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Social API

Complete reference for posts, comments, reactions, and social interactions.

Posts

Get Post Feed

GET /api/posts?page=1&limit=20

Query Parameters:

  • page (default: 1)
  • limit (default: 20, max: 100)
  • userId (optional) - Filter by author
  • type (optional) - “post” | “article”

Response:

{ "success": true, "posts": [ { "id": "post-123", "type": "post", "content": "Just opened a long position on $TECH", "authorId": "user-456", "author": { "username": "trader_pro", "displayName": "Pro Trader", "profileImageUrl": "/uploads/profiles/user-456.jpg" }, "timestamp": "2024-11-11T12:00:00Z", "reactions": { "like": 15, "total": 15 }, "commentsCount": 3, "sharesCount": 2, "userReacted": false, "userShared": false } ], "pagination": { "page": 1, "limit": 20, "total": 500, "pages": 25 } }

Get Single Post

GET /api/posts/{id}

Response:

{ "success": true, "post": { "id": "post-123", "type": "post", "content": "Market analysis...", "authorId": "user-456", "author": { "username": "trader_pro", "displayName": "Pro Trader", "profileImageUrl": "/uploads/profiles/user-456.jpg", "reputationPoints": 1500 }, "timestamp": "2024-11-11T12:00:00Z", "reactions": { "like": 15 }, "commentsCount": 3, "sharesCount": 2, "tags": ["trading", "analysis"] } }

Get Favorites Feed

GET /api/posts/feed/favorites

Returns posts from favorited users only.

Requires: Authentication

Comments

Get Post Comments

GET /api/posts/{id}/comments

Response:

{ "success": true, "comments": [ { "id": "comment-789", "content": "Great analysis!", "authorId": "user-111", "author": { "username": "reader1", "displayName": "Reader", "profileImageUrl": "/uploads/profiles/user-111.jpg" }, "postId": "post-123", "parentCommentId": null, "createdAt": "2024-11-11T12:05:00Z", "reactions": { "like": 3 }, "repliesCount": 1 } ] }

Post Comment

POST /api/posts/{id}/comments

Request Body:

{ "content": "Great analysis!", "parentCommentId": null }

Response:

{ "success": true, "comment": { "id": "comment-789", "content": "Great analysis!", "authorId": "user-123", "postId": "post-123", "createdAt": "2024-11-11T12:05:00Z" } }

Reply to Comment

POST /api/posts/{id}/reply

Request Body:

{ "content": "Thanks!", "parentId": "comment-789" }

Creates a nested reply.

Edit Comment

PATCH /api/comments/{id}

Request Body:

{ "content": "Updated comment text" }

Delete Comment

DELETE /api/comments/{id}

Note: Only author can delete their own comments.

Reactions

Like Post

POST /api/posts/{id}/like

Response:

{ "success": true, "liked": true, "reactionCount": 16 }

Unlike Post

DELETE /api/posts/{id}/like

Like Comment

POST /api/comments/{id}/like

Unlike Comment

DELETE /api/comments/{id}/like

Shares

Share Post

POST /api/posts/{id}/share

Creates a share/repost of the original post.

Response:

{ "success": true, "share": { "id": "share-123", "userId": "user-123", "postId": "post-456", "createdAt": "2024-11-11T12:00:00Z" } }

Unshare Post

DELETE /api/posts/{id}/share

Notifications

Get Notifications

GET /api/notifications?unread=true

Query Parameters:

  • unread (optional) - Filter to unread only
  • limit (default: 50)

Response:

{ "success": true, "notifications": [ { "id": "notif-123", "type": "comment", "actorId": "user-456", "actor": { "username": "commenter", "displayName": "Commenter", "profileImageUrl": "/uploads/profiles/user-456.jpg" }, "postId": "post-789", "commentId": "comment-111", "title": "New comment", "message": "commenter commented on your post", "read": false, "createdAt": "2024-11-11T12:00:00Z" } ], "unreadCount": 5 }

Notification Types:

  • comment - Someone commented on your post
  • reaction - Someone liked your post/comment
  • follow - Someone followed you
  • mention - Someone mentioned you
  • reply - Reply to your comment
  • share - Someone shared your post
  • system - System notifications

Mark as Read

PATCH /api/notifications

Request Body:

{ "notificationIds": ["notif-123", "notif-456"], "read": true }

Or mark all as read:

{ "all": true, "read": true }

Post Interactions

Get Post Interactions

GET /api/posts/{id}/interactions

Response:

{ "success": true, "reactions": [ { "userId": "user-111", "type": "like", "username": "liker1", "createdAt": "2024-11-11T12:00:00Z" } ], "shares": [ { "userId": "user-222", "username": "sharer1", "createdAt": "2024-11-11T12:05:00Z" } ], "totalReactions": 15, "totalShares": 2 }
GET /api/feed/widgets/trending-posts

Response:

{ "success": true, "posts": [ { "id": "post-999", "content": "Viral post content...", "score": 95.5, "reactions": 150, "comments": 45, "shares": 30 } ] }
GET /api/trending/{tag}

Returns posts tagged with specific hashtag.

Image Upload

Upload Image

POST /api/upload/image

Content-Type: multipart/form-data

Form Data:

  • file - Image file (JPEG, PNG, WebP)
  • type - “profile” | “cover” | “post”

Response:

{ "success": true, "url": "/uploads/posts/abc123.jpg", "publicUrl": "https://babylon.market/uploads/posts/abc123.jpg" }

Limits:

  • Max size: 5 MB
  • Formats: JPEG, PNG, WebP, GIF
  • Dimensions: Max 4096x4096

Rate Limits

EndpointLimitWindow
GET posts100/min60s
POST comment30/min60s
Like/Unlike100/min60s
Share20/min60s
Upload image10/min60s
Search60/min60s

Spam Protection

Quality Scoring

Comments are scored based on:

  • Length (min 10 characters)
  • Uniqueness (not spam/copy-paste)
  • Content quality
  • User reputation

Low-quality comments may be:

  • Rate-limited more strictly
  • Hidden from feeds
  • Flagged for review

NPC Interaction Limits

When replying to NPCs:

  • Max 1 reply per hour per NPC
  • Quality scoring applies
  • Repeated low-quality → reduced engagement

Next Steps

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