gsd-task-manager: Skill for Claude Code

.agents/skills/reviewable-pr-slicing/SKILL.md

reviewable-pr-slicing is a skill for Claude Code, Codex from vscarpenter/gsd-task-manager. It costs 68 tokens per session (905 once invoked), scanned A, original, MIT.

A planning method for splitting a large software change into several small pull requests, each covering a clear phase.

In plain words
What is it for?
Use it to turn an approved plan into small changes with validation checks, review-focused descriptions, manual acceptance tests, and rollback notes.
Why use it?
It makes broad refactors, security fixes, and mixed documentation-and-code work easier to review and safer to roll back.

Skill for Claude CodeCodex

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is vscarpenter/gsd-task-manager's own configuration. It tells Claude Code and Codex how to work on gsd-task-manager itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything gsd-task-manager configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vscarpenter/gsd-task-manager. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/vscarpenter/gsd-task-manager/main/.agents/skills/reviewable-pr-slicing/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/vscarpenter/gsd-task-manager

Made for: Claude Code, Codex.

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.

agentmods badge for reviewable-pr-slicing

README.md
[![agentmods](https://agentmods.dev/badge/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing/github.svg)](https://agentmods.dev/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing)
Your own site
<a href="https://agentmods.dev/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing"><img src="https://agentmods.dev/badge/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing/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.

agentmods 80×15 button for reviewable-pr-slicing

Your own site · 80×15
<a href="https://agentmods.dev/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing"><img src="https://agentmods.dev/badge/skills/vscarpenter/gsd-task-manager/reviewable-pr-slicing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 905 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.00905
Opus 5 $0.00034 $0.00452
Sonnet 5 $0.00014 $0.00181
Haiku 4.5 $0.00007 $0.00090

Measured 10d ago against content hash c20570f40a04, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

reviewable-pr-slicing 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 10d 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.

.agents/skills/reviewable-pr-slicing/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

reviewable-pr-slicing

Use this skill when a plan is ready to implement, but the work should be split into small PRs instead of one broad change.

This skill only changes repository artifacts. It may document manual prerequisites, but it must not perform external account setup, store secrets, or change settings outside the repo.

Good fits

  • A plan that already has goals, non-goals, and a target state.
  • Work that affects multiple layers, such as scripts, workflows, docs, tests, and runtime code.
  • Security findings that should land as narrow remediation tranches.
  • Refactors that need behavior-preserving setup before behavior-changing work.
  • Documentation plus implementation rollouts where reviewers need a clean breadcrumb trail.

Do not use this for tiny fixes, speculative ideas, or work without a clear stopping condition.

Required inputs

Before editing code, collect:

  1. Approved plan or issue path.
  2. Current behavior and affected surfaces.
  3. Goals and non-goals.
  4. Locked decisions and open decisions.
  5. Manual prerequisites the human must complete outside the repo.
  6. Validation commands.
  7. Manual acceptance tests.
  8. Rollback or fallback posture.

If these are missing, add them to the plan first and stop before implementation.

Phase design rules

  • Keep each PR independently understandable.
  • Prefer one concern per PR.
  • Put plan-only documentation before implementation.
  • Put shared foundations before files that consume them.
  • Put read-only validation before write-path changes.
  • Put lower-risk environments or paths before higher-risk ones.
  • Keep manual prerequisites explicit and separate from code behavior.
  • Stop after the current phase. Do not sneak in the next phase.

Default phase pattern

Adapt the names to the work, but start here:

  1. Plan PR — canonical plan, options, decisions, phase list. No behavior change.
  2. Foundation PR — shared helpers, scripts, types, or docs scaffolding. Preserve behavior.
  3. Validation PR — checks, tests, assertions, or reports that make later change safer.
  4. First behavior PR — narrow live behavior change with the smallest blast radius.
  5. Second behavior PR — next scoped behavior change after the first proves clean.
  6. Cleanup PR — remove old paths only after the replacement has been validated.

Read the full file on GitHub · 115 lines

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.

  1. 10d ago First seen · 115 lines · 68 tokens per session scan A c20570f40a04

Subscribe to this mod's changes

reviewable-pr-slicing is a skill published in the GitHub repository vscarpenter/gsd-task-manager (25 stars, last pushed today), licensed MIT. It adds 68 tokens to every session and 905 once invoked, about $0.0003 per session on Opus 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 2026-08-30.

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