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 agentmods add skills/wordpress/core-contributor-skills/unit-testsnpx skills add WordPress/core-contributor-skills --skill unit-testsgit clone --depth 1 https://github.com/WordPress/core-contributor-skillsWhat 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 | $0.00048 | $0.04567 |
| Opus 5 | $0.00024 | $0.02284 |
| Sonnet 5 | $0.00010 | $0.00913 |
| Haiku 4.5 | $0.00005 | $0.00457 |
Grade A, and why
unit-tests 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 2d 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.
The source is not reproduced here
Licensed GPL-2.0
The repository is licensed GPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
2 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.
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.
- 2d ago First seen · 316 lines · 48 tokens per session scan A fd0eb59ee764
unit-tests is a skill published in the GitHub repository WordPress/core-contributor-skills (10 stars, last pushed 6d ago), licensed GPL-2.0. It adds 48 tokens to every session and 4,567 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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write-tests
Write failing tests from requirements. Invoke for each todo before /implement.
dart-add-unit-test
Write and organize unit tests for functions, methods, and classes using package:test. Use when creating new logic or fixing bugs to ensure code remains correct and regression-free.
go-testing
Trigger: Go tests, go test coverage, Bubbletea teatest, golden files. Apply focused Go testing patterns.
dart-test
DART Test: unit tests, integration tests, CI validation, and debugging.
myco:runtime-bootstrap-and-test-isolation
Activate this skill when adding a new manager, adding a new tool category, writing or debugging tool unit tests, diagnosing tool-visibility failures, investigating startup performance, or extending/maintaining/debugging the two-tier tool discovery system (toolindex) — even if the user doesn't explicitly ask about the…