# Octodamus Order ChainFlow Whales

> Octodamus Order ChainFlow Whales is a paid API for AI agents from api.octodamus.com, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-14).

Returns whale-driven on-chain order flow signals for BTC including buy/sell/hold action, bullish/bearish/neutral sentiment, BTC trend direction, fear/greed index, Polymarket edge data, and confidence score

## Facts

- Endpoint: GET https://api.octodamus.com/v2/order_chainflow/whales
- Price: $0.35/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/octodamus-order-chainflow-whales-474378b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_72XKQjlqL4mEiMaIoRbLC

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 octodamus-order-chainflow-whales-474378b7
```

Example prompt: What are crypto whales doing with BTC right now — should I buy, sell, or hold? Give me the full Octodamus Order ChainFlow Whales signal including trend direction, fear/greed score, and Polymarket edge.

## When to prefer this

Use this endpoint when you need aggregated whale on-chain order flow signals specifically for BTC, combined with fear/greed sentiment and Polymarket prediction market edge — ideal for agents making Bitcoin trading decisions or monitoring large-player momentum. Prefer over DEX-specific endpoints when you want a holistic whale signal rather than a single exchange view.

## Known failure modes

- Missing or invalid PAYMENT-SIGNATURE header returns 402 Payment Required
- Expired or replayed EIP-3009 signature rejected
- Insufficient USDC balance on Base mainnet causes payment failure
- Rate limiting if too many calls in short succession
- Network congestion on Base mainnet may delay payment verification

## How this service works

Octodamus Order ChainFlow Whales -- pay-per-call x402 endpoint on Base. Preview: https://api.octodamus.com/v2/order_chainflow/whales/preview

## Output

Returns a JSON object with: action enum (BUY/SELL/HOLD), signal enum (BULLISH/BEARISH/NEUTRAL), btc_trend enum (UP/DOWN/SIDEWAYS), a confidence score between 0 and 1, a fear_greed score between 0 and 100, a reasoning string explaining the signal, and a polymarket_edge object with prediction market data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "type": "string",
     "const": "GET"
    },
    "headers": {
     "type": "object",
     "required": [
      "PAYMENT-SIGNATURE"
     ],
     "properties": {
      "PAYMENT-SIGNATURE": {
       "type": "string",
       "description": "x402 EIP-3009 USDC payment signature (Base mainnet)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "action": {
     "enum": [
      "BUY",
      "SELL",
      "HOLD"
     ],
     "type": "string"
    },
    "signal": {
     "enum": [
      "BULLISH",
      "BEARISH",
      "NEUTRAL"
     ],
     "type": "string"
    },
    "btc_trend": {
     "enum": [
      "UP",
      "DOWN",
      "SIDEWAYS"
     ],
     "type": "string"
    },
    "reasoning": {
     "type": "string"
    },
    "confidence": {
     "type": "number",
     "maximum": 1,
     "minimum": 0
    },
    "fear_greed": {
     "type": "number",
     "maximum": 100,
     "minimum": 0
    },
    "polymarket_edge": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/octodamus-order-chainflow-whales-474378b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.octodamus.com](https://www.zero.xyz/host/api.octodamus.com/llms.txt)