# Market Intelligence API – Smart Money Flow by Symbol

> Market Intelligence API – Smart Money Flow by Symbol is a paid API for AI agents from api.marketintelligenceapi.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).

Returns on-chain smart-money wallet rankings, buy/sell pressure, net flow bias, and PnL analytics for a given crypto or tokenized US equity symbol.

## Facts

- Endpoint: GET https://api.marketintelligenceapi.com/api/v1/intelligence/smart-money/%7Bsymbol%7D?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/market-intelligence-api-smart-money-flow-by-symbol-668d26c7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XZh4uFlLGP5Oiimsetm0w

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 market-intelligence-api-smart-money-flow-by-symbol-668d26c7
```

Example prompt: What is smart money doing with ETHUSD right now — are the top on-chain wallets net buying or selling, and who are the best performers by PnL and win rate?

## When to prefer this

Use this endpoint when you need on-chain smart wallet intelligence for a specific crypto or tokenized US equity — particularly to assess directional bias (net buying vs selling) and top-wallet PnL rankings before making a trading decision. Prefer this over generic price feeds or news sentiment endpoints when you want to understand what informed, high-performing wallets are actually doing rather than what analysts are saying.

## Known failure modes

- Unknown or unsupported symbol returns an error or empty result
- Payment failure (402) if x402 USDC micropayment is not properly attached
- Rate limiting if too many calls are made in short succession
- Stale or missing data if the symbol has low on-chain activity
- Network timeout for real-time data fetch under high load

## How this service works

Pay-per-call market intelligence for AI agents across crypto, US and European stocks, rates and FX: on-chain buy/sell pressure, trading decisions from $0.05, token risk checks on six chains, webhook alerts, pre-trade verdicts, technicals, perps funding, smart money, SEC and ESEF fundamentals, insider trades, European short interest, ECB rates and FX, datasets and news.

## Output

Returns a JSON object with the symbol's mark price, smart money net flow in USD over the last 2 days, directional bias (NET_BUYING or NET_SELLING), total wallets tracked and ranked, and a list of top wallets with their total PnL, realized PnL, win rate percentage, number of closed positions, current open position size in USD, and average holding time in minutes.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "symbol": "ETHUSD",
  "markPrice": 2679.2,
  "topWallets": [
   {
    "wallet": "0x3f5c...9a1e",
    "totalPnlUsd": 18422.5,
    "realizedPnlUsd": 15210,
    "winRatePercent": 71.4,
    "closedPositions": 14,
    "openPositionUsd": 42100,
    "averageHoldingMinutes": 312
   }
  ],
  "walletsRanked": 612,
  "walletsTracked": 4210,
  "flowLast2DaysUsd": {
   "smartWallets": 61,
   "smartMoneyBias": "NET_BUYING",
   "allWalletsNetUsd": -220150,
   "smartMoneyNetUsd": 128400
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/market-intelligence-api-smart-money-flow-by-symbol-668d26c7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.marketintelligenceapi.com](https://www.zero.xyz/host/api.marketintelligenceapi.com/llms.txt)