# DripMetrics AI – Average Trade Size

> DripMetrics AI – Average Trade Size is a paid API for AI agents from api.dripmetrics.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).

Returns the average trade size (in base currency units) for a given trading pair on Binance or Coinbase over a rolling lookback window of 30m, 1h, 2h, or 3h.

## Facts

- Endpoint: GET https://api.dripmetrics.ai/metrics/average-trade-size
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dripmetrics-ai-average-trade-size-0f2aedae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h5eJ1bXh435AacNbA_BiP

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 dripmetrics-ai-average-trade-size-0f2aedae
```

Example prompt: What's the average trade size for BTC-USD on Coinbase over the last hour? Pull the DripMetrics microstructure metric so I can see how large trades have been running.

## When to prefer this

Choose this endpoint when you need a real-time, rolling average trade size metric computed directly from raw exchange trade feeds for Binance or Coinbase. It is ideal for market microstructure analysis, sizing comparisons, or feeding trading algorithms that need fresh, precise aggregation over short windows (30m–3h). Prefer it over order-book snapshots or OHLCV candle data when you specifically need a trade-level size average rather than price-based metrics.

## Known failure modes

- Unsupported pair/exchange combination returns an error or partial data with coverageRatio < 1
- Window lengths 2h and 3h only supported for BTCUSDT/BTC-USD — other pairs will error or return partial coverage
- If exchange data feed is temporarily unavailable, partialData flag is true and effectiveWindowMinutes may be less than requested
- Invalid enum values for exchange or window result in schema validation errors
- Payment not received (x402) results in 402 response before any data is returned

## How this service works

DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. Average Trade Size measures mean base-asset trade size over the specified lookback window. Discovery examples use the latest 30m window.

## Output

Returns a JSON object with the metric name ('average-trade-size'), the trading pair, exchange, lookback window, computed value (base currency units per trade), trade count, timestamps for the first and last trade observed, computation timestamp, and a coverage object indicating whether the full requested window was fetched, the effective window covered, and the coverage ratio (0–1).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "pair",
      "exchange",
      "window"
     ],
     "properties": {
      "pair": {
       "type": "string",
       "description": "Exchange-native trading pair symbol such as BTCUSDT, ETH-USD, BTC, or xyz:TSLA."
      },
      "window": {
       "enum": [
        "30m",
        "1h",
        "2h",
        "3h"
       ],
       "type": "string",
       "description": "Lookback window. Hyperliquid supports 30m and 1h; 2h and 3h are currently BTCUSDT/BTC-USD only."
      },
      "exchange": {
       "enum": [
        "binance",
        "coinbase",
        "hyperliquid"
       ],
       "type": "string",
       "description": "Exchange adapter to source recent trades from."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "metric",
      "pair",
      "exchange",
      "window",
      "value",
      "computedAt",
      "tradeCount",
      "firstTradeTime",
      "lastTradeTime",
      "coverage"
     ],
     "properties": {
      "pair": {
       "type": "string"
      },
      "value": {
       "type": "number"
      },
      "metric": {
       "type": "string"
      },
      "window": {
       "enum": [
        "30m",
        "1h",
        "2h",
        "3h"
       ],
       "type": "string"
      },
      "coverage": {
       "type": "object",
       "required": [
        "requestedWindowMinutes",
        "effectiveWindowMinutes",
        "coverageRatio",
        "partialData",
        "completeFetch",
        "errorMessage"
       ],
       "properties": {
        "partialData": {
         "type": "boolean"
        },
        "errorMessage": {
         "type": [
          "string",
          "null"
         ]
        },
        "completeFetch": {
         "type": "boolean"
        },
        "coverageRatio": {
         "type": "number",
         "maximum": 1,
         "minimu
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "pair": "BTC-USD",
  "value": 0.601071,
  "metric": "average-trade-size",
  "window": "30m",
  "coverage": {
   "partialData": false,
   "errorMessage": null,
   "completeFetch": true,
   "coverageRatio": 1,
   "effectiveWindowMinutes": 30,
   "requestedWindowMinutes": 30
  },
  "exchange": "coinbase",
  "components": {},
  "computedAt": "2026-05-23T14:00:00.000Z",
  "tradeCount": 428,
  "lastTradeTime": "2026-05-23T13:59:58.000Z",
  "firstTradeTime": "2026-05-23T13:00:02.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dripmetrics-ai-average-trade-size-0f2aedae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.dripmetrics.ai](https://www.zero.xyz/host/api.dripmetrics.ai/llms.txt)