Content Publisher

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name: content-publisher description: Publish content to Medium, Dev.to, and Hashnode from markdown files. Handles formatting, SEO optimization, scheduling, and cross-posting with canonical URLs. Use when asked to publish articles, blog posts, or cross-post content across platforms.

---

Content Publisher

Publish markdown articles to Medium, Dev.to, and Hashnode. Handles SEO, formatting, and canonical URLs for cross-posting.

Supported Platforms

| Platform | Method | Auth | |----------|--------|------| | Medium | Browser automation | Google login | | Dev.to | API | API key in env DEVTO_API_KEY | | Hashnode | API | API key in env HASHNODE_TOKEN |

Workflow

1. Prepare content

Ensure article has:

Title (H1)

Subtitle/description

Tags (3-5 relevant tags)

Content body (markdown)

Optional: cover image URL

2. SEO optimization checklist

Before publishing, verify:

[ ] Title contains target keyword (under 60 chars)

[ ] Meta description (under 155 chars)

[ ] H2/H3 structure with keywords

[ ] Internal/external links

[ ] Alt text on images

[ ] Call-to-action at end

3. Publish to Medium (browser)

1. Navigate to https://medium.com/new-story
2. Paste title and content
3. Click "Publish" → set tags → confirm

4. Publish to Dev.to (API)

curl -X POST https://dev.to/api/articles \
  -H "api-key: $DEVTO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "article": {
      "title": "TITLE",
      "body_markdown": "CONTENT",
      "published": true,
      "tags": ["ai", "productivity"],
      "canonical_url": "MEDIUM_URL"
    }
  }'

5. Publish to Hashnode (GraphQL)

curl -X POST https://gql.hashnode.com \
  -H "Authorization: $HASHNODE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "mutation { publishPost(input: { title: \"TITLE\", contentMarkdown: \"CONTENT\", publicationId: \"PUB_ID\", tags: [{slug: \"ai\"}] }) { post { url } } }"
  }'

Cross-posting strategy

1. First: Publish on Medium (or your primary platform) 2. Wait 24-48h: Let search engines index the original 3. Cross-post: Use canonical_url pointing to the original 4. Why: Avoids duplicate content penalties in SEO

Publication submission (Medium)

To get more reach, submit to Publications: 1. Find publication's "Write for us" page 2. Follow their submission guidelines 3. Submit via Medium's story settings → "Add to publication"

High-traffic AI Publications

Towards AI (AI/ML focused)

Better Programming (dev tools)

The Startup (business/tech)

Geek Culture (tech general)

Level Up Coding (programming)

Batch publishing

For multiple articles, process sequentially with delays:

Medium: max 2 articles per 24 hours

Dev.to: no strict limit, but space them 1+ hours apart

Hashnode: no strict limit