Reddit in Trends MCP measures subscriber change for named communities, not post text volume. Assistants must pass the subreddit name without the r/ prefix so get_trends and get_growth return the right pipeline and avoid silent mismatches.
Assistants that pass free-form topics instead of subreddit names confuse readers. The contract from Data Sources is explicit: source: "reddit" plus a subreddit identifier without r/.
Investors and community managers watch whether a niche is attracting members faster than adjacent boards. Brand teams watch whether criticism or fandom subs are swelling after a launch. Trends MCP keeps that signal in JSON so summaries stay tied to the returned dates.
For post-level context, teams still read threads manually or use Reddit discussion data positioning pages. Subscriber curves answer "is the room getting bigger" before diving into comment sentiment.
Reddit trends, Social listening AI. Hub: MCP trend tools for assistants.
Tools for this workflow
get_trendsPlot how a community grew across quarters before entering a niche.
get_trends(keyword='investing', source='reddit', data_mode='weekly')
get_growthMeasure 30D and 3M subscriber acceleration for community health reports.
get_growth(keyword='investing', source='reddit', percent_growth=['30D', '3M', '12M'])
get_ranked_trendsRank communities or discussion topics by growth to surface Reddit momentum before mainstream coverage.
get_ranked_trends(source='reddit', sort='yoy_pct_change', limit=30)
get_top_trendsShow hottest front-page posts or world news posts right now.
get_top_trends(type='Reddit Hot Posts', limit=20)
FAQ