# Nansen Who-Bought-Sold Token Analysis

> Nansen Who-Bought-Sold Token Analysis is a paid API for AI agents from api.vibe.airforce, paid per call via x402, $0.06/call, status unknown (last checked 2026-09-14).

Returns Nansen on-chain data identifying which wallets (and wallet labels) bought or sold a specific token, enabling smart money flow analysis

## Facts

- Endpoint: POST https://api.vibe.airforce/api/x402/vibe-tools/data-provider/nansen/who-bought-sold
- Price: $0.06/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-vibe-airforce-68fc1724
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VuiHvRQxzm-FfKhRAE-vg

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 api-vibe-airforce-68fc1724 -d '<json body>'
```

Example prompt: Who has been buying and selling $ARB recently? I want to see which Nansen-labeled smart money wallets are accumulating or distributing it.

## When to prefer this

Use this endpoint when you need to identify specific wallet identities (with Nansen labels) behind buying and selling activity for a token — especially for detecting smart money accumulation or distribution. Prefer over generic DEX trade data endpoints when wallet labeling and classification (e.g. 'Smart Money', 'VC Fund', 'DEX Trader') is required to interpret who is moving a token.

## Known failure modes

- Unknown or unsupported token contract address returns empty or error response
- Network not supported by Nansen returns no data
- Malformed request body returns 400-level error
- Payment not processed or x402 auth failure returns 402
- Rate limiting or upstream Nansen API unavailability returns 503

## How this service works

Nansen blockchain analytics — 44 endpoints (smart money, profiler, TGM, perps, indicators)

## Output

Returns a structured dataset of wallet addresses and their Nansen labels (e.g. 'Smart Money', 'DEX Trader', 'Fund') that have bought or sold the specified token, along with transaction details such as amounts and timing, sourced from Nansen's on-chain intelligence layer.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "payload": {
   "type": "object",
   "description": "Nansen query parameters (chains, token_address, walletAddress, etc.)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-vibe-airforce-68fc1724/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vibe.airforce](https://www.zero.xyz/host/api.vibe.airforce/llms.txt)