# BTC/USD Buy vs Sell Flow + WaveTrend 4h Signal

> BTC/USD Buy vs Sell Flow + WaveTrend 4h Signal is a paid API for AI agents from micro-saas-agent.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-19).

Returns a large-print buy/sell volume summary for BTC/USD from Kraken's last 1000 public trades, joined with the current WaveTrend 10/21/4 4-hour oscillator state.

## Facts

- Endpoint: GET https://micro-saas-agent.onrender.com/api/flows/BTC?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/btc-usd-buy-vs-sell-flow-wavetrend-4h-signal-60ea0f18
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LuTVq5-TEdWstxqkHD2Qt

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 btc-usd-buy-vs-sell-flow-wavetrend-4h-signal-60ea0f18
```

Example prompt: Give me the current BTC/USD buy vs sell summary from Kraken's last 1000 trades plus the WaveTrend 4-hour oscillator state — I want to know if buying or selling pressure dominates right now.

## When to prefer this

Use this endpoint when you need a fast, combined view of BTC/USD short-term trade flow imbalance and the WaveTrend 4h oscillator state from a single lightweight call. Prefer this over generic price feeds when you want both microstructure (buy/sell pressure from recent prints) and a momentum oscillator signal in one response. Note this is Kraken-only and not an on-chain whale wallet tracker.

## Known failure modes

- Kraken public trade API unavailable — stale or missing trade data
- WaveTrend calculation may lag if fewer than required candles are available
- Single-venue data (Kraken only) may not reflect global BTC order flow
- Render.com cold start latency if the service has been idle
- Payment (x402) failure if USDC balance or header is not provided correctly

## How this service works

Large-print buy vs sell summary for BTC/USD from Kraken public trades (last 1000 prints; single venue, not on-chain whale wallets) joined with WaveTrend 10/21/4 4h state. $0.02.

## Output

Returns a large-print summary showing buy volume vs sell volume (and ratio) from the last 1000 Kraken BTC/USD public trades, combined with the current WaveTrend 10/21/4 oscillator values (wt1, wt2) on the 4-hour timeframe, including band state (overbought/oversold/neutral).

## 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"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/btc-usd-buy-vs-sell-flow-wavetrend-4h-signal-60ea0f18/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from micro-saas-agent.onrender.com](https://www.zero.xyz/host/micro-saas-agent.onrender.com/llms.txt)