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.
npx skills add eugenepyvovarov/mcpbundler-agent-skills-marketplace --skill wp-block-developmentgit clone --depth 1 https://github.com/eugenepyvovarov/mcpbundler-agent-skills-marketplaceWrote 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.
[](https://agentmods.dev/skills/eugenepyvovarov/mcpbundler-agent-skills-marketplace/wp-block-development)<a href="https://agentmods.dev/skills/eugenepyvovarov/mcpbundler-agent-skills-marketplace/wp-block-development"><img src="https://agentmods.dev/badge/skills/eugenepyvovarov/mcpbundler-agent-skills-marketplace/wp-block-development/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.
<a href="https://agentmods.dev/skills/eugenepyvovarov/mcpbundler-agent-skills-marketplace/wp-block-development"><img src="https://agentmods.dev/badge/skills/eugenepyvovarov/mcpbundler-agent-skills-marketplace/wp-block-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00067 | $0.01451 |
| Opus 5.5 | $0.00027 | $0.00580 |
| Sonnet 5.5 | $0.00013 | $0.00290 |
| Haiku 4.5 | $0.00007 | $0.00145 |
Grade A, and why
wp-block-development 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 1mo 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.
This is a copy
100% identical to wp-block-development — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
WP Block Development
When to use
Use this skill for block work such as:
- creating a new block, or updating an existing one
- changing
block.json(scripts/styles/supports/attributes/render/viewScriptModule) - fixing “block invalid / not saving / attributes not persisting”
- adding dynamic rendering (
render.php/render_callback) - block deprecations and migrations (
deprecatedversions) - build tooling for blocks (
@wordpress/scripts,@wordpress/create-block,wp-env)
Inputs required
- Repo root and target (plugin vs theme vs full site).
- The block name/namespace and where it lives (path to
block.jsonif known). - Target WordPress version range (especially if using modules /
viewScriptModule).
Procedure
0) Triage and locate blocks
- Run triage:
node skills/wp-project-triage/scripts/detect_wp_project.mjs
- List blocks (deterministic scan):
node skills/wp-block-development/scripts/list_blocks.mjs
- Identify the block root (directory containing
block.json) you’re changing.
If this repo is a full site (wp-content/ present), be explicit about which plugin/theme contains the block.
1) Create a new block (if needed)
If you are creating a new block, prefer scaffolding rather than hand-rolling structure:
- Use
@wordpress/create-blockto scaffold a modern block/plugin setup. - If you need Interactivity API from day 1, use the interactive template.
Read:
references/creating-new-blocks.md
After scaffolding:
- Re-run the block list script and confirm the new block root.
- Continue with the remaining steps (model choice, metadata, registration, serialization).
2) Ensure apiVersion 3 (WordPress 6.9+)
WordPress 6.9 enforces apiVersion: 3 in the block.json schema. Blocks with apiVersion 2 or lower trigger console warnings when SCRIPT_DEBUG is enabled.
Why this matters:
- WordPress 7.0 will run the post editor in an iframe regardless of block apiVersion.
- apiVersion 3 ensures your block works correctly inside the iframed editor (style isolation, viewport units, media queries).
What ships with it
11 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.
- references/attributes-and-serialization.md 759 B
- references/block-json.md 2.3 KB
- references/creating-new-blocks.md 1.6 KB
- references/debugging.md 1.3 KB
- references/deprecations.md 665 B
- references/dynamic-rendering.md 685 B
- references/inner-blocks.md 1.2 KB
- references/registration.md 932 B
- references/supports-and-wrappers.md 512 B
- references/tooling-and-testing.md 928 B
- scripts/list_blocks.mjs 2.8 KB runs code
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.
- 1mo ago First seen · 175 lines · 67 tokens per session scan A 0bb162e63148
wp-block-development is a skill published in the GitHub repository eugenepyvovarov/mcpbundler-agent-skills-marketplace (11 stars, last pushed 8mo ago), licensed MIT. It adds 67 tokens to every session and 1,451 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to wp-block-development, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
baocut
A guide for operating BaoCut, a subtitle-editing application, through its bcut command-line tool and project files.
video-production
A workflow for making a complete video from a brief, including its visual style, scenes, images, sound, narration, music mix, and final export.
shorts-segments
A video-editing helper that finds several self-contained short clips in a longer video using its transcript. A transcript is the written text of what is said.
explainer-video
A guide for making explanation, educational, and science videos that people without background knowledge can follow. It covers research, visual metaphors, generated images, code animation, narration, translations, alternate formats, and publishing text.
video-blog
A workflow for turning a video's spoken content into a complete blog or column article that can stand on its own. It can write from the speaker's perspective or report another person's video with attribution.
design-system
A tool for creating or updating a design system: a shared set of colors, text styles, spacing rules, corner shapes, components, images, and fonts.