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api-tester

Quick API endpoint testing using curl with structured output

Skill by Mr-Wolv

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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/mr-wolv-api-tester

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Quick API endpoint testing using curl with structured output

Use cases: backend, testing

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/api-tester

What's inside

Skill name
api-tester
Description
Quick API endpoint testing using curl with structured output
License
MIT
Instructions
43 lines in SKILL.md · view on GitHub

Before installing

  • Instructions call the network

Files (1)

  • SKILL.md

SKILL.md (first lines)

# API Tester

Interactive API testing tool that constructs and executes HTTP requests.

## When to use

- Quick manual testing of an API endpoint during development
- Debugging a failing request
- Verifying API behavior without a dedicated client

## Instructions

1. **Ask for the endpoint details** — method (GET, POST, PUT, DELETE, PATCH), URL, headers, body
2. **Construct the curl command** with proper flags:
   - `-X METHOD` for HTTP method
   - `-H "Header: value"` for each header
   - `-d '{"key": "value"}'` for JSON body
   - `-v` for verbose output (include response headers)
3. **Execute and display results** — show status code, response headers, and body
4. **Format the response** — pretty-print JSON, show timing information

## Example

```bash
# POST to create a resource
curl -X POST http://localhost:3000/shorten \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com"}' \
  -w "\n\n⏱ Timing: %{time_total}s\n"

# GET with verbose output
curl -v http://localhost:3000/abc1234
```

## Common scenarios

- **Auth testing**: `-H "Authorization: Bearer <token>"`
- **File upload**: `-F "file=@path/to/file"`
- **Query params**: `"http://localhost:3000/api?page=1&limit=10"`
- **Follow redirects**: `-L` flag
- **Custom timeout**: `--connect-timeout 5 --max-time 10`

From Mr-Wolv/Skill_Playground_Bakr101_2026, MIT.

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Last commit (this folder)
Jul 7, 2026 (3 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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api-tester skill. Agent Mart. https://agentmart.dev/skills/mr-wolv-api-tester (last updated 2026-10-24)