Apex System Runas

Q: What is a Claude Code skill and how does the Apex System Runas 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. Apex System Runas is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Dev Tools · Sub-category: tools-misc · Last updated: 2026-05-21

System.runAs in Apex tests: user-context impersonation, mixed-DML workaround, profile/permission testing, sharing verification, FLS NOT enforced, runAs nesting limits. NOT for general test setup (use apex-test-setup-patterns). NOT for WITH USER_MODE SOQL (use apex-user-mode-patterns).

About this skill (catalog notes)

Apex System Runas includes 6 code blocks for direct copy-paste. The SKILL.md runs to about 835 words, in the catalog's typical mid-range.

Original author: Pranav Nagrecha
Indexed lastmod: 2026-05-21
Catalog position: Dev Tools · tools-misc
Indexed related skills: 10

How Apex System Runas fits the catalog

Apex System Runas sits in the Dev Tools category under the tools-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Activate when writing Apex tests that need to exercise a specific user's perspective — profile, permission set, role, sharing context — or when unblocking mixed-DML errors in @TestSetup. System.runAs impersonates a target user for the scope of a block and flushes setup-object DML. Known caveat: FLS is NOT enforced inside runAs.

What this skill does

Apex System Runas is a community-contributed Claude Code skill in the tools-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/apex-system-runas/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Apex System Runas Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ 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/apex-system-runas
curl -L https://claudskills.com/skills/apex-system-runas/SKILL.md \
  -o ~/.claude/skills/apex-system-runas/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/apex-system-runas/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/apex-system-runas/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\apex-system-runas\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 Apex System Runas Claude Code skill?

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

What does the Apex System Runas 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 Apex System Runas skill?

Use Apex System Runas when your Claude Code task falls under the Dev Tools category — specifically in the tools 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 Apex System Runas" or describe the task and let Claude pick). Browse related skills at /category/tools/.

What is a Claude Code skill and how does the Apex System Runas 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. Apex System Runas is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Author: Pranav Nagrecha

Cite this skill

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

APA

Pranav Nagrecha. (2026). Apex System Runas [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/apex-system-runas/

BibTeX

@misc{apex-system-runas-2026,
  author    = {Pranav Nagrecha},
  title     = {Apex System Runas [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/apex-system-runas/}
}

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