Acf Custom Field Type

Q: What is a Claude Code skill and how does the Acf Custom Field Type skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Acf Custom Field Type is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Content · Sub-category: content-misc · Last updated: 2026-09-28

lang:javascript type:review

Builds and reviews custom Advanced Custom Fields field types on the Free acf_field extension API. Covers acf/include_field_types registration, initialize metadata, settings and input rendering, dynamic input names, validation, load/update/format transforms, field-aware HTML escaping, assets, REST visibility, and repeater-compatible JavaScript initialization. Use when a built-in ACF field cannot represent the editor control or stored value, when extending acf_field, or when a custom field saves correctly but formats, validates, repeats, or renders unsafely.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

The acf_field extension API is available in ACF Free and PRO. A custom field type should solve a distinct input/value contract, not merely restyle a Text or Select field. Prefer a built-in field plus targeted filters when its raw value, validation, and return format already fit.

What this skill does

Acf Custom Field Type is a community-contributed Claude Code skill in the content-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/acf-custom-field-type/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a built-in ACF field cannot represent the editor control or stored value, when extending acf_field, or when a custom field saves correctly but formats, validates, repeats, or renders unsafely.

Who uses this skill

The Acf Custom Field Type Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/acf-custom-field-type
curl -L https://claudskills.com/skills/acf-custom-field-type/SKILL.md \
  -o ~/.claude/skills/acf-custom-field-type/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/acf-custom-field-type/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/acf-custom-field-type/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\acf-custom-field-type\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Acf Custom Field Type Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/acf-custom-field-type/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Acf Custom Field Type skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Acf Custom Field Type skill?

Use Acf Custom Field Type when your Claude Code task falls under the Content category — specifically in the content misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Acf Custom Field Type" or describe the task and let Claude pick). Browse related skills at /category/content/.

What is a Claude Code skill and how does the Acf Custom Field Type skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Acf Custom Field Type is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/Lonsdale201/wp-agent-skills/blob/c51b571a259f0c4b5f5c0a3bc50ed580c6851f98/acf/acf-custom-field-type/SKILL.md
License: MIT
Author: Lonsdale201

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Lonsdale201. (2026). Acf Custom Field Type [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/acf-custom-field-type/

BibTeX

@misc{acf-custom-field-type-2026,
  author    = {Lonsdale201},
  title     = {Acf Custom Field Type [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/acf-custom-field-type/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

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Security scan

Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/acf-custom-field-type/#security)