api-tester

api-tester is a plugin for Claude Code from ccplugins/awesome-claude-code-plugins. Its manifest loads nothing; the 1 agent it bundles cost 0 tokens per session together, scanned A, original, Apache-2.0.

An agent for testing application programming interfaces (APIs), which are the endpoints software uses to exchange data. It covers functional, performance, load, and contract testing.

In plain words
What is it for?
Checking API behaviour against specifications, testing response speed and reliability under load, and verifying that services continue to match their agreed contracts.
Why use it?
An API can return incorrect results, break its agreed interface, or slow down when many users call it. Testing helps reveal these problems before deployment.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Checking API behaviour against specifications, testing response speed and reliability under load, and verifying that services continue to match their agreed contracts.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add ccplugins/awesome-claude-code-plugins
/plugin install api-tester
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.

Clone the repo
git clone --depth 1 https://github.com/ccplugins/awesome-claude-code-plugins

Made for: Claude Code.

Wrote 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.

agentmods badge for api-tester

README.md
[![agentmods](https://agentmods.dev/badge/plugins/ccplugins/awesome-claude-code-plugins/api-tester/github.svg)](https://agentmods.dev/plugins/ccplugins/awesome-claude-code-plugins/api-tester)
Your own site
<a href="https://agentmods.dev/plugins/ccplugins/awesome-claude-code-plugins/api-tester"><img src="https://agentmods.dev/badge/plugins/ccplugins/awesome-claude-code-plugins/api-tester/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.

agentmods 80×15 button for api-tester

Your own site · 80×15
<a href="https://agentmods.dev/plugins/ccplugins/awesome-claude-code-plugins/api-tester"><img src="https://agentmods.dev/badge/plugins/ccplugins/awesome-claude-code-plugins/api-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 agent cost 0 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

api-tester 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 1mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

plugins/api-tester/.claude-plugin/plugin.json · 9 lines

What it actually says

{
  "name": "api-tester",
  "description": "Use this agent for comprehensive API testing including performance testing, load testing, and contract testing. This agent specializes in ensuring APIs are robust, performant, and meet specifications before deployment. Examples:\\n\\n<example>\\nContext: Testing API performance under load",
  "version": "1.0.0",
  "author": {
    "name": "Michael Galpert"
  },
  "homepage": "https://github.com/ccplugins/awesome-claude-code-plugins/tree/main/plugins/api-tester"
}
Contents

What it installs

The manifest is a name and a version. 1 agent travel with it, and installing the plugin installs all of them — 0 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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.

  1. 1mo ago First seen · 9 lines scan A 5a9aa6cc1f48

Subscribe to this mod's changes

api-tester is a plugin published in the GitHub repository ccplugins/awesome-claude-code-plugins (974 stars, last pushed 2mo ago), licensed Apache-2.0. 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 2026-08-30.

Related

Other plugins, from other repositories

api-tester

Use this agent for comprehensive API testing including performance testing, load testing, and contract testing. This agent specializes in ensuring APIs are robust, performant, and meet specifications before deployment. Examples:\n\n \nContext: Testing API performance under load.

xbim08/awesome-claude-code-plugins · not measured

enterprise-integrator-architect

Use this agent when you need to design and implement complex external enterprise system integrations for B2B applications. This agent specializes in connecting your platform with Salesforce, HubSpot, Microsoft 365, Google Workspace, SAP, Oracle ERP, and other critical third-party business software. Handles external…

xbim08/awesome-claude-code-plugins · not measured

openapi-expert

Use this agent to update, synchronize, or validate the OpenAPI specification (openapi.yml) against the actual REST API implementation. This includes adding new endpoints, updating request/response schemas, fixing discrepancies between the spec and code, or ensuring complete API documentation coverage.

xbim08/awesome-claude-code-plugins · not measured

generate-api-docs

Generate API documentation for endpoints.

xbim08/awesome-claude-code-plugins · not measured

backend-architect

Use this agent when designing APIs, building server-side logic, implementing databases, or architecting scalable backend systems. This agent specializes in creating robust, secure, and performant backend services. Examples:\n\n \nContext: Designing a new API\nuser: "We need an API for our social sharing feature.

xbim08/awesome-claude-code-plugins · not measured

code-architect

Use this agent when you need to design scalable architecture and folder structures for new features or projects. Examples include: when starting a new feature module, refactoring existing code organization, planning microservice boundaries, designing component hierarchies, or establishing project structure conventions.

xbim08/awesome-claude-code-plugins · not measured