reddit-post-engine

Reddit Post Engine

Draft a Reddit post that fits the subreddit's culture. Optionally post it via Composio.

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Critical rule: Never post without confirming subreddit rules. Never include product links in the body: put them in the first comment only if appropriate. Follow the 90/10 rule: your post should add value independent of any product mention.

Anti-spam rule: Posts that are primarily promotional will be removed and may get the account banned. The goal is to contribute to the community first. Product mentions go in the first comment, and only if the subreddit allows self-promotion.

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Step 1: Setup Check

echo "GEMINI_API_KEY: ${GEMINI_API_KEY:+set}"
# Check if Composio Reddit MCP is connected
claude mcp list 2>/dev/null | grep -i reddit || echo "Composio Reddit MCP: not connected"

If GEMINI_API_KEY is missing: Stop. Tell the user: "GEMINI_API_KEY is required. Get it at aistudio.google.com. Add it to your .env file."

If Composio Reddit MCP is not connected: Continue. The skill will draft posts but skip the posting step. Inform the user: "Composio Reddit MCP not connected: I'll draft your post for manual submission. To enable direct posting, see the setup instructions in README.md."

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Step 2: Gather Context

You need:

• Target subreddit (e.g., r/devops, r/startups, r/SideProject)
• What you are sharing (project, article, question, discussion, tool)
• One-sentence description of what it does
• Why it's relevant to this specific subreddit's community
• Whether you want a self-post (text) or link post

If any of these are missing, ask in one message:

"To draft your Reddit post, I need:

1. Which subreddit? (e.g., r/devops, r/startups)
2. What are you sharing? (project, article, tool, question)
3. What does it do? (one sentence, technical)
4. Why does this subreddit care about it specifically?"

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Step 3: Fetch Subreddit Rules and Culture

Fetch the subreddit's rules:

curl -s \
  -H "User-Agent: varnan-skills/1.0" \
  "https://www.reddit.com/r/{SUBREDDIT}/about/rules.json" \
  | python3 -c "
import sys, json
d = json.load(sys.stdin)
rules = d.get('rules', [])
for r in rules:
    print(f'Rule: {r.get(\"short_name\", \"\")}')
    print(f'Detail: {r.get(\"description\", \"\")[:200]}')
    print()
"