aer Agent Skills

Agent skills for aer, the Apex Execution Runtime — an Apex interpreter and test runner that runs Apex unit tests locally, without a Salesforce org.

Skills

The aer plugin bundles these skills:

Skill	Description
aer-test	Write and run Apex unit tests with aer test — selecting, configuring, debugging, and interpreting PASS/FAIL output.

Installing the skills

Any coding agent (npx skills)

Install into Claude Code, Cursor, GitHub Copilot, OpenCode, and more with npx skills:

# All skills in the aer plugin
npx skills add octoberswimmer/agent-skills

# Or a single skill
npx skills add octoberswimmer/agent-skills/aer/skills/aer-test

Claude Code plugin

Add the marketplace, then install the aer plugin:

claude plugin marketplace add octoberswimmer/agent-skills
claude plugin install aer@octoberswimmer

Or use the interactive interface:

/plugin

Installing aer

The skills drive the aer CLI, which must be on your PATH. Install it with Homebrew (brew install octoberswimmer/tap/aer) or using a prebuilt archive from aer-dist releases. See https://www.aertest.com/ for all options. Running more than 100 test methods requires a license — start a free trial at https://www.octoberswimmer.com/tools/aer/subscribe/.

Structure

agent-skills/
├── .claude-plugin/
│   └── marketplace.json        # marketplace catalog (name: octoberswimmer)
└── aer/                        # the aer plugin
    ├── .claude-plugin/
    │   └── plugin.json
    └── skills/
        └── aer-test/
            ├── SKILL.md
            └── references/