Crypto Social Sentiment Aggregator

Crypto Social Sentiment Aggregator aggregates Reddit mentions, keyword sentiment scores, Fear & Greed index, and optional LunarCrush metrics for any crypto or stock symbol — no API key required, no proxy needed. Get a normalized -100 to +100 sentiment score, mention count, sentiment momentum, and Fear & Greed regime in a single run.

Social sentiment is one of the few leading indicators in crypto: retail activity on Reddit often precedes price moves by 12–48 hours in both directions. This actor automates that scan across multiple subreddits and symbols simultaneously.

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Why use Crypto Social Sentiment Aggregator?

1. Sentiment as a leading signal — Reddit post volume and sentiment precede price moves in crypto. A surge in bullish mentions for a mid-cap altcoin often precedes a pump within 24–48 hours.
2. Fear & Greed regime context — Extreme Fear readings (below 20) have historically been the best time to buy; Extreme Greed (above 80) precedes corrections. The 7-day moving average shows whether the market is in a recovery or deterioration trend.
3. Multi-symbol monitoring — Track BTC, ETH, SOL, and key altcoins simultaneously. Compare sentiment momentum to identify which assets are gaining or losing community momentum.
4. Contrarian signal detection — Extreme positive sentiment (very_bullish) on a coin that's already up 50% is often a sell signal. Extreme negative sentiment after a crash can be a buy signal. Use sentiment_label for regime classification.
5. Portfolio alerts — Detect when sentiment for a held coin shifts from bullish to bearish before the price confirms the reversal.

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How to use

1. Open the actor on Apify Store and click Try for free.
2. Set symbols to your list of tickers (e.g. ["BTC", "ETH", "SOL"]).
3. Optionally customize redditSubreddits for more targeted community sampling.
4. Enable includeLunarCrush for additional social volume data (may occasionally be unavailable).
5. Click Start. Returns one sentiment record per symbol.

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Input

Field	Type	Default	Description
symbols	string[]	["BTC","ETH","SOL","DOGE"]	Symbols to analyze
redditLimit	integer	25	Posts per subreddit per symbol (5–100)
includeLunarCrush	boolean	true	Fetch LunarCrush Galaxy Score and social volume
redditSubreddits	string[]	["CryptoCurrency","CryptoMarkets","Bitcoin","ethfinance"]	Subreddits to search
maxAgeDays	integer	1	Only count posts from last N days

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Output

{
  "symbol": "ETH",
  "mention_count_24h": 847,
  "sentiment_score": 42,
  "sentiment_label": "bullish",
  "top_positive_posts": ["ETH hitting key support, expecting bounce", "..."],
  "top_negative_posts": ["ETH underperforming BTC again", "..."],
  "fear_greed_value": 61,
  "fear_greed_label": "Greed",
  "fear_greed_7d_avg": 55,
  "reddit_activity_tier": "viral",
  "sentiment_momentum": "improving",
  "lunarcrush_galaxy_score": 72,
  "lunarcrush_alt_rank": 3,
  "lunarcrush_social_volume_24h": 124500,
  "scanned_at": "2026-08-29T14:00:00Z"
}

Output fields

Field	Type	Description
mention_count_24h	integer	Reddit posts mentioning the symbol in the last 24h
sentiment_score	integer	-100 (extreme bear) to +100 (extreme bull)
sentiment_label	string	very_bullish, bullish, neutral, bearish, very_bearish
fear_greed_value	integer	Alternative.me Fear & Greed index (0–100)
fear_greed_label	string	Extreme Fear, Fear, Neutral, Greed, Extreme Greed
fear_greed_7d_avg	float	7-day average Fear & Greed value (momentum signal)
reddit_activity_tier	string	viral (≥200 mentions) / high (≥50) / medium (≥15) / low
sentiment_momentum	string	improving, stable, or deteriorating vs. 7-day average

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Sentiment scoring

Sentiment is computed via keyword matching — fast, predictable, no API cost.

Positive keywords: moon, bullish, pump, ath, breakout, buy, green, gains, rally, bullrun, mooning, surge, soar, boom, opportunity

Negative keywords: crash, dump, bearish, sell, rekt, rug, scam, dead, bear, fear, plunge, collapse, bubble, fraud, down

Each post title is tokenized; +1 per positive word, -1 per negative word, normalized to -100..+100 across all posts for the symbol.

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Cost estimation

Pay-Per-Event: $0.001 per actor start + $0.01 per symbol analyzed.

Use case	Symbols	Estimated cost
4 default symbols	4	~$0.041/run
Top 10 altcoins	10	~$0.101/run
Hourly portfolio check (5 symbols)	5	~$0.051/hour = ~$1.22/day
Daily sentiment sweep	20	~$0.20/day

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FAQ

Is the sentiment score based on machine learning? No — it uses keyword matching for speed and predictability. The list of positive/negative keywords is fixed. This makes results deterministic and fast (no LLM call cost), but it won't catch sarcasm or complex sentiment.

What's LunarCrush and when is it unavailable? LunarCrush is a social intelligence platform with a public API tier. The actor gracefully skips it when the public tier is rate-limited or unavailable — all Reddit and Fear & Greed fields are still returned.

Fear & Greed is listed once — does it apply to all symbols? Yes — Fear & Greed is a market-wide crypto index from Alternative.me, not per-symbol. All symbols in a run share the same fear_greed_value and fear_greed_7d_avg.

Can I use this for stock tickers like AAPL or TSLA? Yes — set redditSubreddits to ["wallstreetbets", "stocks", "investing"] and pass stock tickers. The sentiment scoring works the same way for equities.

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Related actors

• Crypto News Sentiment Analyzer — NLP-based news sentiment from CoinDesk/CoinTelegraph/The Block (complements Reddit sentiment)
• Crypto Whale Flow Monitor — On-chain whale signals (contrast with social sentiment for divergence detection)
• Hyperliquid Whale Tracker — Whale perpetuals positions on Hyperliquid

Feedback

If this actor is useful, a quick review helps other sentiment traders find it: Leave a review on Apify Store

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Keywords: crypto social sentiment, Reddit sentiment analysis, Fear and Greed Index, LunarCrush data scraper, social hype score, crypto FOMO signal, sentiment momentum tracker, social to price lead, bot activity detection, Reddit mention count, influencer signal crypto, sentiment aggregator, stock social sentiment, crypto sentiment monitor