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 skills add fugazi/test-automation-skills-agents --skill api-testinggit clone --depth 1 https://github.com/fugazi/test-automation-skills-agentsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/fugazi/test-automation-skills-agents/api-testing)<a href="https://agentmods.dev/skills/fugazi/test-automation-skills-agents/api-testing"><img src="https://agentmods.dev/badge/skills/fugazi/test-automation-skills-agents/api-testing/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/fugazi/test-automation-skills-agents/api-testing"><img src="https://agentmods.dev/badge/skills/fugazi/test-automation-skills-agents/api-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00078 | $0.01247 |
| Opus 5 | $0.00039 | $0.00624 |
| Sonnet 5 | $0.00016 | $0.00249 |
| Haiku 4.5 | $0.00008 | $0.00125 |
Grade A, and why
api-testing 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 9d 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 — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Testing (Playwright + REST Assured)
Comprehensive API testing skill covering both Playwright TypeScript (request fixture, Supertest, Zod) and Java (REST Assured, AssertJ, JSON Schema Validator).
When to Use This Skill
- Create API tests for REST or GraphQL endpoints
- Validate request/response schemas (Zod, JSON Schema)
- Test authentication flows (OAuth2, JWT, API keys, Bearer tokens)
- Verify error handling (400, 401, 403, 404, 409, 422, 500)
- Test pagination, filtering, sorting edge cases
- Validate idempotency for PUT/DELETE operations
- Contract testing between services
- Rate limiting validation
Do NOT Use For
- Browser-driven UI flows (use
playwright-e2e-testingfor Playwright specs, orwebapp-selenium-testingfor Selenium) - Live interactive browser sessions or snapshots (use
playwright-cli) - Visual/layout regression (out of scope — no DOM)
- End-to-end journeys that must drive a real browser across pages
Prerequisites
| Stack | Requirements |
|---|---|
| TypeScript | Node.js 18+, @playwright/test or supertest, zod |
| Java | Java 21+, REST Assured 5.x, AssertJ, Jackson, json-schema-validator |
Core Principles
- Schema validation on every response — never trust an unvalidated response
- Test all HTTP status codes — happy path AND error states
- Auth testing is mandatory — verify 401/403 for protected endpoints
- Data-driven — test with valid, invalid, boundary, and empty values
- Stateless where possible — each test cleans up or uses unique data
Quick Reference — Playwright
import { test, expect } from "@playwright/test";
test("GET /api/users returns 200 with valid schema", async ({ request }) => {
const response = await request.get("/api/users");
expect(response.ok()).toBeTruthy();
const body = await response.json();
expect(body).toMatchObject({ data: expect.any(Array) });
});
What ships with it
9 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.
- LICENSE.txt 1.0 KB
- references/contract-testing.md 3.4 KB
- references/playwright-api-testing.md 3.9 KB
- references/rest-api-patterns.md 3.0 KB
- references/rest-assured-testing.md 4.3 KB
- references/schema-validation.md 3.1 KB
- scripts/api-health-check.sh 913 B runs code
- templates/playwright-api-spec.ts 1.5 KB runs code
- templates/rest-assured-test.java 1.8 KB
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.
- 9d ago First seen · 135 lines · 78 tokens per session scan A d3ba019779c1
api-testing is a skill published in the GitHub repository fugazi/test-automation-skills-agents (233 stars, last pushed 6d ago), licensed MIT. It adds 78 tokens to every session and 1,247 once invoked, about $0.0004 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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