wicked-garden-engineering-patch

wicked-garden-engineering-patch is a skill for Claude Code, Codex from mikeparcewski/wicked-garden. It costs 177 tokens per session (2,073 once invoked), scanned A, original, MIT.

Code-change guidance for adding, renaming, or removing fields and symbols across a codebase. It uses a map of code relationships to identify affected files and usages.

In plain words
What is it for?
Use it to preview affected code, propagate a new entity field, rename symbols across files, remove fields, and apply saved change patches.
Why use it?
It reduces the chance that a change is applied in one place but leaves broken or outdated references elsewhere.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the wicked-garden plugin — 153 skills, 5 commands, 2 agents, 13 hooks shipped together

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.

agentmods
npx agentmods add skills/mikeparcewski/wicked-garden/patch
Any agent
npx skills add mikeparcewski/wicked-garden --skill patch
Clone the repo
git clone --depth 1 https://github.com/mikeparcewski/wicked-garden

Made for: Claude Code, Codex.

Or install wicked-garden, the plugin that ships this one along with the rest of its 153 skills, 5 commands, 2 agents, 13 hooks.

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 wicked-garden-engineering-patch

README.md
[![agentmods](https://agentmods.dev/badge/skills/mikeparcewski/wicked-garden/patch.svg)](https://agentmods.dev/skills/mikeparcewski/wicked-garden/patch)
Your own site
<a href="https://agentmods.dev/skills/mikeparcewski/wicked-garden/patch"><img src="https://agentmods.dev/badge/skills/mikeparcewski/wicked-garden/patch.svg" alt="Measured on agentmods" height="20"></a>
Per session 177 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,073 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00177 $0.02073
Opus 5 $0.00088 $0.01037
Sonnet 5 $0.00035 $0.00415
Haiku 4.5 $0.00018 $0.00207

Measured 4d ago against content hash d79e9f6e48ab, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

wicked-garden-engineering-patch 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 4d 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.

skills/engineering/patch/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

wicked-patch

Generate and propagate code changes across your entire codebase using the symbol graph.

All sub-actions run the patch CLI. The full invocation is:

sh "${CLAUDE_PLUGIN_ROOT}/scripts/_python.sh" "${CLAUDE_PLUGIN_ROOT}/scripts/engineering/patch/patch.py" <sub-action> [args]

Examples below abbreviate this to patch.py <sub-action> … — always run the full form.

The propagation diagram, quick-start recipes, per-action examples, the sample PROPAGATION PLAN / GENERATED PATCHES output, the patches-file JSON schema, and the language/type/SQL-dialect reference tables live in refs/output-samples.md.

Sub-actions

Sub-action Purpose
patch-plan Show what would be affected — propagation preview, no patches
add-field Add field with propagation
rename Rename across all usages
remove Remove field everywhere (DELETES code — see warning)
apply Apply saved patches from a JSON file
new-generator Author a new language generator (refs/new-generator.md)

patch-plan — propagation preview

Show what would be affected by a change without generating patches. Distinct from the engineering domain skill's plan action (a human implementation plan with risks and tests) — patch-plan is the impact preview for mechanical patches. The CLI subcommand is plan.

Arguments: symbol_id (required — symbol to analyze); --change (add_field | rename_field | remove_field | modify_field); --depth (max traversal depth, default 5); --json (output as JSON).

sh "${CLAUDE_PLUGIN_ROOT}/scripts/_python.sh" "${CLAUDE_PLUGIN_ROOT}/scripts/engineering/patch/patch.py" plan "<symbol_id>" --change "<change_type>" [--json]

See refs/output-samples.md for examples and the sample PROPAGATION PLAN output.

add-field — add a field and propagate

Add a field to an entity/class and propagate to all affected files.

Read the full file on GitHub · 191 lines

Files

What ships with it

2 files 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.

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. 4d ago First seen · 191 lines · 177 tokens per session scan A d79e9f6e48ab

Subscribe to this mod's changes

wicked-garden-engineering-patch is a skill published in the GitHub repository mikeparcewski/wicked-garden (9 stars, last pushed today), licensed MIT. It adds 177 tokens to every session and 2,073 once invoked, about $0.0009 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 2026-08-31.

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