# Cross-Venue BTC Taker-Flow CVD Aggregate

> Cross-Venue BTC Taker-Flow CVD Aggregate 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 cumulative volume delta (CVD) taker-flow data for Bitcoin across 7 major exchanges, providing per-venue buy/sell volume metrics, an aggregate verdict, and a directional consensus score.

## Facts

- Endpoint: GET https://nonvisceral-eloisa-mousily.ngrok-free.dev/api/cvd-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-c9c31b36
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yafQuVqw71lFM2b05QS-4

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-c9c31b36
```

Example prompt: What's the current cross-venue BTC taker-flow CVD signal right now — are we seeing buy pressure, sell pressure, or divergence across Binance, Bybit, OKX, Coinbase, and the other venues, and how many exchanges are agreeing with the aggregate direction?

## When to prefer this

Use this endpoint when you need a cross-venue rotation signal that single-exchange CVD cannot provide — specifically to detect when taker-flow is concentrated at one venue while others diverge, a common institutional smart-money tell. Prefer this over single-venue CVD APIs when your trading strategy requires detecting inter-exchange flow rotation or when you want a consensus-weighted directional signal for BTC.

## Known failure modes

- One or more exchanges unreachable — reachable_venues count will be lower than 7, potentially reducing signal reliability
- Stale data if upstream exchange WebSocket feeds are delayed or disconnected
- HTTP 402 if payment is not provided or USDC balance is insufficient
- Service unavailable if the ngrok tunnel is offline or the host is unreachable
- Empty or null per_exchange entries for venues that did not respond in the current tick

## How this service works

Cross-venue BTC taker-flow CVD aggregated across 7 exchanges (Binance/Bybit/OKX/Bitget/Coinbase/MEXC/Hyperliquid). Per-venue cvd_btc + cvd_usd + buy_vol_btc + sell_vol_btc, aggregate verdict (buy_pressure/sell_pressure/neutral/diverging) and directional consensus 0-1 (fraction of venues agreeing with the aggregate sign). Cross-venue taker-flow rotation signal beyond single-venue CVD.

## Output

Returns aggregate_cvd_btc (cross-venue cumulative volume delta in BTC), aggregate_cvd_usd (same in USD), per_exchange breakdown (cvd_btc, cvd_usd, buy_vol_btc, sell_vol_btc, window_sec, n_trades per venue), a verdict string (buy_pressure/sell_pressure/neutral/diverging), a consensus score from 0 to 1 indicating the fraction of venues agreeing with the aggregate sign, reachable_venues count, and updated_at timestamp.

## 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"
      },
      "consensus": {
       "type": "number"
      },
      "updated_at": {
       "type": "string"
      },
      "per_exchange": {
       "type": "object"
      },
      "reachable_venues": {
       "type": "number"
      },
      "aggregate_cvd_btc": {
       "type": "number"
      },
      "aggregate_cvd_usd": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nonvisceral-eloisa-mousily-ngrok-free-dev-c9c31b36/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)