gza-plan-improve

gza-plan-improve is a skill for Claude Code from mhawthorne/gza. It costs 27 tokens per session (1,248 once invoked), scanned A, original, MIT.

A planning aid that turns a rough software task plan into a clearer implementation plan by asking focused questions and rewriting it.

In plain words
What is it for?
Use it to improve a plan supplied as task ID or text, confirm assumptions, and list remaining blockers.
Why use it?
It helps uncover missing scope, success conditions, ordering, risks, and testing details before coding starts.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Good fit Use it to improve a plan supplied as task ID or text, confirm assumptions, and list remaining blockers.

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Install with agentmods
npx agentmods add skills/mhawthorne/gza/gza-plan-improve
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 mhawthorne/gza --skill gza-plan-improve
Clone the repo
git clone --depth 1 https://github.com/mhawthorne/gza

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.

agentmods badge for gza-plan-improve

README.md
[![agentmods](https://agentmods.dev/badge/skills/mhawthorne/gza/gza-plan-improve/github.svg)](https://agentmods.dev/skills/mhawthorne/gza/gza-plan-improve)
Your own site
<a href="https://agentmods.dev/skills/mhawthorne/gza/gza-plan-improve"><img src="https://agentmods.dev/badge/skills/mhawthorne/gza/gza-plan-improve/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 gza-plan-improve

Your own site · 80×15
<a href="https://agentmods.dev/skills/mhawthorne/gza/gza-plan-improve"><img src="https://agentmods.dev/badge/skills/mhawthorne/gza/gza-plan-improve.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,248 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 $0.00027 $0.01248
Opus 5 $0.00014 $0.00624
Sonnet 5 $0.00005 $0.00250
Haiku 4.5 $0.00003 $0.00125

Measured 10d ago against content hash 390f5ee3778e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

gza-plan-improve 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.

src/gza/skills/gza-plan-improve/SKILL.md · 179 lines

How it starts

The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gza Plan Improve

Refine a draft plan through a deliberate question loop. Use this when the user has a rough plan, an incomplete completed plan task, or a draft that needs sharper scope, acceptance criteria, sequencing, risks, and test strategy before implementation begins.

Inputs

Accept one of these inputs:

  • Preferred: a full prefixed plan task ID (for example, gza-1234)
  • Also supported: pasted draft plan text
  • Optional: extra constraints, related task IDs, or notes about what feels weak

If the user provides neither a full prefixed plan task ID nor draft plan text, ask for the current draft or plan task first.

Use the full prefixed task ID for all gza commands.

Goal

Produce an improved plan, not just a score.

The skill should:

  • identify the highest-leverage gaps in the current draft
  • ask concise questions to close those gaps
  • confirm assumptions explicitly instead of guessing
  • rewrite the plan into a cleaner, more implementation-ready shape
  • call out any remaining blockers or open questions

This is different from /gza-plan-review:

  • /gza-plan-review decides Go / No-go
  • /gza-plan-improve actively helps the user strengthen the plan first

Process

Step 1: Gather the current plan and context

If the input is a full prefixed plan task ID, inspect it with:

uv run gza show <TASK_ID>
uv run gza log <TASK_ID>

Use that output to extract:

  • task type and status
  • original prompt
  • current plan/report content
  • nearby context from logs that explains uncertainty, blockers, or assumptions

If the task is not found or is not a plan task, stop and explain the mismatch.

If the input is draft text instead of a task ID, use the provided draft as the working plan.

Step 2: Diagnose the weakest parts first

Evaluate the draft against these plan dimensions:

  1. Problem framing
  • Is the user problem or objective specific?
  • Does the draft explain why the work matters?
  1. Scope and boundaries
  • What is explicitly in scope?
  • What is explicitly out of scope?
  • Which files, modules, systems, or surfaces are likely affected?

Read the full file on GitHub · 179 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 · 179 lines · 27 tokens per session scan A 390f5ee3778e

Subscribe to this mod's changes

gza-plan-improve is a skill published in the GitHub repository mhawthorne/gza (12 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 1,248 once invoked, about $0.0001 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.