Threadr

A Model Context Protocol (MCP) server that gives AI agents full access to Reddit search, browse, read, post, comment, vote, edit, and delete. Works with Claude Code, Claude Desktop, VS Code, Cursor, and any MCP-compatible client.

License: MIT

Quick Start

No Reddit API keys required. Anonymous access works out of the box with basic rate limits.

Claude Code

claude mcp add threadr-mcp -- npx -y threadr-mcp

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "threadr-mcp": {
      "command": "npx",
      "args": ["-y", "threadr-mcp"]
    }
  }
}

VS Code / Cursor

Add to your MCP settings:

{
  "threadr-mcp": {
    "command": "npx",
    "args": ["-y", "threadr-mcp"]
  }
}

Authentication

Threadr supports three tiers of access. Higher tiers unlock more features and higher rate limits.

Tier 1: Anonymous (default)

No configuration needed. All read tools work immediately. Rate limited to ~10 requests/minute.

Tier 2: App-Only

Higher rate limits (~60 req/min), access to NSFW content. Read-only.

1. Go to reddit.com/prefs/apps
2. Create a new app (select script type)
3. Note the client ID (under the app name) and client secret

{
  "mcpServers": {
    "threadr-mcp": {
      "command": "npx",
      "args": ["-y", "threadr-mcp"],
      "env": {
        "REDDIT_CLIENT_ID": "your_client_id",
        "REDDIT_CLIENT_SECRET": "your_client_secret"
      }
    }
  }
}

Tier 3: User Auth

Full access including write operations (post, comment, vote, edit, delete).

{
  "mcpServers": {
    "threadr-mcp": {
      "command": "npx",
      "args": ["-y", "threadr-mcp"],
      "env": {
        "REDDIT_CLIENT_ID": "your_client_id",
        "REDDIT_CLIENT_SECRET": "your_client_secret",
        "REDDIT_USERNAME": "your_username",
        "REDDIT_PASSWORD": "your_password"
      }
    }
  }
}

Environment Variables

Variable	Required	Tier	Description
REDDIT_CLIENT_ID	Tier 2+	2, 3	Reddit app client ID
REDDIT_CLIENT_SECRET	Tier 2+	2, 3	Reddit app client secret
REDDIT_USERNAME	Tier 3	3	Reddit account username
REDDIT_PASSWORD	Tier 3	3	Reddit account password

Tools

Read Tools (all tiers)

Tool	Description	Key Parameters
search_posts	Full-text search across Reddit or within a subreddit	query, subreddit?, sort, time_filter, limit, after
get_subreddit_info	Subreddit metadata: subscribers, rules, description, flair	subreddit
get_subreddit_posts	Posts from a subreddit with sort options	subreddit, sort (hot/new/top/rising/controversial), limit, after
get_post_detail	Full post with comment tree, configurable depth	post_id, comment_limit, comment_depth, comment_sort
get_user_profile	User profile: karma, account age, badges	username
get_user_posts	User's submission history	username, sort, time_filter, limit, after
get_user_comments	User's comment history	username, sort, time_filter, limit, after
get_trending_subreddits	Currently popular subreddits	limit
get_comment_thread	Single comment with parent chain and replies	comment_id, depth, context
get_my_profile	Authenticated user's own profile (Tier 3)	—

Write Tools (Tier 3 only)

Tool	Description	Key Parameters
create_post	Create a text or link post	subreddit, title, content, is_self?, flair_id?, nsfw?, spoiler?
reply_to_post	Add a top-level comment to a post	post_id, content
reply_to_comment	Reply to a comment	comment_id, content
vote	Upvote, downvote, or unvote	target_id, direction (up/down/unvote)
edit_post	Edit your own post	post_id, content
edit_comment	Edit your own comment	comment_id, content
delete_post	Delete your own post	post_id
delete_comment	Delete your own comment	comment_id

Pagination

Listing tools support cursor-based pagination. Responses include next_cursor when more results are available. Pass it as the after parameter to get the next page.

Rate Limiting

Threadr includes a built-in rate limiter that respects Reddit's API limits:

• Tier 1 (anonymous): 10 requests/minute
• Tier 2/3 (authenticated): 60 requests/minute

Requests are queued when the limit is reached, not rejected.

Development

git clone https://github.com/msaeedsakib/threadr-mcp.git
cd threadr-mcp
bun install
bun run build
bun test

License

MIT