modbender/skill-library-mcp

PostProxy API Skill

Call the PostProxy API to manage social media posts across multiple platforms (Facebook, Instagram, TikTok, LinkedIn, YouTube, X/Twitter, Threads).

Setup

API key must be set in environment variable POSTPROXY_API_KEY. Get your API key at: https://app.postproxy.dev/api_keys

Base URL

https://api.postproxy.dev

Authentication

All requests require Bearer token:

-H "Authorization: Bearer $POSTPROXY_API_KEY"

Endpoints

List Profiles

curl -X GET "https://api.postproxy.dev/api/profiles" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY"

List Posts

curl -X GET "https://api.postproxy.dev/api/posts" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY"

Get Post

curl -X GET "https://api.postproxy.dev/api/posts/{id}" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY"

Create Post (JSON with media URLs)

curl -X POST "https://api.postproxy.dev/api/posts" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "post": {
      "body": "Post content here"
    },
    "profiles": ["twitter", "linkedin", "threads"],
    "media": ["https://example.com/image.jpg"]
  }'

Create Post (File Upload)

Use multipart form data to upload local files:

curl -X POST "https://api.postproxy.dev/api/posts" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY" \
  -F "post[body]=Check out this image!" \
  -F "profiles[]=instagram" \
  -F "profiles[]=twitter" \
  -F "media[]=@/path/to/image.jpg" \
  -F "media[]=@/path/to/image2.png"

Create Draft

Add post[draft]=true to create without publishing:

curl -X POST "https://api.postproxy.dev/api/posts" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY" \
  -F "post[body]=Draft post content" \
  -F "profiles[]=twitter" \
  -F "media[]=@/path/to/image.jpg" \
  -F "post[draft]=true"

Publish Draft

curl -X POST "https://api.postproxy.dev/api/posts/{id}/publish" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY"

Profile options: facebook, instagram, tiktok, linkedin, youtube, twitter, threads (or use profile IDs)

Schedule Post

Add scheduled_at to post object:

curl -X POST "https://api.postproxy.dev/api/posts" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "post": {
      "body": "Scheduled post",
      "scheduled_at": "2024-01-16T09:00:00Z"
    },
    "profiles": ["twitter"]
  }'

Delete Post

curl -X DELETE "https://api.postproxy.dev/api/posts/{id}" \
  -H "Authorization: Bearer $POSTPROXY_API_KEY"

Platform-Specific Parameters

For Instagram, TikTok, YouTube, add platforms object:

{
  "platforms": {
    "instagram": { "format": "reel", "first_comment": "Link in bio!" },
    "youtube": { "title": "Video Title", "privacy_status": "public" },
    "tiktok": { "privacy_status": "PUBLIC_TO_EVERYONE" }
  }
}

User Request

$ARGUMENTS