Subreddit subscriber growth, discussion volume time series and live hot posts from one REST endpoint. No OAuth app registration, no rate-limit juggling.
# one POST, every source POST https://api.trendsapi.ai/api Authorization: Bearer YOUR_API_KEY { "mode": "get_growth", "source": "reddit", "keyword": "wallstreetbets", "percent_growth": ["3M", "12M"] }
{
"search_term": "wallstreetbets",
"data_source": "reddit",
"results": [
{
"period": "3M",
"growth": 4.1,
"direction": "increase"
},
{
"period": "12M",
"growth": 17.8,
"direction": "increase"
}
]
}Reddit is where niche demand shows up first: people describe problems in their own words months before those phrases become search keywords. Tracking discussion volume over time turns that into a measurable signal instead of anecdote.
Since Reddit's API pricing changes, programmatic access means OAuth apps, rate limits and terms-of-service review. Trends API handles collection and normalization; you query a subreddit or topic and get back a 0-100 series you can compare against search and social sources.
Track ticker and sector discussion volume as an alternative-data signal.
Measure mention growth after launches or PR events.
Find the subreddits growing fastest in your niche.
Mine rising pain points before they show up in search volume.
| Reddit API | Trends API | |
|---|---|---|
| Auth | OAuth app registration | one API key |
| Rate limits | 100 req/min, enforced | plan-based, predictable |
| Historical growth | not exposed | weekly + daily series |
| Normalized cross-platform score | no | yes, 0-100 vs 14 other sources |
| Free tier | yes, with limits | 100 requests/month |
Historical trend series for a keyword on this source, normalized 0-100.
Growth percentages over 3M / 6M / 12M / 5Y windows.
21 live trending feeds across platforms, no keyword needed.
Subreddit subscriber counts and discussion volume as normalized time series, growth percentages over 3M/6M/12M/5Y, plus live Reddit Hot Posts and r/worldnews feeds.
No OAuth, no client ID, no redirect URIs. Your Trends API key is the only credential.
Yes. Pass the ticker or company name as the keyword to get discussion volume over time, a common alternative-data input for equity research.
Each series is rescaled against its own history: 100 is the peak of the requested window. That makes Reddit discussion volume directly comparable to Google search interest or TikTok hashtag volume.
Continuously through the day. Every response includes a timestamp so you know exactly how fresh it is.
100 requests a month free. No credit card, no sales call. One key works for every source.
Get a free API key