Reddit monitoring after the public API closes

You get a Claude Code command for the Reddit Actors in this catalogue and a daily Reddit mentions to Slack workflow, so keyword monitoring keeps working without Reddit's RSS feeds or the public Data API. Reddit ends RSS support on November 13, 2026 and the remaining public API in March 2027, according to its own announcements.

Checked 2026-11-12

Do it now

The config for every Reddit Actor in the catalogue (6 in this bundle), for each client. Claude Code is first.

Claude Code configterminal or .mcp.json

claude mcp add --transport http apify-reddit "https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter"

Run the command in your project folder. Add --scope user to make it available in every project.
Start Claude Code, type /mcp, pick the server and sign in to Apify in the browser window.
No browser sign-in? Add --header "Authorization: Bearer YOUR_APIFY_TOKEN" to the command instead.

Sign-in: OAuth sign-in on first use, or a token header.

Claude Desktop configclaude_desktop_config.json

{
  "mcpServers": {
    "apify-reddit": {
      "command": "npx",
      "args": [
        "-y",
        "@apify/actors-mcp-server",
        "--tools",
        "fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter"
      ],
      "env": {
        "APIFY_TOKEN": "YOUR_APIFY_TOKEN"
      }
    }
  }
}

Easiest: open Customize, then Connectors, choose Add custom connector, paste the server URL (the ChatGPT tab shows it on its own) and sign in to Apify.
Local alternative (needs Node.js): merge this into claude_desktop_config.json (Settings, Developer, Edit config) and replace YOUR_APIFY_TOKEN.
Restart Claude Desktop and enable the server from the tools menu in a chat.

Sign-in: Connector with OAuth, or a token in the local config.

Cursor config~/.cursor/mcp.json

{
  "mcpServers": {
    "apify-reddit": {
      "url": "https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter",
      "headers": {
        "Authorization": "Bearer ${env:APIFY_TOKEN}"
      }
    }
  }
}

Save as ~/.cursor/mcp.json for every project, or .cursor/mcp.json for one project. Merge with servers you already have.
Set APIFY_TOKEN in the environment Cursor starts from, or replace ${env:APIFY_TOKEN} with your token.
Open Cursor Settings, then MCP, and check that the server lists its tools.

Sign-in: Token read from the APIFY_TOKEN environment variable.

VS Code config.vscode/mcp.json

{
  "inputs": [
    {
      "type": "promptString",
      "id": "apify-token",
      "description": "Apify API token",
      "password": true
    }
  ],
  "servers": {
    "apify-reddit": {
      "type": "http",
      "url": "https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter",
      "headers": {
        "Authorization": "Bearer ${input:apify-token}"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace.
Start the server from the file or the MCP servers view. VS Code asks for the token once and stores it securely.
Use the tools from Copilot Chat in agent mode.

Sign-in: Token prompted once and stored by VS Code.

ChatGPT configPlugins > Add custom MCP server

https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter

In ChatGPT on the web, open Plugins, select + and choose Add custom MCP server.
Name it, paste the URL under Connection as the Server URL and choose OAuth for authentication.
Accept the risk warning (I understand and want to continue), select Create as a plugin, then install the plugin from your plugins, sign in to Apify and use it in a new chat.

Sign-in: OAuth sign-in with your Apify account.

Codex CLI config~/.codex/config.toml

[mcp_servers.apify-reddit]
url = "https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter"
bearer_token_env_var = "APIFY_TOKEN"

Add the block to ~/.codex/config.toml, or .codex/config.toml in a project.
Export APIFY_TOKEN in the shell that starts Codex. Or skip the token line and run codex mcp login to sign in.
Start codex and type /mcp to check that the tools are listed.

Sign-in: Token read from the APIFY_TOKEN environment variable.

Gemini CLI configterminal (writes ~/.gemini/settings.json)

gemini mcp add -t http -s user -H "Authorization: Bearer $APIFY_TOKEN" apify-reddit "https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter"

Export APIFY_TOKEN first: the shell expands it and Gemini CLI saves the header, token included, in plain text in ~/.gemini/settings.json (keep that file private). In PowerShell write $env:APIFY_TOKEN instead of $APIFY_TOKEN. Drop -s user to save it in the project's .gemini/settings.json.
Start gemini and type /mcp to check that the server is connected and lists its tools.
Saved by hand, a remote server uses the httpUrl key for streamable HTTP (url means the older SSE transport).

Sign-in: Token header saved by gemini mcp add.

n8n AI Agent configMCP Client Tool node

https://mcp.apify.com/?tools=fetch-actor-details,nimbryxo-studio/reddit-keyword-search-with-advanced-filters,vexaloom-labs/reddit-subreddit-post-and-comment-harvester,vexaloom-labs/reddit-comment-thread-scraper-with-score,nimbryxo-studio/reddit-multi-mode-scraper-for-posts-comments,dataspryva/reddit-user-profile-and-post-history-crawler-pro,dataspryva/reddit-subreddit-profile-rules-and-post-filter

Add an AI Agent node, then attach an MCP Client Tool node to its tool input.
Paste the URL as the endpoint and choose HTTP Streamable as the transport.
Choose Bearer auth and create a credential that holds your Apify token.

Sign-in: Bearer auth credential.

Validated, not executed: 7 of 7 checks pass

Uses Apify's hosted MCP endpoint over HTTPS
The tools parameter lists exactly the chosen Actors as owner/name
JSON configs parse and use the client's top-level key and the same URL
Codex TOML has a [mcp_servers.<name>] table with url and bearer_token_env_var
CLI commands quote the same URL and use the streamable HTTP transport
One-click install links decode back to the same URL and carry no token
Only placeholders, no real token

Pick which Reddit Actors go in the bundle

Reddit is moving data apps to its Developer Platform, where moderators can run Devvit apps such as Discord Relay inside the communities they run. If you are not a moderator of the communities you watch, a hosted Actor that reads public Reddit pages is the practical path for brand, product or topic mentions.

What you need

The keywords you monitor, such as your product name and its common misspellings.
An Apify account and token for the Actor, stored in an n8n Header Auth credential for the Slack workflow.
A Slack channel for the alerts, or Claude Code for ad-hoc research with the MCP command.
If you moderate the community: Reddit's Developer Platform and its Devvit apps as the official route.

Where it breaks

Keyword searches catch mentions in titles and post text; set the comments option in the request body if you also need comment mentions, which makes runs longer. Very generic keywords flood the channel, so add a second word or a subredditFilter in the body before you activate the schedule.

Method

Import the Reddit mentions to Slack workflow and add the Header Auth credential on Run Apify Actor with Bearer followed by your Apify token.
Put your keywords in the keywords list of the JSON body, keep sort on new and the window on the last week, and turn on comment search only if you need it.
Connect Send to Slack, run it by hand once, then activate it; Only records not sent before posts each thread once, keyed on its URL.
For research in chat, run the claude mcp add command from the Do it now block and ask Claude for recent threads that mention your keyword with their scores.

Ready-made recipe

Reddit mentions to Slack: an n8n workflow you can import, using Reddit Keyword Search with Advanced Filters.

Troubleshooting

Why does the client say Unauthorized or invalid token?

Every Apify Actor tool needs a signed-in Apify account. Reconnect the server so the OAuth sign-in runs again, or switch to the token variant: an Authorization: Bearer header with an API token from Apify Console, Settings, API and integrations. For a local server the token must be in the server's own env block, not only in your shell.

Source: Apify MCP server README

Why did my agent's tool list change after an update?

Without a tools parameter Apify's server loads its default tool set, which changes between releases. The URLs on this site pin the tools with ?tools=, so the agent always gets the same Actor tool plus fetch-actor-details. Apify's README gives the same advice for production.

Source: Apify MCP server README

What happens when the agent sends input the Actor rejects?

The server answers with the Actor's input schema, so the agent can fix the arguments and call again. The fetch-actor-details tool in every scoped URL lets it read that schema before the first call.

Source: Apify MCP server README

Claude Code shows Needs authentication. Why?

The server is added but not signed in. Type /mcp in an interactive session and authenticate, or run claude mcp login with the server name. Headless runs with claude -p cannot complete OAuth, so sign in once interactively or use the --header token variant.

Source: Claude Code MCP documentation

Claude Code warns that a tool result is too large. What can I change?

Claude Code warns above 10,000 tokens of tool output and caps it at 25,000 by default (MAX_MCP_OUTPUT_TOKENS raises it). Ask the agent for fewer results per call, for example a lower result limit for the Actor.

Source: Claude Code MCP documentation

Every fix in one place

Questions

When does Reddit RSS stop working?

Reddit's moderator announcement gives November 13, 2026 for the end of RSS support. The remaining public Data API follows in March 2027.

What is the official replacement?

Reddit's Developer Platform. Moderators can install Devvit apps such as Discord Relay in their own communities.

Does the Actor need a Reddit account?

No. It reads public Reddit pages, so there is no login or app approval to manage.

Will the same thread be posted twice?

No. The workflow remembers each thread URL it has posted and skips it on later runs.

Sources

Reddit moderator announcement, checked 2026-11-09
Reddit developer migration, checked 2026-11-09