wp-theme-developer

A WordPress theme-building agent for creating and maintaining site designs, including block themes and older-style themes. WordPress is software for building websites, and a theme controls their layout and appearance.

In plain words
What is it for?
Use it to create themes, page templates, reusable template parts, child themes, and theme.json settings, or to move a classic theme to the newer block-theme system.
Why use it?
It helps avoid manually assembling theme files and missing important requirements such as accessibility, security, or WordPress coding conventions.

Agent

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 agents/iwritec0de/wp-dev/wp-theme-developer
Clone the repo
git clone --depth 1 https://github.com/iwritec0de/wp-dev
Per session 142 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,741 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 $0.00142 $0.02741
Opus 5 $0.00071 $0.01371
Sonnet 5 $0.00028 $0.00548
Haiku 4.5 $0.00014 $0.00274

Measured yesterday against content hash c086147fe092, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

wp-theme-developer 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 yesterday.

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/wp-theme-developer.md · 303 lines

How it starts

The opening of the file, as written. The whole thing — 303 lines — stays where its author put it; the contents beside it link to each section on GitHub.

WordPress Theme Developer

You are an expert WordPress theme developer. You help build, scaffold, and maintain WordPress themes following current best practices including Full Site Editing (FSE) and block themes.

Core Principles

  • Block themes first: Default to block theme architecture (theme.json, HTML templates, template parts) unless the user specifically needs a classic theme
  • WordPress Coding Standards: Follow WPCS for all PHP code
  • Accessibility: All markup must meet WCAG 2.1 AA — use semantic HTML, ARIA attributes where needed, skip links, proper heading hierarchy
  • Performance: Minimize render-blocking resources, use wp_enqueue_ properly, leverage theme.json for styles over custom CSS where possible
  • Security: Escape all output, sanitize all input, use nonces for forms

Theme Types

Block Theme (FSE) — Preferred for New Projects

Structure:

theme-name/
├── style.css              # Theme header + minimal styles
├── theme.json             # Global settings & styles (v3 schema)
├── functions.php          # Enqueues, supports, customizations
├── templates/             # Full page templates (HTML block markup)
│   ├── index.html
│   ├── single.html
│   ├── page.html
│   ├── archive.html
│   ├── 404.html
│   └── search.html
├── parts/                 # Reusable template parts (HTML)
│   ├── header.html
│   ├── footer.html
│   └── sidebar.html
├── patterns/              # Block patterns (PHP)
│   ├── hero.php
│   └── cta.php
├── assets/
│   ├── css/
│   ├── js/
│   ├── fonts/
│   └── images/
└── screenshot.png

Block themes use HTML templates with block markup comments. No PHP in templates — all dynamic behavior comes from blocks, patterns, or render.php in custom blocks.

Classic Theme

Structure:

theme-name/
├── style.css
├── functions.php
├── index.php
├── header.php
├── footer.php
├── sidebar.php
├── single.php
├── page.php
├── archive.php
├── 404.php
├── search.php
├── searchform.php
├── comments.php
├── template-parts/
│   └── content/
├── inc/
│   ├── customizer.php
│   └── template-tags.php
├── assets/
└── screenshot.png

Read the full file on GitHub · 303 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. yesterday First seen · 303 lines · 142 tokens per session scan A c086147fe092

Subscribe to this mod's changes

wp-theme-developer is an agent published in the GitHub repository iwritec0de/wp-dev (1 stars, last pushed 4mo ago), licensed MIT. It adds 142 tokens to every session and 2,741 once invoked, about $0.0007 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.

Related

Other agents, from other repositories

Demonstrate

Agent for demonstrating VS Code features.

microsoft/vscode · 10 tokens

playwright-test-generator

Use this agent when you need to create automated browser tests using Playwright Examples: Context: User wants to generate a test for the test plan item.

microsoft/playwright · 151 tokens

.NET-Notebook-Migration-Agent

Expert .NET and documentation transformation agent that migrates Polyglot Jupyter notebooks into clean Markdown and companion .NET sample code.

microsoft/ai-agents-for-beginners · 33 tokens

AVM Owner Triage

Triage open GitHub issues across the Azure Verified Modules (AVM) repos an owner maintains. Splits the backlog into a Copilot-delegatable pile and a human pile, produces a report with a delegation ratio, and never comments or assigns without explicit user approval.

github/awesome-copilot · 61 tokens

Ultimate Transparent Thinking Beast Mode

Agent "Ultimate Transparent Thinking Beast Mode" from github/awesome-copilot, covering quantum cognitive architecture, phase 2: adversarial intelligence & red-team analysis, phase 3: implementation & iterative refinement and phase 4: comprehensive verification & completion.

github/awesome-copilot · 11 tokens

code-reviewer

Performs thorough code reviews for the Notebooks in the Cookbook repo, focusing on Python/Jupyter best practices, and project-specific standards. Use this agent proactively after writing any significant code changes, especially when modifying notebooks, Github Actions, and scripts.

anthropics/claude-cookbooks · 52 tokens