# Mastodon Tech Instances With Open Registration

**Use case:** 

List all tech-category Mastodon instances on joinmastodon.org with open registration — domain, user count, weekly active users, and region.

## Input

```json
{
  "sp_intended_usage": "Fediverse research to identify active tech Mastodon communities for developer outreach",
  "sp_improvement_suggestions": "N/A",
  "sp_contact": "Share your email here...",
  "language": "",
  "category": "tech",
  "region": "",
  "openRegistrationsOnly": true,
  "maxItems": 100
}
```

## Output

```json
{
  "instance_domain": {
    "label": "Instance Domain",
    "format": "string"
  },
  "software_version": {
    "label": "Software Version",
    "format": "string"
  },
  "users_total": {
    "label": "Users Total",
    "format": "number"
  },
  "active_users_week": {
    "label": "Active Users Week",
    "format": "number"
  },
  "open_registrations": {
    "label": "Open Registrations",
    "format": "boolean"
  },
  "region": {
    "label": "Region",
    "format": "string"
  },
  "language": {
    "label": "Language",
    "format": "string"
  },
  "category": {
    "label": "Category",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Mastodon / Fediverse Instance Directory Scraper](https://apify.com/jungle_synthesizer/joinmastodon-instances-social-directory-scraper) with a specific input configuration. Visit the [Actor detail page](https://apify.com/jungle_synthesizer/joinmastodon-instances-social-directory-scraper) to learn more, explore other use cases, and run it yourself.