How do I install the Sc Diff skill?

Run npx skillmds add majiayu000/sc-diff in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Sc Diff safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Sc Diff?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Sc Diff free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Sc Diff?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Sc Diff by majiayu000 — Agent Skill

Name: Sc Diff
Rating: 4.2 (5 reviews)
Author: majiayu000

File contents

sc-diff

Capabilities

Compare two files or two folders (exactly one of each per request)
Auto semantic diff for .cs/.vb with line fallback for non-.NET files
JSON-first output for AI consumption
Optional HTML report per pair
Git/PR-based comparisons via sc-git-diff
Smart batching for large diff sets

Agent Delegation

Operation	Agent	Returns
File/folder diff	`sc-diff`	JSON: results[], counts, warnings
Git/PR diff	`sc-git-diff`	JSON: results[], refs, counts

Invoke agents via Agent Runner using .claude/agents/registry.yaml.

Parameters

files: string (comma-delimited list of 2 file paths)
folders: string (comma-delimited list of 2 folder paths)
html: boolean (default false)
mode: auto (default), roslyn, line
ignore_whitespace: boolean (default false)
context_lines: number (optional, default 3)
text_output: string|bool (optional; true writes .sc/roslyn-diff/temp/diff-#.txt)
git_output: string|bool (optional; true writes .sc/roslyn-diff/temp/diff-#.patch)
allow_large: boolean (default false)
files_per_agent: number (default 10)
max_pairs: number (default 100)
git_pr: string (PR URL or PR number)

Behavior

Validate exactly one of files or folders.
Resolve inputs into file pairs.
If pair count > max_pairs and allow_large is false, stop with a warning.
If pair count > files_per_agent, split into batches and spawn sub-agents.
Aggregate results: include non-identical diffs and counts.

Caching

Cache Azure DevOps org/project/repo in .sc/roslyn-diff/settings.json.
Store defaults like files_per_agent when set explicitly.

Output Contract

Always return fenced JSON with a discriminated union: success: true|false.
success: true includes aggregated counts and per-pair roslyn-diff JSON outputs.

---name: sc-diffdescription: Semantic diffing for .NET source using roslyn-diff. Supports file/folder diffs, HTML reports, and git/PR-aware comparisons (GitHub + Azure DevOps).--- # sc-diff ## Capabilities - Compare two files or two folders (exactly one of each per request) - Auto semantic diff for .cs/.vb with line fallback for non-.NET files - JSON-first output for AI consumption - Optional HTML report per pair - Git/PR-based comparisons via sc-git-diff - Smart batching for large diff sets ## Agent Delegation | Operation | Agent | Returns | |-----------|-------|---------| | File/folder diff | `sc-diff` | JSON: results[], counts, warnings | | Git/PR diff | `sc-git-diff` | JSON: results[], refs, counts | Invoke agents via Agent Runner using `.claude/agents/registry.yaml`. ## Parameters - `files`: string (comma-delimited list of 2 file paths) - `folders`: string (comma-delimited list of 2 folder paths) - `html`: boolean (default false) - `mode`: `auto` (default), `roslyn`, `line` - `ignore_whitespace`: boolean (default false) - `context_lines`: number (optional, default 3) - `text_output`: string|bool (optional; true writes `.sc/roslyn-diff/temp/diff-#.txt`) - `git_output`: string|bool (optional; true writes `.sc/roslyn-diff/temp/diff-#.patch`) - `allow_large`: boolean (default false) - `files_per_agent`: number (default 10) - `max_pairs`: number (default 100) - `git_pr`: string (PR URL or PR number) ## Behavior 1) Validate exactly one of `files` or `folders`. 2) Resolve inputs into file pairs. 3) If pair count > `max_pairs` and `allow_large` is false, stop with a warning. 4) If pair count > `files_per_agent`, split into batches and spawn sub-agents. 5) Aggregate results: include non-identical diffs and counts. ## Caching - Cache Azure DevOps org/project/repo in `.sc/roslyn-diff/settings.json`. - Store defaults like `files_per_agent` when set explicitly. ## Output Contract - Always return fenced JSON with a discriminated union: `success: true|false`. - `success: true` includes aggregated counts and per-pair roslyn-diff JSON outputs.

Frequently asked questions