Imported from terminalskills/skills (skills/hoppscotch/SKILL.md). Install upstream with npx skills add terminalskills/skills --skill hoppscotch. Copyright stays with the author (Apache-2.0).

Hoppscotch

Overview

Hoppscotch is an open-source API development platform — a lightweight, fast alternative to Postman. It supports REST, GraphQL, WebSocket, SSE, Socket.IO, and MQTT. Available as a web app (hoppscotch.io), desktop app, or self-hosted instance.

Instructions

Step 1: Self-Host with Docker

# docker-compose.yml — Self-hosted Hoppscotch
services:
  hoppscotch:
    image: hoppscotch/hoppscotch:latest
    ports:
      - "3000:3000"     # main app
      - "3100:3100"     # admin dashboard
      - "3170:3170"     # backend API
    env_file: .env
    depends_on:
      - postgres

  postgres:
    image: postgres:16
    environment:
      POSTGRES_DB: hoppscotch
      POSTGRES_USER: hoppscotch
      POSTGRES_PASSWORD: ${DB_PASSWORD}
    volumes:
      - pgdata:/var/lib/postgresql/data

volumes:
  pgdata:

Step 2: API Collections with CLI

# Install CLI
npm install -g @hoppscotch/cli

# Run collection from file
hopp test -e environment.json collection.json

# Run from Hoppscotch instance
hopp test --server https://hoppscotch.mycompany.com --token $TOKEN collection-id

Step 3: Pre-request Scripts

// Pre-request script — runs before each request
const token = pw.env.get("AUTH_TOKEN")
const expiry = pw.env.get("TOKEN_EXPIRY")

if (!token || Date.now() > Number(expiry)) {
  const res = await pw.api.post("https://api.example.com/auth/token", {
    body: JSON.stringify({
      client_id: pw.env.get("CLIENT_ID"),
      client_secret: pw.env.get("CLIENT_SECRET"),
    }),
  })
  const data = JSON.parse(res.body)
  pw.env.set("AUTH_TOKEN", data.access_token)
  pw.env.set("TOKEN_EXPIRY", String(Date.now() + data.expires_in * 1000))
}

Guidelines

• Use collections to organize endpoints by feature or service.
• Environment variables keep secrets out of shared collections.
• Self-host for teams — everyone shares collections and environments.
• CLI enables API testing in CI/CD pipelines.
• Hoppscotch is faster than Postman for quick API testing — no account required on hoppscotch.io.