Metal Kernel
pytorch/pytorch
Write Metal/MPS kernels for PyTorch operators. An agent skill from pytorch/pytorch.
Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants.
MITAuto-check passed
Install Kernel Correctness
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install uw-syfi/vibesys kernel-correctness --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/skills/kernel-correctness .claude/skills/kernel-correctness && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .claude/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctnessType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install uw-syfi/vibesys kernel-correctness --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .agents/skills && cp -r skills-src/resources/skills/kernel-correctness .agents/skills/kernel-correctness && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .agents/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install uw-syfi/vibesys kernel-correctness --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/resources/skills/kernel-correctness .cursor/skills/kernel-correctness && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .cursor/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/uw-syfi/vibesys.git --path resources/skills/kernel-correctness--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install uw-syfi/vibesys kernel-correctness --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/resources/skills/kernel-correctness .gemini/skills/kernel-correctness && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .gemini/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install uw-syfi/vibesys kernel-correctnessInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .github/skills && cp -r skills-src/resources/skills/kernel-correctness .github/skills/kernel-correctness && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .github/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add uw-syfi/vibesys --skill kernel-correctness -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install uw-syfi/vibesys kernel-correctness --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/uw-syfi/vibesys.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/resources/skills/kernel-correctness .opencode/skills/kernel-correctness && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "kernel-correctness" agent skill from https://github.com/uw-syfi/vibesys/tree/main/resources/skills/kernel-correctness into .opencode/skills/kernel-correctness/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kernel-correctness", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
kernel-correctness- GitHub stars
- 103
- Token cost
- ~309 tokens
- SKILL.md length
- 135 words
- Files
- 1
- Skills in repo
- 18
- Repo updated
- First seen
- Licence
- MIT
At a glance
Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants.
- Kernel implementation
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Correctness failures
What it does
Kernel Correctness is an agent skill from uw-syfi/vibesys. Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants. Use for kernel implementation or correctness failures.
Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Can AI Agents Build Bespoke Systems? The licence is MIT.
When your agent uses it
- Kernel implementation
- Correctness failures
Example prompts
- “/kernel-correctness”
What it can do on your machine
Read from SKILL.md and the folder at commit e78a078. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Kernel Correctness loads about 309 tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 135 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from uw-syfi/vibesys at commit e78a078, republished under its MIT licence (© uw-syfi). 135 words, ~309 tokens.
Download SKILL.mdSave it as
.claude/skills/kernel-correctness/SKILL.md (or your agent's skills folder).- name
- kernel-correctness
- description
- Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants. Use for kernel implementation or correctness failures.
Kernel correctness
Read the task's candidate contract and accuracy checker to identify the exact supported inputs and comparison rule. Translate the reference operation into invariants for every output element, including reductions, masks, aliasing, strides, and tails where applicable. Keep the evaluator-owned reference and checker unchanged.
When a case fails, isolate the smallest supported shape and input pattern that reproduces it. Compare intermediate values or one output tile against the reference, then distinguish indexing errors, missing synchronization, uninitialized memory, and allowed floating-point variation. Run the full checker after each fix; a passing benchmark shape is insufficient.
For parallel writes, establish which thread owns each address. For reductions, check accumulation dtype, order-sensitive tolerance, and behavior at zero or masked elements. If the contract requires repeatable output, verify repeated runs under the same input and reject race-dependent results.
© uw-syfi, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in resources/skills/kernel-correctness of uw-syfi/vibesys.
Open the folder on GitHubat commit e78a078
Compare with similar skills
Kernel Correctness next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Kernel Correctness this skilluw-syfi/vibesys | 103 | — | ~309 | Automated safety check: Pass | MIT | |
| Metal Kernelpytorch/pytorch | 104k | — | ~4.9k | Automated safety check: Pass | Custom licence | |
| Ito Computeaffaan-m/ECC | 274k | 1 repos | ~1.7k | Automated safety check: Pass | MIT | |
| CorrectionNxcoreAI/EverRoom | 3k | — | ~290 | Automated safety check: Pass | Custom licence | |
| Add Jit Kernelsgl-project/sglang | 37k | — | ~13k | Automated safety check: Pass | Apache-2.0 | |
| Kernel Organizationsgl-project/sglang | 37k | — | ~1.3k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Ito Compute
affaan-m/ECC
Query live GPU inventory, submit an authenticated Itô fixed-rate RFQ, inspect RFQ or procurement status, revoke device credentials, and run explicitly gated node qualification through the separately…
Correction
NxcoreAI/EverRoom
Compute Room overview corrections—citation corrections as per-claim edits and general corrections as a single proposal.
Add Jit Kernel
sgl-project/sglang
Step-by-step tutorial for adding a new lightweight JIT CUDA kernel to sglang.kernels JIT infrastructure and public operator groups
Kernel Organization
sgl-project/sglang
Apply the SGLang kernels RFC when adding, moving, splitting, or reviewing kernel APIs, registry metadata, kernel tests, benchmarks, and model-specific implementations.
- Official
Correct
cursor/plugins
Find the mistakes agents keep repeating in this repo and make each one impossible.
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Neuron Nki Debugging
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This skill guides debugging NKI compilation errors on Neuron hardware.
Neuron Nki Docs
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Research NKI documentation for API lookups, tutorials, error codes, architecture, and optimization guides.
Neuron Nki Profile Querying
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Neuron Nki Writing
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Guide for writing and modifying NKI kernels. An agent skill from uw-syfi/vibesys.
Triage PRs
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Questions about Kernel Correctness
What does Kernel Correctness do?
Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants. Kernel Correctness is an agent skill from uw-syfi/vibesys. Check a compute kernel against its task reference, including numerical tolerance, memory safety, and supported input variants.
When should I use Kernel Correctness?
Kernel Correctness fits situations like: kernel implementation; correctness failures.
How do I install Kernel Correctness in Claude Code?
Run `npx skills add uw-syfi/vibesys --skill kernel-correctness -a claude-code`. Or copy the skill folder (resources/skills/kernel-correctness in uw-syfi/vibesys) into .claude/skills/kernel-correctness in your project. Claude Code loads it when a task matches its description.
How do I install Kernel Correctness in Codex?
Run `npx skills add uw-syfi/vibesys --skill kernel-correctness -a codex`. Or copy the skill folder (resources/skills/kernel-correctness in uw-syfi/vibesys) into .agents/skills/kernel-correctness in your project. Codex loads it when a task matches its description.
Can I use Kernel Correctness in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add uw-syfi/vibesys --skill kernel-correctness -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kernel-correctness, .gemini/skills/kernel-correctness, .github/skills/kernel-correctness and .opencode/skills/kernel-correctness in your project.
What does Kernel Correctness need to run?
SKILL.md names no scripts, command-line tools or credentials: Kernel Correctness is instructions for the agent only.
Does Kernel Correctness access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Kernel Correctness safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Kernel Correctness use?
Kernel Correctness is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Kernel Correctness use?
About 309 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Kernel Correctness?
Skills that share tags, products or a category with Kernel Correctness: Metal Kernel (pytorch/pytorch, 104k stars), Ito Compute (affaan-m/ECC, 274k stars), Correction (NxcoreAI/EverRoom, 3k stars) and Add Jit Kernel (sgl-project/sglang, 37k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Kernel Correctness?
uw-syfi (a GitHub organization) maintains it in uw-syfi/vibesys, which has 103 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 6, 2026.
Source: uw-syfi/vibesys on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.