Keep Reddit posts flowing into Slack

What breaks in Slack

The Slack RSS app posts new entries from a feed into a channel. Teams point it at a subreddit's new posts, or at a Reddit search feed for a product name, a competitor or a recurring support question. Reddit retires every feed on 13 Nov 2026 with no replacement, so the subscription stops posting and the channel quietly loses its Reddit signal.

The swap

Redlisten serves the same feed paths at api.redlisten.com in the Atom layout Reddit used. The RSS app cannot send a header, so the key goes in the address.

1. Create a free account and copy your key from the dashboard.
2. In the channel, run /feed list to see the subscriptions and their numbers, then /feed remove with the number of the Reddit feed.
3. Run /feed subscribe with the new address: the same path on api.redlisten.com, ending in .rss, with ?key= and your key.
4. Repeat for each channel that followed a Reddit feed.

# In the channel, list and remove the old Reddit feed
/feed list
/feed remove 1

# Subscribe the same channel to the new address
/feed subscribe https://api.redlisten.com/search.rss?q=%22yourproduct%22&key=rl_live_YOUR_KEY

Feed addresses in the RSS app are visible to members of the workspace, not to the public. That is a reasonable place for a key, and a separate key for Slack lets you revoke it without touching anything else.

Search feeds for brand and support watches

The most useful Reddit feed in a work Slack is usually a search. /search.rss?q= takes quoted phrases, so %22yourproduct%22 finds the exact name, and subreddit: narrows it to the communities that matter. A comments feed, /r/{sub}/comments.rss, catches mentions inside replies, which is where most product talk on Reddit happens.

If nothing posts after the swap

A 401 or an empty feed means the key is missing or mistyped. Open the address in a browser: a working feed shows XML with entries, a bad key shows an error naming the problem. A 429 means the key has used its requests for the month or is being polled faster than its per minute limit; the dashboard shows which.

The app rejects the address when the URL has unescaped spaces or quotes. Encode a quoted phrase as %22 and a space as +, as in the example above. Nothing arrives for a while on a quiet search is normal: the app posts new entries, and a narrow phrase can go hours between mentions. Open the address in a browser to see the latest matches and confirm the feed is live.

The stream option

On paid plans a keyword stream posts matches to Slack through an incoming webhook, with no feed and no key in the workspace. A stream takes several words at once, an exclude list, a set of communities, and posts or comments or both, so one stream replaces a handful of search feeds and cuts the noise a broad feed lets through. Matches are pushed as they are collected, and a stream spends no requests while it waits.

Create an incoming webhook for the channel in Slack, add it as the stream's Slack destination in the dashboard, and set the words to watch. The monitoring guide shows how teams set these up for brand and support watches.

What it costs

Every time the RSS app checks a feed it makes one request, and each entry in the feed counts as one result. A free key has 250 requests a month, which fits one feed checked every three hours, enough to test the switch. A Pro key at $29 a month has 50,000 requests and covers about fifty feeds checked hourly. Plans are listed on the pricing page, dated 6 Nov 2026, and there are no daily caps.

Every feed path is on the RSS switch page.