> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hypedexer.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Builders

> Builder fee analytics and rankings

Hypedexer provides **builder** analytics: rankings, fee breakdowns, per-coin stats, and top users for each builder.

Use the **REST API** section below to query builder data on `api.hypedexer.com`.

## Are my users trading elsewhere?

`POST /builders/{builder_address}/external-activity` takes a list of wallet addresses and tells you, for each one, whether it has recent fills under **another builder code** (a competing app) or with **no builder code at all** (the official Hyperliquid UI, bots, any tool outside the builder program). Flagged wallets come first, sorted by external volume.

```bash theme={null}
curl -s -X POST "https://api.hypedexer.com/builders/0xYOUR_BUILDER/external-activity" \
  -H "X-API-Key: $HYPEDEXER_API_KEY" -H "Content-Type: application/json" \
  -d '{"users": ["0xabc…", "0xdef…"], "timeframe": "7d"}'
```

Builder attribution on fills is available from **2025-10-10**.


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