
About
Automate Reddit tasks via Rube MCP (Composio): search subreddits, create posts, manage comments, and browse top content. Always search tools first for current schemas.
name: reddit-automation description: "Automate Reddit tasks via Rube MCP (Composio): search subreddits, create posts, manage comments, and browse top content. Always search tools first for current schemas." risk: critical source: community date_added: "2026-02-27"
Reddit Automation via Rube MCP
Automate Reddit operations through Composio's Reddit toolkit via Rube MCP.
Prerequisites
- Rube MCP must be connected (RUBE_SEARCH_TOOLS available)
- Active Reddit connection via
RUBE_MANAGE_CONNECTIONSwith toolkitreddit - Always call
RUBE_SEARCH_TOOLSfirst to get current tool schemas
Setup
Get Rube MCP: Add https://rube.app/mcp as an MCP server in your client configuration. No API keys needed — just add the endpoint and it works.
- Verify Rube MCP is available by confirming
RUBE_SEARCH_TOOLSresponds - Call
RUBE_MANAGE_CONNECTIONSwith toolkitreddit - If connection is not ACTIVE, follow the returned auth link to complete Reddit OAuth
- Confirm connection status shows ACTIVE before running any workflows
Core Workflows
1. Search Reddit
When to use: User wants to find posts across subreddits
Tool sequence:
REDDIT_SEARCH_ACROSS_SUBREDDITS- Search for posts matching a query [Required]
Key parameters:
query: Search termssubreddit: Limit search to a specific subreddit (optional)sort: Sort results by 'relevance', 'hot', 'top', 'new', 'comments'time_filter: Time range ('hour', 'day', 'week', 'month', 'year', 'all')limit: Number of results to return
Pitfalls:
- Search results may not include very recent posts due to indexing delay
- The
time_filterparameter only works with certain sort options - Results are paginated; use after/before tokens for additional pages
- NSFW content may be filtered based on account settings
2. Create Posts
When to use: User wants to submit a new post to a subreddit
Tool sequence:
REDDIT_LIST_SUBREDDIT_POST_FLAIRS- Get available post flairs [Optional]REDDIT_CREATE_REDDIT_POST- Submit the post [Required]
Key parameters:
subreddit: Target subreddit name (without 'r/' prefix)title: Post titletext: Post body text (for text posts)url: Link URL (for link posts)flair_id: Flair ID from the subreddit's flair list
Pitfalls:
- Some subreddits require flair; use LIST_SUBREDDIT_POST_FLAIRS first
- Subreddit posting rules vary widely; karma/age restrictions may apply
- Text and URL are mutually exclusive; a post is either text or link
- Rate limits apply; avoid rapid successive post creation
- The subreddit name should not include 'r/' prefix
3. Manage Comments
When to use: User wants to comment on posts or manage existing comments
Tool sequence:
REDDIT_RETRIEVE_POST_COMMENTS- Get comments on a post [Optional]REDDIT_POST_REDDIT_COMMENT- Add a comment to a post or reply to a comment [Required]REDDIT_EDIT_REDDIT_COMMENT_OR_POST- Edit an existing comment [Optional]REDDIT_DELETE_REDDIT_COMMENT- Delete a comment [Optional]
Key parameters:
post_id: ID of the post (for retrieving or commenting on)parent_id: Full name of the parent (e.g., 't3_abc123' for post, 't1_xyz789' for comment)body: Comment text contentthing_id: Full name of the item to edit or delete
Pitfalls:
- Reddit uses 'fullname' format: 't1_' prefix for comments, 't3_' for posts
- Editing replaces the entire comment body; include all desired content
- Deleted comments show as '[deleted]' but the tree structure remains
- Comment depth limits may apply in some subreddits
4. Browse Subreddit Content
When to use: User wants to view top or trending content from a subreddit
Tool sequence:
REDDIT_GET_R_TOP- Get top posts from a subreddit [Required]REDDIT_GET- Get posts from a subreddit endpoint [Alternative]REDDIT_RETRIEVE_REDDIT_POST- Get full details for a specific post [Optional]
Key parameters:
subreddit: Subreddit nametime_filter: Time range for top posts ('hour', 'day', 'week', 'month', 'year', 'all')limit: Number of posts to retrievepost_id: Specific post ID for full details
Pitfalls:
- Top posts with time_filter='all' returns all-time top content
- Post details include the body text but comments require a separate call
- Some posts may be removed or hidden based on subreddit rules
- NSFW posts are included unless filtered at the account level
5. Manage Posts
When to use: User wants to edit or delete their own posts
Tool sequence:
REDDIT_EDIT_REDDIT_COMMENT_OR_POST- Edit a post's text content [Optional]REDDIT_DELETE_REDDIT_POST- Delete a post [Optional]REDDIT_GET_USER_FLAIR- Get user's flair in a subreddit [Optional]
Key parameters:
thing_id: Full name of the post (e.g., 't3_abc123')body: New text content (for editing)subreddit: Subreddit name (for flair)
Pitfalls:
- Only text posts can have thei
