category-filtering-and-difficulty-analysis skill for Claude Code, Codex and Cursor

Install

Each tab says whether it installs commit 0ee34f3, the one we checked, or the latest version.

No tab for your agent? Use Any agent for OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie, Amp and Antigravity, and Claude Code for Cline. Kiro needs the folder copied by hand.

Pinned to commit 0ee34f3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .claude/skills &&
  mkdir .claude/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .claude/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

If Claude Code was already running and this created the skills folder, run /reload-skills.

Claude Code docs

Pinned to commit 0ee34f3, the one we checked.

Skills in the Claude apps belong to your account rather than to a project.

Make category-filtering-and-difficulty-analysis.zip, with the skill folder at the top level:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  out="$(mktemp -d)" &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering "$out"/category-filtering-and-difficulty-analysis &&
  (cd "$out" && zip -qr - category-filtering-and-difficulty-analysis) > category-filtering-and-difficulty-analysis.zip &&
  rm -rf "$tmp" "$out"

In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose category-filtering-and-difficulty-analysis.zip.

On Free, Pro and Max plans, turn on Code execution and file creation (Create and edit files in newer settings) under Settings > Capabilities.

Claude apps docs

Pinned to commit 0ee34f3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .agents/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

Codex picks up new skills on its own; restart it if this one does not appear.

Codex docs

Pinned to commit 0ee34f3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .cursor/skills &&
  mkdir .cursor/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .cursor/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

Cursor docs

Pinned to commit 0ee34f3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .github/skills &&
  mkdir .github/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .github/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

In a running Copilot CLI session, run /skills reload.

Or install it with gh skill, which also installs the commit we checked. Needs GitHub CLI 2.90 or later.

gh skill install OpenSenseNova/SenseNova-Skills skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/SKILL.md@0ee34f37b969011d527eba348d1bec220fd1a7dd --agent github-copilot --scope project

Copilot & VS Code docs

Pinned to commit 0ee34f3, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .gemini/skills &&
  mkdir .gemini/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .gemini/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

In a running session, run /skills reload.

Or use Gemini CLI’s own installer. Installs the latest version, not the one we checked.

gemini skills install https://github.com/OpenSenseNova/SenseNova-Skills.git --path skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering --scope workspace

Gemini CLI docs

Pinned to commit 0ee34f3, the one we checked.

Codex, Cursor, Copilot, VS Code, Gemini CLI, OpenCode, Goose, Amp and Zed all read .agents/skills; Claude Code and Kiro list only their own folders.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/OpenSenseNova/SenseNova-Skills.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  git -C "$tmp" sparse-checkout set -- skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering &&
  git -C "$tmp" checkout -q 0ee34f37b969011d527eba348d1bec220fd1a7dd &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/category-filtering-and-difficulty-analysis &&
  cp -R "$tmp"/skills/sn-da-excel-workflow/capability/excel-data-filtering/category-filtering/. .agents/skills/category-filtering-and-difficulty-analysis/ &&
  rm -rf "$tmp"

Or use the skills CLI from skills.sh. Installs the latest version, not the one we checked. The skills CLI reports installs to skills.sh unless you set DISABLE_TELEMETRY=1.

npx skills@1.7.4 add OpenSenseNova/SenseNova-Skills --skill category-filtering-and-difficulty-analysis

Agent Skills docs

What it can touch

From the files and frontmatter at commit 0ee34f3. This is how much a skill can do, not whether it is risky.

What it can touch: Instructions only

It is instructions only: no scripts, no named hosts and no pre-approved tools.

Pattern check

Pattern check: nothing flagged · commit 0ee34f3 · 27 Oct 2026

We checked every text file in this skill, at commit 0ee34f3 on 27 Oct 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check works Report an incorrect finding

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

Agent Skills specFails
The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.
- Error
  The name "category-filtering-and-difficulty-analysis" doesn't match its folder "category-filtering". The spec requires them to match. N4
  Fix: Set name: category-filtering, or rename the folder to category-filtering-and-difficulty-analysis.
- Note
  The description doesn't say when to use the skill. D6
  Fix: Add a sentence such as "Use when …" naming the requests or files that should trigger it.
- Note
  There is no license field, so readers can't tell whether they may reuse the skill. O2
  Fix: Add license: with an SPDX name such as MIT or Apache-2.0, or the name of a bundled licence file.
Claude CodePasses
Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.
- Note
  The name "category-filtering-and-difficulty-analysis" doesn't match its folder "category-filtering". Claude Code shows the skill as /category-filtering-and-difficulty-analysis, and the folder name also invokes it. N4
  Fix: Set name: category-filtering, or rename the folder to category-filtering-and-difficulty-analysis.
Claude apps & API uploadFails
Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.
- Error
  The name "category-filtering-and-difficulty-analysis" doesn't match its folder "category-filtering". claude.ai refuses an upload whose folder name doesn't match the skill name. N4
  Fix: Set name: category-filtering, or rename the folder to category-filtering-and-difficulty-analysis.
OpenAI (Codex & API)Passes with warnings
Codex finds SKILL.md by its exact name and needs a description; OpenAI's Skills API checks the frontmatter against the spec and caps uploads.
- Warning
  The name "category-filtering-and-difficulty-analysis" doesn't match its folder "category-filtering". OpenAI's own upload example uses a differently named folder, but the spec it follows says they must match. N4
  Fix: Set name: category-filtering, or rename the folder to category-filtering-and-difficulty-analysis.
VS Code & CopilotPasses with warnings
VS Code reads skills one folder below .github/skills, .claude/skills or .agents/skills and falls back to the folder name when the name is missing or differs; GitHub's Copilot docs require the exact name SKILL.md.
- Warning
  The name "category-filtering-and-difficulty-analysis" doesn't match its folder "category-filtering". VS Code uses the folder name, category-filtering, instead. N4
  Fix: Set name: category-filtering, or rename the folder to category-filtering-and-difficulty-analysis.

SKILL.md

Files

1 file

Path	Size
SKILL.md (opens in a new tab)	7.4 KB

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All skills in OpenSenseNova/SenseNova-Skills

Install

What it can touch

Pattern check

Format check

SKILL.md

Files

More from OpenSenseNova/SenseNova-Skills

categorical-comparison-analysis

category-statistics

chart-embedded-export

condition-filtering-and-large-file-optimization

dynamic-large-file-parquet-analysis

dynamic-percentage-and-large-file-analysis