# xspy Twitter Smart Follower Check

> xspy Twitter Smart Follower Check is a paid API for AI agents from xspy.pro, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-08).

Determines whether a given Twitter/X username is a 'smart follower' — a high-signal crypto-native account — returning a boolean and a label.

## Facts

- Endpoint: GET https://xspy.pro/api/v1/pro/twitter/%7Busername%7D/is-smart-follower
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-08
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xspy-twitter-smart-follower-check-976891ef
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HT6T4jyjiTBH2nkKWxMy_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability xspy-twitter-smart-follower-check-976891ef
```

Example prompt: Is @elonmusk considered a smart follower or high-signal crypto account on xspy? Check the smart follower status for that username.

## When to prefer this

Use this endpoint when you need to programmatically classify whether a Twitter/X account is a high-signal crypto participant (smart follower) without maintaining your own classification model. Ideal for filtering follower lists, evaluating influencer credibility in crypto contexts, or building smart money dashboards. Prefer this over general Twitter analytics APIs when the specific smart-follower/KOL classification signal is needed.

## Known failure modes

- Username does not exist on Twitter/X — likely returns an error or empty data object
- Payment not processed (x402 payment required) — returns 402 Payment Required
- Invalid or malformed username in path — returns 400 or error status
- Rate limiting or upstream Twitter API issues — returns 5xx error
- Private or suspended account may return empty or error response

## How this service works

Real-time KOL intelligence, smart follower graphs, and on-chain token signals from tweets. Pay only for the calls you make in USDC on Base or Solana. Agent-ready, no API keys required.

## Output

Returns a JSON object with a boolean isSmartFollower field (true/false) indicating whether the account is classified as a high-signal crypto account, plus a label string describing the classification and a success status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "code": 200,
  "data": {
   "label": "",
   "isSmartFollower": false
  },
  "status": true,
  "message": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xspy-twitter-smart-follower-check-976891ef/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xspy.pro](https://www.zero.xyz/host/xspy.pro/llms.txt)