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/manhvann/codexkit/testnpx skills add manhvann/codexkit --skill testgit clone --depth 1 https://github.com/manhvann/codexkitWhat 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 | $0.00034 | $0.00974 |
| Opus 5 | $0.00017 | $0.00487 |
| Sonnet 5 | $0.00007 | $0.00195 |
| Haiku 4.5 | $0.00003 | $0.00097 |
Grade A, and why
ck:test 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.
How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Testing & Quality Assurance
Comprehensive testing framework covering code-level testing (unit, integration, e2e), UI/visual testing via browser automation, coverage analysis, and structured QA reporting.
Default (No Arguments)
If invoked with context (test scope), proceed with testing. If invoked WITHOUT arguments, ask the user to choose available test operations:
| Operation | Description |
|---|---|
(default) |
Run unit/integration/e2e tests |
ui |
Run UI tests on a website |
Present options with header "Test Operation", question "What would you like to do?".
Core Principle
NEVER IGNORE FAILING TESTS. Fix root causes, not symptoms. No mocks/cheats/tricks to pass builds.
When to Use
- After implementation: Validate new features or bug fixes
- Coverage checks: Ensure coverage meets project thresholds (80%+)
- UI verification: Visual regression, responsive layout, accessibility
- Build validation: Verify build process, dependencies, CI/CD compatibility
- Pre-commit/push: Final quality gate
Workflows
1. Code Testing (references/test-execution-workflow.md)
Execute test suites, analyze results, generate coverage. Supports JS/TS (Jest/Vitest/Mocha), Python (pytest), Go, Rust, Flutter. Includes working process, quality standards, and tool commands.
Load when: Running unit/integration/e2e tests, checking coverage, validating builds
2. UI Testing (references/ui-testing-workflow.md)
Browser-based visual testing via ck:chrome-devtools skill. Screenshots, responsive checks, accessibility audits, form automation, console error collection. Includes auth injection for protected routes.
Load when: Visual regression testing, UI bugs, responsive layout checks, accessibility audits
3. Report Format (references/report-format.md)
Structured QA report template: test results overview, coverage metrics, failed tests, performance, build status, recommendations.
Load when: Generating test summary reports
What ships with it
3 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 · 110 lines · 34 tokens per session scan A 5381698c0aab
ck:test is a skill published in the GitHub repository manhvann/codexkit (88 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 974 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 2026-08-30.
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