.03Simd Intrinsicsmohitmishra786/low-level-dev-skillsSIMD intrinsics skill for x86 (SSE/AVX) and ARM (NEON) vectorization. Use when reading auto-vectorization reports, writing SSE2/AVX2/NEON intrinsics, checking CPU feature flags at runtime, choosing between compiler builtins and raw intrinsics, or diagnosing why auto-vectorization failed. Activates on queries about SIMD, SSE2, AVX2, NEON, intrinsics, -fopt-info-vec, auto-vectorization, or vectorization failures.02Static Analysismohitmishra786/low-level-dev-skillsStatic analysis skill for C/C++ codebases. Use when hardening code quality, triaging noisy builds, running clang-tidy, cppcheck, or scan-build, interpreting check categories, suppressing false positives, or integrating static analysis into CI. Activates on queries about clang-tidy checks, cppcheck, scan-build, compile_commands.json, code hardening, or static analysis warnings.02Strace Ltracemohitmishra786/low-level-dev-skillsstrace and ltrace skill for system call and library call tracing. Use when a binary behaves incorrectly without crashing, diagnosing file-not-found errors, permission failures, network issues, or unexpected library calls by tracing syscalls and library function calls. Activates on queries about strace, ltrace, syscall tracing, library interception, ENOENT, EPERM, strace -e, or diagnosing binary behaviour without a debugger.02Valgrindmohitmishra786/low-level-dev-skillsValgrind profiler skill for memory error detection and cache profiling. Use when running Memcheck to find heap corruption, use-after-free, memory leaks, or uninitialised reads; or Cachegrind/Callgrind for cache simulation and function-level profiling. Activates on queries about valgrind, memcheck, heap leaks, use-after-free without sanitizers, cachegrind, callgrind, KCachegrind, or massif memory profiling.02Wasm Emscriptenmohitmishra786/low-level-dev-skillsWebAssembly with Emscripten skill for C/C++ to WASM compilation. Use when compiling C/C++ to WebAssembly with emcc, configuring EXPORTED_FUNCTIONS, understanding the WASM memory model, using Asyncify for async C code, debugging .wasm with browser devtools or wasm-opt, or targeting WASI vs browser environments. Activates on queries about Emscripten, emcc, WebAssembly from C/C++, WASM memory model, Asyncify, EXPORTED_FUNCTIONS, WASI, or wasm-opt.02Wasm Wasmtimemohitmishra786/low-level-dev-skillsWebAssembly runtime skill using wasmtime. Use when running WASM modules with wasmtime CLI, working with WASI preview2, using the component model, embedding wasmtime in Rust applications, limiting execution with fuel metering, or debugging WASM with DWARF in wasmtime. Activates on queries about wasmtime, WASI, WASM component model, wasmtime embedding, WIT interfaces, fuel metering, or server-side WebAssembly.01Zephyrmohitmishra786/low-level-dev-skillsZephyr RTOS skill for embedded development. Use when building Zephyr applications with west, configuring boards and targets, working with Kconfig and devicetree, using the Zephyr shell and logging subsystem, or running on the native_sim target. Activates on queries about Zephyr, west build, Kconfig, devicetree, Zephyr logging, west flash, board targets, or native POSIX simulation.02Zig Build Systemmohitmishra786/low-level-dev-skillsZig build system skill for multi-file Zig projects. Use when writing or debugging build.zig files, adding executables or libraries, integrating C source files, configuring build-time options, running tests with zig build test, or managing build.zig.zon package manifests. Activates on queries about build.zig, b.addExecutable, addCSourceFiles, b.option, zig build, build.zig.zon, or Zig package management.02Zig Cinteropmohitmishra786/low-level-dev-skillsZig C interoperability skill. Use when calling C from Zig, calling Zig from C, using @cImport and @cInclude, running translate-c on C headers, defining extern structs and packed structs, matching C ABI types, or building mixed C/Zig projects. Activates on queries about @cImport, @cInclude, translate-c, extern struct, packed struct, Zig C ABI, calling C from Zig, exporting Zig to C, or bindgen equivalents.02Zig Crossmohitmishra786/low-level-dev-skillsZig cross-compilation skill. Use when cross-compiling Zig programs to different targets, using Zig's built-in cross-compilation for embedded, WASM, Windows, ARM, or using zig cc to cross-compile C code without a system cross-toolchain. Activates on queries about Zig cross-compilation, zig target triples, zig cc cross-compile, Zig embedded targets, or Zig WASM.02Zig Debuggingmohitmishra786/low-level-dev-skillsZig debugging skill. Use when debugging Zig programs with GDB or LLDB, interpreting Zig runtime panics, using std.debug.print for tracing, configuring debug builds, or debugging Zig programs in VS Code. Activates on queries about debugging Zig, Zig panics, zig gdb, zig lldb, std.debug.print, Zig stack traces, or Zig error return traces.02
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