# Cross-Venue BTC Spot Volume Aggregator

> Cross-Venue BTC Spot Volume Aggregator is a paid API for AI agents from nonvisceral-eloisa-mousily.ngrok-free.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Aggregates BTC spot trading volume across 7 major exchanges into 15-minute bars, reporting per-venue breakdown, concentration metrics, and a balanced/leaning/concentrated verdict

## Facts

- Endpoint: GET https://nonvisceral-eloisa-mousily.ngrok-free.dev/api/volume-aggregate
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nonvisceral-eloisa-mousily-ngrok-free-dev-9edf2ce4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_soI1yMHUmaRvei98_KrHv

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 nonvisceral-eloisa-mousily-ngrok-free-dev-9edf2ce4
```

Example prompt: Pull the latest cross-venue BTC spot volume aggregate — I want to see the per-exchange breakdown for the current 15-minute bar, the verdict on whether volume is concentrated or balanced, and which venue is dominating right now.

## When to prefer this

Use this endpoint when you need a cross-venue spot volume signal rather than a single-exchange feed — ideal for detecting institutional rotation, identifying which exchange is absorbing the most BTC spot flow, or confirming whether volume concentration is building at one venue. Prefer this over single-exchange volume APIs when the goal is to understand relative venue dominance or balanced/concentrated market structure.

## Known failure modes

- One or more exchange feeds unavailable — reflected in venue_status with 'error' and reduced reachable_venues count
- Stale data if all upstream exchange APIs are delayed — check updated_at timestamp
- Empty or partial latest_bar if fewer than expected venues respond
- Network timeout to ngrok endpoint returning 502/504
- Payment failure returning 402 if USDC micropayment not processed

## How this service works

Cross-venue BTC spot volume aggregated across 7 exchanges (Binance/Bybit/OKX/Coinbase/Kraken/MEXC/Bitfinex). Per-venue 15-min BTC volume + total, last 6 bars for trend, venue_status, top_venue + top_venue_share, verdict (concentrated/leaning/balanced). Cross-venue spot-flow rotation signal single-venue feeds miss.

## Output

Returns the latest 15-minute bar with total BTC volume and per-venue breakdown, the last 6 bars for trend analysis, per-venue status (ok/error/unknown), the top venue by volume, its concentration share (0-1), and a verdict string: 'concentrated' (top share >= 0.50), 'leaning' (>= 0.35), or 'balanced' (< 0.35).

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "verdict": {
       "type": "string"
      },
      "top_venue": {
       "type": "string"
      },
      "latest_bar": {
       "type": "object"
      },
      "updated_at": {
       "type": "string"
      },
      "recent_bars": {
       "type": "array"
      },
      "venue_status": {
       "type": "object"
      },
      "top_venue_share": {
       "type": "number"
      },
      "reachable_venues": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nonvisceral-eloisa-mousily-ngrok-free-dev-9edf2ce4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nonvisceral-eloisa-mousily.ngrok-free.dev](https://www.zero.xyz/host/nonvisceral-eloisa-mousily.ngrok-free.dev/llms.txt)