A workflow for splitting one large pull request, a proposed set of code changes, into several smaller pull requests.

Use it to inspect a branch, suggest logical change groups, choose a base branch, set a target size, and preview or approve the resulting sequence.

Smaller changes are easier to review and merge, while the workflow keeps the user in control of each proposed part and destructive action.

chunk-pr — Skill for Claude Code by mostafa-drz/claude-skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add mostafa-drz/claude-skills --skill chunk-pr

Clone the repo

git clone --depth 1 https://github.com/mostafa-drz/claude-skills

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mostafa-drz/claude-skills/chunk-pr/github.svg)](https://agentmods.dev/skills/mostafa-drz/claude-skills/chunk-pr)

Your own site

<a href="https://agentmods.dev/skills/mostafa-drz/claude-skills/chunk-pr"><img src="https://agentmods.dev/badge/skills/mostafa-drz/claude-skills/chunk-pr/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mostafa-drz/claude-skills/chunk-pr"><img src="https://agentmods.dev/badge/skills/mostafa-drz/claude-skills/chunk-pr.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,029 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00127	$0.04029
Opus 5.5	$0.00051	$0.01612
Sonnet 5.5	$0.00025	$0.00806
Haiku 4.5	$0.00013	$0.00403

Measured 1mo ago against content hash d2fbd666d96c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

chunk-pr scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

code/chunk-pr/SKILL.md · 311 lines

How it starts

The opening of the file, as written. The whole thing — 311 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Chunk PR

Break one big PR into a sequence of small, logical, merge-safe PRs. Suggest, don't decide — the user approves every chunk and every destructive action.

Preferences

Read ~/.claude/skills/chunk-pr/preferences.md using the Read tool. If not found, no preferences are set.

Context

On startup, use Bash to detect: current branch (git branch --show-current), base upstream, commits ahead, total lines changed (git diff {base}...HEAD --shortstat), and repo (gh repo view --json nameWithOwner -q .nameWithOwner). Skip any that fail. Do NOT run destructive commands at this stage.

Command routing

Check $ARGUMENTS:

help → display help then stop
config → interactive setup then stop
reset → delete ~/.claude/skills/chunk-pr/preferences.md, confirm, stop
anything else (including empty) → run the chunking workflow

Flags (parsed from `$ARGUMENTS`)

--base <branch> — override target base (default: auto-detect or preference)
--max-lines <N> — target max lines per chunk (default: 400 or preference)
--strategy <kind> — conservative (more/smaller), balanced (default), aggressive (fewer/larger)
--dry-run / --plan-only — stop after presenting the plan; don't create branches or PRs
--draft — open chunks as draft PRs (default)
--ready — open chunks as ready-for-review (overrides --draft)
--no-push — create local branches only, skip push/PR creation
--no-linear — skip Linear linking
Positional — PR number (e.g. 234), PR URL, branch name, or commit range (main..HEAD). If omitted, use current branch.

Help

Chunk PR — Split a big PR into a sequence of smaller, merge-safe ones

Usage:
  /chunk-pr                                Analyze current branch
  /chunk-pr <pr-number>                    Analyze a specific PR
  /chunk-pr <pr-url>                       Analyze a PR by URL (same or other repo)
  /chunk-pr <branch>                       Analyze a local branch
  /chunk-pr main..HEAD                     Analyze a commit range
  /chunk-pr --max-lines 300                Prefer chunks under 300 lines
  /chunk-pr --strategy conservative        More, smaller chunks
  /chunk-pr --dry-run                      Plan only — don't touch git
  /chunk-pr config                         Set preferences
  /chunk-pr reset                          Clear preferences
  /chunk-pr help                           This help

What it does:
  1. Identify the subject PR / branch / range
  2. Classify commits and files into logical groups
  3. Propose an ordered, dependency-aware split plan
  4. Let you approve, reorder, merge, or re-split chunks
  5. On approval, create branches + draft PRs + Linear links
  6. Leave the parent branch untouched

Current preferences:
  (shown above under Preferences)

Read the full file on GitHub · 311 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

icon.svg 1004 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago Changed · +3 lines · +127 tokens per session d2fbd666d96c
1mo ago First seen · 308 lines · 0 tokens per session scan A 3d41107f583c

Subscribe to this mod's changes

chunk-pr is a skill published in the GitHub repository mostafa-drz/claude-skills (4 stars, last pushed yesterday), licensed MIT. It adds 127 tokens to every session and 4,029 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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