A Claude Code skill (7-step loop: harness -> roofline -> algorithm -> toolchain -> implement -> profile -> specialize -> iterate) plus kernel-algorithmist, kernel-implementer, kernel-profiler and kernel-verifier.
Tools are verified on device: roofline.py measures the machine instead of quoting a datasheet, profile.sh runs nsys-then-ncu and emits a diagnosis rather than a metric dump, dump_ir.sh extracts Triton/Inductor IR and SASS.
README.md has the install steps and the two things that bite: ncu needs SYS_ADMIN or it exits ERR_NVGPUCTRPERM, and counters are hints not verdicts -- cuBLAS's own GEMM profiles at 15% occupancy with 168 regs/thread while being essentially optimal.
