block-theme

Guidelines for WordPress Full Site Editing block themes. These themes let site owners build and edit the whole site with WordPress blocks, including page layouts and reusable site parts.

In plain words
What is it for?
Use them when building or reviewing a WordPress theme intended for Full Site Editing.
Why use it?
They give developers rules for creating a block-based WordPress theme instead of relying on undocumented conventions. The input does not provide the individual guidelines.

Cursor rule for Cursor

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 rules/andreilupu/wp-cursor-rules/block-theme
Clone the repo
git clone --depth 1 https://github.com/andreilupu/wp-cursor-rules

Made for: Cursor.

Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,208 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. Scan, not verified.
Origin unknown 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 $0.00016 $0.04208
Opus 5 $0.00008 $0.02104
Sonnet 5 $0.00003 $0.00842
Haiku 4.5 $0.00002 $0.00421

Measured yesterday against content hash 3d5f93713267, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

block-theme scanned grade C with 1 finding 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- wp:query {"queryId":1,"query":{"perPage":10,"pages":0,"offset":0,"postType":"post","order":"desc","orderBy":"date","author":"","search":"","exclude":[],"sticky":"","inherit":true}} -->
examples/theme/.cursor/rules/block-theme.mdc · 578 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 578 lines · 16 tokens per session scan C 3d5f93713267

Subscribe to this mod's changes

block-theme is a cursor rule published in the GitHub repository andreilupu/wp-cursor-rules (4 stars, last pushed 1y ago), licensed GPL-3.0. It adds 16 tokens to every session and 4,208 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.