# Market Intelligence API – Trade-Flow Signal & Liquidity

> Market Intelligence API – Trade-Flow Signal & Liquidity is a paid API for AI agents from api.marketintelligenceapi.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).

Returns real-time trade-flow signals (price change, buy/sell pressure, momentum, anomaly, large trades, confidence) and on-chain liquidity costs (basis points for $1k/$10k/$50k trades) for a given asset symbol.

## Facts

- Endpoint: GET https://api.marketintelligenceapi.com/api/v1/intelligence/:symbol?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/market-intelligence-api-trade-flow-signal-liquidity-52bcd18e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f1inRrVRxaWPWZ2DRiQO9

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-trade-flow-signal-liquidity-52bcd18e
```

Example prompt: Before I place a trade, pull the current trade-flow signal and liquidity score for ETHUSD using the 5-minute window — I want to see buy/sell pressure, any anomalies, and how much a $10k market buy would cost me in basis points.

## When to prefer this

Use this endpoint when you need a fast, real-time read on a single asset's order flow dynamics and liquidity cost before executing a trade or answering a market question. It is ideal when you want a structured, quantified signal (not just price) covering momentum, anomaly detection, and slippage cost — all in one call. Prefer the comprehensive $1 endpoint if you need a full multi-dataset recommendation; prefer this for lightweight, low-cost per-symbol checks.

## Known failure modes

- 404 returned for unknown or uncovered symbols — no charge applied
- Invalid window parameter (not 1m, 5m, or 15m) returns an error
- Payment failure or insufficient USDC balance blocks the request
- Rate limiting if requests exceed plan thresholds
- Stale or missing data during market outages or low-liquidity periods

## How this service works

Crypto and stock order flow signal for one asset (e.g. ETHUSD, BTCUSD, NVDA, TSLA): price change, buy/sell pressure, momentum, activity and anomaly versus its own baseline, large trades, confidence and a plain-language interpretation, plus on-chain liquidity - cost in basis points of a $1k/$10k/$50k market order and a 0-100 liquidity score. Use before trading one asset.

## Output

A JSON object containing: price change, buy/sell pressure ratio, momentum score, activity level, anomaly score relative to the asset's own baseline, large-trade indicator, confidence score, a plain-language interpretation of the signal, and on-chain/market liquidity data including cost in basis points for $1k, $10k, and $50k market buys and sells, plus a 0–100 liquidity score.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "examples": [
        "ETHUSD"
       ],
       "description": "Any covered symbol, not only the example: crypto pairs (ETHUSD) and tokenized US stocks (NVDA); free list at /coverage. Unknown: 404, not charged."
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "window": {
       "type": "string",
       "default": "5m",
       "description": "Aggregation window of the signal: 1m, 5m or 15m"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "description": "Example JSON response returned by this endpoint"
    }
   },
   "additionalProperties": true
  }
 },
 "additionalProperties": false
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/market-intelligence-api-trade-flow-signal-liquidity-52bcd18e/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)