# Crypto Fear & Greed Index Tracker (Historical + Trend) (`gochujang/fear-greed-tracker`) Actor

Tracks the Alternative.me Crypto Fear & Greed Index: historical time-series, regime detection (extreme fear/greed), 7d/30d rolling averages, streak counting, BTC price correlation, and Telegram alerts on extreme readings. No API key required.

- **URL**: https://apify.com/gochujang/fear-greed-tracker.md
- **Developed by:** [Hojun Lee](https://apify.com/gochujang) (community)
- **Categories:** Developer tools, Automation, News
- **Stats:** 3 total users, 2 monthly users, 96.6% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

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

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
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.
Actors are written with capital "A".

## 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.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Crypto Fear & Greed Index Tracker

Track the [Alternative.me Crypto Fear & Greed Index](https://alternative.me/crypto/fear-and-greed-index/) with historical time-series, regime analysis, trend detection, and Telegram alerts — no API key required.

***

### ⚡ Run in 30 seconds

Click **Start** with default settings — you get today's Fear & Greed value (0–100), classification (Extreme Fear to Extreme Greed), current streak, 7d/30d rolling averages, and trend direction, plus 30 days of historical data. No API key needed.

***

### What You Get

Each data row includes:

- **Date & timestamp** — ISO 8601
- **Value** (0–100) and **Classification** (Extreme Fear / Fear / Neutral / Greed / Extreme Greed)
- **Regime label** — `extreme_fear`, `fear`, `neutral`, `greed`, `extreme_greed`
- **BTC price (USD)** — optional, correlates index with BTC spot price via CoinGecko

Plus a **SUMMARY** key in the key-value store with:

- Current value and regime
- **Streak count** — how many consecutive days in the current regime
- **7d / 30d rolling averages**
- **Trend** — `improving`, `deteriorating`, or `stable` vs 7 days ago
- **Regime breakdown** — count of days in each regime over the lookback period

### Use Cases

- **Entry timing** — Extreme Fear readings (< 25) historically correlate with BTC bottoms
- **Exit signals** — Extreme Greed (> 75) often precedes corrections
- **Strategy backtesting** — Historical F\&G data going back to 2018
- **Regime-aware trading bots** — Adjust position sizing based on current sentiment
- **Telegram alerts** — Get notified when F\&G crosses your threshold

### Sample Output

```json
{
  "date": "2025-09-10",
  "timestamp": "2025-09-10T00:00:00+00:00",
  "value": 22,
  "regime": "extreme_fear",
  "classification": "Extreme Fear",
  "btc_price_usd": 54320.50
}
```

**SUMMARY (key-value store):**

```json
{
  "current_value": 22,
  "current_regime": "extreme_fear",
  "streak_days": 4,
  "trend_7d": "deteriorating",
  "avg_7d": 28.4,
  "avg_30d": 41.2,
  "regime_breakdown": {
    "extreme_fear": 6,
    "fear": 12,
    "neutral": 8,
    "greed": 3,
    "extreme_greed": 1
  }
}
```

### Input Parameters

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `lookbackDays` | Integer | 30 | Days of history to fetch (1–365) |
| `includeBtcCorrelation` | Boolean | true | Fetch BTC/USD price alongside index |
| `alertThreshold` | Object | `{}` | Telegram alert trigger: `{"below": 20}` or `{"above": 80}` |
| `telegramBotToken` | String | — | Bot token for alerts |
| `telegramChatId` | String | — | Chat ID for alerts |

### Pricing

**Pay-Per-Event: $0.0005 per day returned**

- 30 days → **$0.015**
- 90 days → **$0.045**
- 365 days → **$0.18**

### No API Key Required

Data comes from [alternative.me](https://alternative.me/crypto/fear-and-greed-index/) — a free, public API with no authentication needed.

### Technical Details

- **Runtime**: Python 3.12 on Apify
- **Data source**: Alternative.me Fear & Greed API + CoinGecko (BTC price)
- **Rate limiting**: None — single API call per run
- **Typical run time**: < 5 seconds

# Actor input Schema

## `lookbackDays` (type: `integer`):

Number of historical days to fetch (1-365).

## `includeBtcCorrelation` (type: `boolean`):

Fetch BTC/USD daily price to correlate with F\&G index.

## `alertThreshold` (type: `object`):

Trigger Telegram alert when F\&G crosses threshold. E.g. {"below": 20} for extreme fear, {"above": 80} for extreme greed.

## `telegramBotToken` (type: `string`):

Bot token for Telegram alerts (requires alertThreshold).

## `telegramChatId` (type: `string`):

Chat ID for Telegram alerts.

## Actor input object example

```json
{
  "lookbackDays": 30,
  "includeBtcCorrelation": true,
  "alertThreshold": {}
}
```

# 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/fear-greed-tracker").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/fear-greed-tracker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).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/fear-greed-tracker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=gochujang/fear-greed-tracker",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/KCFjzVS0ldLck5FDF/builds/d4Lvqk8Y7EbBSt6hs/openapi.json