# Reddit Crypto Sentiment Tracker (`gochujang/reddit-crypto-sentiment`) Actor

Analyzes Reddit crypto communities for sentiment, trending tokens, and discussion signals

- **URL**: https://apify.com/gochujang/reddit-crypto-sentiment.md
- **Developed by:** [Hojun Lee](https://apify.com/gochujang) (community)
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 post analyzeds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Reddit Crypto Sentiment Tracker

Monitor the pulse of the crypto community in real time. This Actor scrapes Reddit's top crypto subreddits — r/CryptoCurrency, r/Bitcoin, r/ethereum, r/defi, r/CryptoMarkets, r/altcoin — and delivers structured sentiment data, trending token mentions, and discussion signals you can plug directly into trading systems, dashboards, or research pipelines.

***

### What It Does

For each subreddit, the Actor fetches up to 100 hot posts via Reddit's public JSON API, then enriches every post with:

- **Sentiment classification** — keyword-based scoring across bullish and bearish signals
- **Engagement tier** — viral / high / moderate / low / minimal based on upvotes
- **Token extraction** — 30+ crypto tickers scanned per title (BTC, ETH, SOL, PEPE, …)
- **Post type detection** — news, discussion, meme, technical\_analysis, question
- **Controversy score** — comments-to-score ratio (high = heated debate)
- **Traction velocity** — trending / rising / normal based on score × post age

A per-run aggregate summary (overall sentiment, top tokens, top posts, per-subreddit stats) is saved to a Key-Value Store for quick dashboard integration.

***

### Use Cases

| Use Case | How |
|---|---|
| **Trading signals** | Filter `sentiment_label=very_bullish` + `traction_velocity=trending` for momentum plays |
| **Community monitoring** | Track daily sentiment drift across multiple subreddits |
| **Token discovery** | `mentioned_tokens` reveals which coins are gaining mindshare before price moves |
| **Meme coin radar** | Filter `post_type=meme` + `engagement_tier=viral` in r/CryptoCurrency |
| **Research & analytics** | Feed structured JSON into LLMs or BI tools for deeper analysis |

***

### Input

| Field | Type | Default | Description |
|---|---|---|---|
| `subreddits` | array | `["CryptoCurrency","Bitcoin","ethereum","defi"]` | Subreddit names to scrape |
| `maxPostsPerSubreddit` | integer | `50` | Posts per subreddit (10–100) |
| `timeFilter` | string | `"day"` | Reference period: `hour` / `day` / `week` / `month` |

#### Example Input

```json
{
  "subreddits": ["CryptoCurrency", "Bitcoin", "ethereum", "defi", "CryptoMarkets", "altcoin"],
  "maxPostsPerSubreddit": 100,
  "timeFilter": "day"
}
```

***

### Output

Each post is pushed to the default dataset as one JSON record.

#### Fields

| Field | Type | Description |
|---|---|---|
| `subreddit` | string | Source subreddit |
| `post_id` | string | Reddit post ID |
| `title` | string | Post title |
| `score` | integer | Net upvotes |
| `upvote_ratio` | float | Ratio 0–1 |
| `num_comments` | integer | Comment count |
| `created_utc` | string | ISO8601 timestamp |
| `url` | string | Full post URL |
| `flair` | string|null | Post flair if set |
| `author` | string | Username |
| `sentiment_label` | string | `very_bullish` / `bullish` / `neutral` / `bearish` / `very_bearish` |
| `sentiment_score` | float | -1.0 (very bearish) to +1.0 (very bullish) |
| `engagement_tier` | string | `viral` / `high` / `moderate` / `low` / `minimal` |
| `mentioned_tokens` | array | Crypto tickers found in title |
| `post_type` | string | `news` / `discussion` / `meme` / `technical_analysis` / `question` |
| `controversy_score` | float | comments ÷ score — higher = more debate |
| `traction_velocity` | string | `trending` / `rising` / `normal` |

#### Example Record

```json
{
  "subreddit": "CryptoCurrency",
  "post_id": "1abc123",
  "title": "BTC breaks ATH — biggest bull rally since 2021",
  "score": 4821,
  "upvote_ratio": 0.94,
  "num_comments": 612,
  "created_utc": "2026-09-01T08:42:00Z",
  "url": "https://www.reddit.com/r/CryptoCurrency/comments/1abc123/",
  "flair": "News",
  "author": "crypto_whale99",
  "sentiment_label": "very_bullish",
  "sentiment_score": 0.8,
  "engagement_tier": "viral",
  "mentioned_tokens": ["BTC"],
  "post_type": "news",
  "controversy_score": 0.127,
  "traction_velocity": "trending"
}
```

#### Sentiment Summary (Key-Value Store)

The Key-Value Store `reddit-crypto-sentiment-summary` contains key `SENTIMENT_SUMMARY` with an aggregate object:

```json
{
  "generated_at": "2026-09-01T09:00:00Z",
  "total_posts_analyzed": 300,
  "overall_sentiment": "bullish",
  "sentiment_distribution": {
    "very_bullish": 42,
    "bullish": 89,
    "neutral": 121,
    "bearish": 38,
    "very_bearish": 10
  },
  "top_tokens_mentioned": [
    {"token": "BTC", "mention_count": 88},
    {"token": "ETH", "mention_count": 54}
  ],
  "top_posts": [...],
  "subreddit_stats": {
    "CryptoCurrency": {
      "post_count": 100,
      "avg_score": 341.2,
      "sentiment_distribution": {"bullish": 35, "neutral": 48, ...}
    }
  }
}
```

***

### Pricing

**Pay-Per-Event: $0.001 per post analyzed**

| Run Size | Posts | Cost |
|---|---|---|
| Quick snapshot | 50 posts × 4 subreddits | $0.20 |
| Standard | 100 posts × 6 subreddits | $0.60 |
| Full portfolio | 100 posts × 6 subreddits × 24 runs/day | ~$14.40/day |

No API keys required. Uses Reddit's public JSON API only.

***

### How It Works

1. Fetches `/r/{subreddit}/hot.json` with `limit=100` via the public Reddit API
2. Applies keyword scanning against 30+ bullish and 30+ bearish terms
3. Scans titles for 30+ crypto ticker symbols (BTC, ETH, SOL, PEPE, …)
4. Classifies post type based on flair and title patterns
5. Computes controversy and traction metrics
6. Charges `$0.001` per processed post via Apify PPE
7. Pushes all records to dataset + summary to Key-Value Store

***

### Notes

- Subreddits are scraped concurrently with a 1-second polite delay between each
- Posts are fetched from the `hot` listing; `timeFilter` is provided as metadata context (Reddit's `hot` endpoint doesn't filter by time)
- No Reddit account or API key needed — uses the public unauthenticated JSON API
- Rate-limit friendly: single `User-Agent` header, no parallel blasting

# Actor input Schema

## `subreddits` (type: `array`):

List of subreddit names to analyze

## `maxPostsPerSubreddit` (type: `integer`):

Maximum posts to analyze per subreddit

## `timeFilter` (type: `string`):

Time period for top posts

## Actor input object example

```json
{
  "subreddits": [
    "CryptoCurrency",
    "Bitcoin",
    "ethereum",
    "defi"
  ],
  "maxPostsPerSubreddit": 50,
  "timeFilter": "day"
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("gochujang/reddit-crypto-sentiment").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("gochujang/reddit-crypto-sentiment").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call gochujang/reddit-crypto-sentiment --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,gochujang/reddit-crypto-sentiment"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/nLaniGweGAhTa6Ohd/builds/QYrstZ1mRBU3xTH2H/openapi.json