Fear Greed Index

Crypto Fear & Greed Index reporter. Fetches current market sentiment index and provides simple analysis combined with BTC price movement. Use when users want...

Security Scan

The skill largely does what it says (fetches the Fear & Greed index and BTC price) but it performs a billing call to an external payment API and expects an API key that is not declared in the registry or documented in SKILL.md — an incoherence you should resolve before installing.

Purpose & Capability

Functionality (fetching Alternative.me F&G index and BTC price) matches the name/description. The additional behavior — charging via SkillPay.me — is plausible for a paid skill, but the registry metadata did not declare any required env vars or primary credential even though the code expects SKILLPAY_API_KEY. That mismatch is unexpected.

Instruction Scope

SKILL.md instructs running the included scripts with a --user-id and notes a per-call price, but it does not document that the code will attempt to POST to https://skillpay.me/api/v1 and requires a SKILLPAY_API_KEY (from --api-key or env). The scripts will perform network calls to both Alternative.me and SkillPay.me and will exit if the billing call fails. The instructions omit an operational requirement (the API key) and lack detail about what is sent to the payment endpoint.

Install Mechanism

No install spec; code is provided as simple Python scripts that will be executed. No external installers, downloaded archives, or obscure URLs are used. This is low installation risk.

Credentials

Registry metadata declares no required environment variables, but both scripts read SKILLPAY_API_KEY from the environment (or accept it via CLI). Requiring an API key for billing is reasonable, but it should be explicitly declared as a required credential (primaryEnv) so users know a secret is needed. There are no other unrelated credentials requested.

Persistence & Privilege

The skill does not request persistent or elevated agent privileges; always is false, it does not modify other skill configs, and it only performs outbound HTTP requests. Normal autonomous invocation is allowed but not combined with other high privileges.

What to consider before installing

This skill fetches the Fear & Greed index and BTC price as advertised, but it also charges 0.001 USDT per call via SkillPay.me and expects a SKILLPAY_API_KEY (env or CLI) even though the registry/SKILL.md don't declare that requirement. Before installing: 1) Ask the publisher to declare SKILLPAY_API_KEY (or remove the billing call) and to document exactly what data is sent to SkillPay.me. 2) Verify the reputation and TLS/ownership of https://skillpay.me and the billing API. 3) If you must provide an API key, prefer creating a scoped or revocable key and test the scripts in a sandboxed environment first. 4) If you do not want automatic billing or to share an API key, do not install or run this skill until the billing flow is made explicit and registered in the skill metadata.

Crypto Fear & Greed Index

Overview

Get the current Crypto Fear & Greed Index from Alternative.me, combined with Bitcoin's latest price change, and provides simple market sentiment analysis for traders.

Data source: Alternative.me Crypto Fear & Greed Index API

Commands

Command	Description
index.py	Get latest fear & greed index with market analysis
history.py	Get 30-day historical data

Usage

# Get latest index and analysis
python scripts/index.py --user-id <user-id>

Pricing: 0.001 USDT per call, billed via SkillPay.me.

Output

• Current fear & greed index value (0-100)
• Sentiment classification (Extreme Fear / Fear / Neutral / Greed / Extreme Greed)
• Trend compared to yesterday
• BTC latest price and 24h change
• Simple market sentiment analysis

Index Classification

Value	Sentiment
0-24	Extreme Fear
25-44	Fear
45-55	Neutral
56-75	Greed
76-100	Extreme Greed