Automate Lemmy with AI Agents

Post to Lemmy communities, share links across the fediverse, and cross-post to multiple communities — all from the command line or through your AI agent.

Setup Guide ClawHub

Please make sure there is always a human in the loop.

Post to Lemmy in Seconds

Terminal

# Install globally
npm install -g postiz

# Set your API key
export POSTIZ_API_KEY=your_api_key

# Find your Lemmy integration
postiz integrations:list

# Post to a Lemmy community
postiz posts:create \
  -c "Check out this interesting article about open source!" \
  -s "2025-01-15T10:00:00Z" \
  --settings '{"subreddit":[{"value":{"subreddit":"technology","id":"comm-id","title":"Check this out"}}]}' \
  -i "your-lemmy-integration-id"

Lemmy-Specific Features

🏘️

Community Posting

Post directly to any Lemmy community. Target specific communities by name and ID for precise content distribution.

🔗

Link Posts

Share URLs alongside your post content. Perfect for sharing articles, resources, and external content with your communities.

🌐

Federated Network

Reach users across the entire fediverse. Your posts on one Lemmy instance are visible to federated instances automatically.

🔀

Cross-Community Posting

Post to multiple Lemmy communities in a single request. Share content across related communities to maximize reach.

📝

Custom Titles

Set unique titles for each community post. Tailor your headlines to match the culture and expectations of each community.

📅

Scheduled Posting

Schedule posts with precise timestamps. Plan your community engagement ahead of time and post at peak activity hours.

How It Works

Find Your Lemmy Integration

List your connected accounts and grab your Lemmy integration ID. You can also fetch available settings to see what options are supported.

Discovery

# List all integrations
postiz integrations:list

# Filter for Lemmy
postiz integrations:list | jq \
  '.[] | select(.identifier=="lemmy")'

# Get Lemmy settings schema
postiz integrations:settings <lemmy-id>

Choose Your Communities

Identify the Lemmy communities you want to post to. Each community requires a name, ID, and a post title. You can optionally include a URL for link posts.

Configuration

# Example community configuration
# subreddit = community name
# id = community ID from your instance
# title = post title (required, min 2 chars)
# url = optional link URL

echo '{
  "subreddit": [
    {
      "value": {
        "subreddit": "technology",
        "id": "comm-123",
        "title": "Great article on AI",
        "url": "https://example.com/article"
      }
    }
  ]
}'

Create Your Post

Schedule a Lemmy post with your content, target communities, and optional link URL. Posts can target one or multiple communities at once.

Post Creation

postiz posts:create \
  -c "Thoughts on the future of open source" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "subreddit": [
      {
        "value": {
          "subreddit": "technology",
          "id": "comm-123",
          "title": "The Future of Open Source",
          "url": "https://example.com/article"
        }
      }
    ]
  }' \
  -i "lemmy-id"

Lemmy Settings Reference

Every Lemmy post accepts these platform-specific settings via the --settings flag.

Field	Type	Required	Description
`__type`	string	Yes	Must be "lemmy"
`subreddit`	array	Yes	Array of community objects: [{value: {subreddit, id, title, url?}}]
`subreddit[].value.subreddit`	string	Yes	Community name (min 2 characters)
`subreddit[].value.id`	string	Yes	Community ID on the Lemmy instance
`subreddit[].value.title`	string	Yes	Post title (min 2 characters)
`subreddit[].value.url`	string	No	Optional URL for link posts

Common Configurations

Copy-paste these settings for common Lemmy posting scenarios.

Simple Text Post to One Community

settings.json

{
  "subreddit": [
    {
      "value": {
        "subreddit": "technology",
        "id": "comm-123",
        "title": "Interesting discussion on AI agents"
      }
    }
  ]
}

Link Post with URL

settings.json

{
  "subreddit": [
    {
      "value": {
        "subreddit": "opensource",
        "id": "comm-456",
        "title": "New open-source social media tool",
        "url": "https://github.com/gitroomhq/postiz-app"
      }
    }
  ]
}

Cross-Post to Multiple Communities

settings.json

{
  "subreddit": [
    {
      "value": {
        "subreddit": "technology",
        "id": "comm-123",
        "title": "AI-powered social media automation"
      }
    },
    {
      "value": {
        "subreddit": "selfhosted",
        "id": "comm-789",
        "title": "Self-host your social media scheduler"
      }
    },
    {
      "value": {
        "subreddit": "opensource",
        "id": "comm-456",
        "title": "Open-source alternative to Buffer"
      }
    }
  ]
}

What is OpenClaw?

OpenClaw is the open-source personal AI agent with 145k+ GitHub stars. It runs locally on your machine, connects through apps you already use, and takes real actions on your behalf.

💬

Works Where You Are

Message OpenClaw from WhatsApp, Telegram, Slack, Discord, Signal, iMessage, or 10+ other platforms. No new app to learn.

🧩

Skill-Based Architecture

OpenClaw extends its abilities through Skills — lightweight plugins defined in Markdown files. Postiz is available as a skill on ClawHub.

⏰

Proactive Automation

Schedule recurring tasks with cron jobs. OpenClaw can post your Lemmy content on a schedule without you having to ask each time.

How Postiz Becomes an OpenClaw Skill

When you install Postiz Agent globally, OpenClaw automatically discovers it by reading the bundled SKILL.md file. This file tells OpenClaw what commands are available, what environment variables are needed, and how to compose Lemmy posts with the right settings.

✓Install from ClawHub with one command: clawhub install nevo-david/postiz
✓OpenClaw reads the SKILL.md and learns all Postiz commands
✓Eligibility is checked automatically — POSTIZ_API_KEY must be set
✓Skills are loaded on-demand, keeping the agent context clean
✓Works with any LLM backend: Claude, GPT, Gemini, Llama, and more

Install from ClawHub

# Install the Postiz skill
clawhub install nevo-david/postiz

# Or install the CLI globally
npm install -g postiz

# Set your API key
export POSTIZ_API_KEY=your_api_key

# Verify OpenClaw sees it
openclaw skills list --eligible

# Output:
# - postiz: Social media automation
#   CLI for scheduling posts
#   across 30+ platforms

Lemmy Posting with OpenClaw

Message OpenClaw from any platform — it reads the Postiz skill, discovers your Lemmy integration, and handles the entire posting workflow autonomously.

🦀

From Any Chat App

WhatsApp, Telegram, Slack, Discord...

Send a message to OpenClaw from your favorite chat app. It runs as a persistent daemon on your machine, so it picks up your message, discovers your Lemmy account via Postiz, composes the post, and publishes it to your chosen communities.

WhatsApp / Telegram

You: Post to the technology and
  opensource communities on Lemmy about
  our new release, link to the blog post

OpenClaw: Got it! Here's what I'll do:
  1. Find your Lemmy integration
  2. Post to technology & opensource
  3. Include link to blog post
  4. Schedule for now

  Done! Your Lemmy posts are live.
  Post ID: abc-123

🦀

Scheduled & Proactive

Cron jobs for recurring content

OpenClaw supports cron-based heartbeat tasks. Set up a recurring job that checks for new content and cross-posts it to your Lemmy communities automatically — no manual trigger needed.

openclaw.json (heartbeat)

{
  "heartbeat": [
    {
      "cron": "0 9 * * 1-5",
      "prompt": "Check ~/content/pending
  for new blog posts. For each one,
  create a Lemmy post in the technology
  and opensource communities with the
  article title and link. Move posted
  files to ~/content/posted."
    }
  ]
}

Why OpenClaw + Postiz for Lemmy

OpenClaw's skill system makes Postiz a natural fit. The agent reads the SKILL.md to understand every available command, then autonomously chains them together for Lemmy workflows.

✓Message from WhatsApp to post to Lemmy — no terminal needed
✓Cron jobs for hands-free daily community engagement
✓Structured JSON output lets OpenClaw verify each step succeeded
✓Cross-post to multiple communities in a single conversation
✓Share links and articles across the fediverse effortlessly
✓Model-agnostic — works with Claude, GPT, Gemini, or open-source LLMs

SKILL.md (auto-discovered)

---
name: postiz
description: Social media automation
  CLI for scheduling posts across
  30+ platforms including Lemmy
metadata:
  openclaw:
    requirements:
      env:
        - POSTIZ_API_KEY
      binaries:
        - postiz
---

# Available Commands
- postiz integrations:list
- postiz integrations:settings <id>
- postiz posts:create
- postiz upload <file>
- postiz analytics:platform <id>

# Lemmy Settings
subreddit (array of communities),
each with: subreddit, id, title, url

Also Works with Claude Code

Postiz Agent works as a CLI tool with any AI agent that can execute shell commands — including Anthropic's Claude Code.

Claude Code

by Anthropic

Claude reads the SKILL.md file to learn all available Postiz commands, then autonomously discovers your Lemmy integration, composes your post with the right community settings, and schedules it.

Claude Code

> Post an article about our new release
  to the technology and opensource
  communities on Lemmy

Claude will automatically run:
  postiz integrations:list
  postiz posts:create \
    -c "We just launched v2.0!" \
    -s "2025-03-02T09:00:00Z" \
    --settings '{"subreddit":[
      {"value":{"subreddit":"technology",
        "id":"comm-123",
        "title":"New Release v2.0",
        "url":"https://blog.example.com"}},
      {"value":{"subreddit":"opensource",
        "id":"comm-456",
        "title":"Open Source Release v2.0",
        "url":"https://blog.example.com"}}
    ]}' \
    -i "lemmy-id"

Lemmy + Other Platforms

Schedule the same content to Lemmy and other platforms in a single command. Each platform gets its own settings.

Terminal

# Post to Lemmy and Reddit simultaneously
postiz posts:create \
  -c "Check out our new open-source project! #opensource" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "subreddit": [
      {
        "value": {
          "subreddit": "technology",
          "id": "comm-123",
          "title": "New open-source social media tool"
        }
      }
    ]
  }' \
  -i "lemmy-id,reddit-id"

# Batch schedule a week of Lemmy content
for day in 1 2 3 4 5; do
  postiz posts:create \
    -c "Day $day community highlight! #fediverse" \
    -s "2025-03-0${day}T10:00:00Z" \
    --settings '{"subreddit":[{"value":{"subreddit":"technology","id":"comm-123","title":"Day '"$day"' Highlight"}}]}' \
    -i "lemmy-id"
done