# xspy.pro Smart Followers List

> xspy.pro Smart Followers List is a paid API for AI agents from xspy.pro, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-21).

Returns the top list of smart followers for a given Twitter/X KOL (Key Opinion Leader) account

## Facts

- Endpoint: GET https://xspy.pro/api/v1/pro/twitter/:username/smart-followers?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xspy-pro-648ed7f1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2taypp7yd9MdOeVnVl3NB

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-pro-648ed7f1
```

Example prompt: Who are the top smart followers of the Twitter account @elonmusk according to xspy?

## When to prefer this

Use this endpoint when you need the full ranked list of smart followers for a KOL, as opposed to just the count (use the count endpoint for cheaper lookups) or checking a single account (use the smart follower check endpoint). Best for deep influencer analysis and identifying who the quality audience of a KOL is.

## Known failure modes

- Unknown or misspelled username returns empty or error response
- Rate limiting or insufficient credits (10 credits required) returns 402 Payment Required
- Private or suspended Twitter accounts may return no data
- Username provided with @ symbol may cause parsing errors

## How this service works

Top smart followers (high-signal crypto accounts) of a Twitter/X account, with profiles and follower metrics.

## Output

A ranked list of the top 'smart' follower accounts for the specified Twitter/X KOL — likely including usernames, profile details, and quality/influence signals that identify them as high-value followers rather than bots or low-engagement accounts.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xspy-pro-648ed7f1/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)