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Fetch and display diffs for various scopes (PR, commit, branch, staged, working tree). Used by other skills that need to analyze changes.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Amend the last commit with current changes and/or an updated message.
Stage changes and create a commit with a conventional commit message.
Full autopilot — plan, implement, and polish a task end-to-end.
Execute a plan file — parse phases, spawn parallel subagents, handle failures.
Start or end a forked session for exploring rabbit holes without losing the main conversation's context.
Structured design intake for non-trivial tasks. Asks clarifying questions and produces a design proposal.
Based on SOC occupation classification
| name | diff |
| description | Fetch and display diffs for various scopes (PR, commit, branch, staged, working tree). Used by other skills that need to analyze changes. |
| allowed-tools | Bash, Read, Glob, Grep, AskUserQuestion, Agent |
Fetch a diff based on the input scope.
$ARGUMENTS determines the scope. Auto-detect the type:
| Input | Diff command |
|---|---|
A PR number (e.g., 123) | gh pr diff 123 |
| A commit SHA (7-40 hex chars) | git diff {sha}~1 {sha} |
A commit range (a..b) | git diff a b |
| A branch name | git diff {base}...{branch} (detect base: gh pr view --json baseRefName -q .baseRefName 2>/dev/null, fall back to main) |
staged or pending | git diff --staged |
current or empty | git diff HEAD |
If empty and the working tree is clean, fall back to the current branch vs main.
Write the diff to a temp file and read it with the Read tool — diffs frequently exceed inline output limits.
If reviewing a PR, also read the PR description. If reviewing a commit, also read the commit messages.
Provide a report of the diffs:
Title:
Size guidelines:
| Size | Lines | Files | Review complexity |
|---|---|---|---|
| XS | < 50 | 1-2 | Trivial: minor typos, documentation, or config tweaks |
| S | 50-200 | 3-5 | Ideal: single bug fix or small, focused feature |
| M | 200-400 | 6-10 | Standard: complete feature or logical refactor |
| L | 400-1k | 11-20 | Warning: high cognitive load, reviewers may start skimming |
| XL | 1k-2k | 20+ | Critical: likely needs to be split into smaller, independent PRs |
| XXL | 2k+ | 50+ | Dangerous: defect detection drops significantly |
Use whichever dimension gives the larger size (e.g., 3 files but 500 lines = L).
