How to Connect Reddit MCP to Claude Desktop

Claude Desktop is Anthropic’s native desktop app for Claude. It supports the Model Context Protocol (MCP), which lets Claude call external tools — including Reddit data from FetchLayer.

Once configured, you can ask Claude to search Reddit, scrape comment threads, analyze subreddit trends, and more — all inside a normal conversation.

Prerequisites

• Claude Desktop installed
• A FetchLayer API key — get one free (no credit card)

Step 1: Open the Claude Desktop config

Claude Desktop reads MCP server configurations from a JSON config file. The location depends on your OS:

macOS:

~/Library/Application Support/Claude/claude_desktop_config.json

Windows:

%APPDATA%\Claude\claude_desktop_config.json

Linux:

~/.config/Claude/claude_desktop_config.json

If the file doesn’t exist, create it. You can also open it from Claude Desktop: go to Settings → Developer → Edit Config.

Step 2: Add the FetchLayer MCP server

Add this configuration to your claude_desktop_config.json:

{
  "mcpServers": {
    "fetchlayer": {
      "url": "https://mcp.fetchlayer.dev",
      "headers": {
        "Authorization": "Bearer sk-your-api-key"
      }
    }
  }
}

Replace sk-your-api-key with your actual API key from the FetchLayer dashboard.

If you already have other MCP servers, add "fetchlayer" next to them:

{
  "mcpServers": {
    "filesystem": { "command": "..." },
    "fetchlayer": {
      "url": "https://mcp.fetchlayer.dev",
      "headers": {
        "Authorization": "Bearer sk-your-api-key"
      }
    }
  }
}

Step 3: Restart Claude Desktop

Quit Claude Desktop completely and reopen it. The app loads MCP configs on startup.

You should see a small hammer/tools icon in the chat input area — this indicates MCP tools are available. Click it to see “fetchlayer” listed with all its Reddit tools.

Step 4: Try it out

Start a new conversation and try:

Search Reddit for posts about “best project management tools” from the last month. Show me the top 5 by score with their subreddits.

Claude will call the FetchLayer search tool and return structured results.

More ideas:

Because Claude can chain tool calls with reasoning, it can do multi-step analysis — search for posts, scrape the comments, and synthesize findings in one conversation turn.

Available Tools

Claude Desktop gets access to all FetchLayer Reddit tools:

• scrape_search — Search posts by keyword
• scrape_post — Get a full post with comments
• scrape_community_posts — Browse subreddit posts
• scrape_community_details — Get subreddit metadata
• scrape_user_profile — User karma, bio, account age
• scrape_user_posts — A user’s post history
• scrape_user_comments — A user’s comment history
• scrape_search_communities — Find subreddits by keyword
• scrape_search_users — Find users by name
• scrape_comment_permalink — Get a specific comment with context
• scrape_popular — Trending posts from r/popular
• scrape_leaderboard — Trending communities
• scrape_explore — Discover communities by topic

Troubleshooting

Tools icon not showing?

• Make sure the config file path is correct for your OS
• Validate the JSON (no trailing commas, proper quoting)
• Fully quit and relaunch Claude Desktop (not just close the window)

Claude says it can’t access Reddit?

• Check that your API key is valid
• Make sure you’re in a new conversation (MCP tools aren’t available in old chats started before config change)

Getting errors in tool calls?

• Look at the tool call details in Claude’s response — it shows the error message
• Most common: invalid API key or malformed request body

What’s Next

• Reddit MCP + Cursor — use Reddit data in your coding agent
• Reddit MCP + Claude Code — terminal-based Claude + Reddit
• How to Scrape Reddit in 2026 — overview of all scraping methods
• FetchLayer API Reference — full endpoint docs