A package for testing web APIs, which are interfaces that let software communicate over HTTP. It also covers mock responses, documentation, and automatic test creation.

Use it to test REST or other HTTP endpoints, simulate external services, create API documentation, and generate tests.

It helps check an API without relying on every real service or manually writing every test. Mocking means using simulated responses during testing.

api-testing — Plugin by cyperx84

Install

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.

Claude Code

/plugin marketplace add cyperx84/claude-code-plugin-examples

agentmods

npx agentmods add plugins/cyperx84/claude-code-plugin-examples/api-testing-plugin

Clone the repo

git clone --depth 1 https://github.com/cyperx84/claude-code-plugin-examples

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

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 yesterday.

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.

examples/04-real-world/api-testing-plugin/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "api-testing",
  "version": "2.0.0",
  "description": "API testing, mocking, and documentation with automated test generation",
  "author": {
    "name": "Real-World Examples"
  },
  "keywords": ["api", "testing", "rest", "http", "mock", "real-world"],
  "license": "MIT"
}

Changes

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.

yesterday First seen · 11 lines scan A 7a9d6dad368c

Subscribe to this mod's changes

api-testing is a plugin published in the GitHub repository cyperx84/claude-code-plugin-examples (2 stars, last pushed 10mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Backend and APIs Testing Writing and docs

api-testing

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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