# QuantOracle Pairs Signal

> QuantOracle Pairs Signal is a paid API for AI agents from api.quantoracle.dev, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-13).

Generates a trading signal (buy/sell/hold) for a specified asset pair based on quantitative analysis

## Facts

- Endpoint: POST https://api.quantoracle.dev/v1/pairs/signal
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-quantoracle-dev-a77c8ce9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k_PAMz9dUe7_8QRRW2il-

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 api-quantoracle-dev-a77c8ce9 -d '<json body>'
```

Example prompt: What's the current QuantOracle trading signal for BTC/USDT — is it a buy, sell, or hold right now?

## When to prefer this

Use this endpoint when you need a fast, quantitatively-derived directional signal for a specific asset pair and want a single actionable recommendation rather than a full risk analysis or portfolio-level view. Prefer this over the risk/full-analysis endpoint when you only need the signal direction and not the complete risk breakdown.

## Known failure modes

- Unknown or unsupported trading pair returns an error or empty signal
- Invalid pair format causes a 400 bad request
- Insufficient market data for the pair results in a low-confidence or null signal
- Payment failure via x402 protocol blocks the request
- Rate limiting if too many calls are made in a short window

## How this service works

QuantOracle: /v1/pairs/signal

## Output

Returns a directional trading signal (e.g. buy/sell/hold) for the requested asset pair, likely including a confidence score or signal strength and relevant pair metadata.

## Example request

```json
{
 "series_a": [
  100,
  101,
  102,
  101,
  103,
  104,
  103,
  105,
  104,
  106,
  107,
  106,
  108,
  107,
  109,
  108,
  110,
  109,
  111,
  110
 ],
 "series_b": [
  50,
  50.5,
  51,
  50.8,
  51.5,
  52,
  51.8,
  52.5,
  52,
  53,
  53.5,
  53.2,
  54,
  53.8,
  54.5,
  54.2,
  55,
  54.8,
  55.5,
  55.2
 ]
}
```

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "title": "PairsSignalIn",
     "required": [
      "series_a",
      "series_b"
     ],
     "properties": {
      "name_a": {
       "type": "string",
       "title": "Name A",
       "default": "A",
       "description": "Name of asset A"
      },
      "name_b": {
       "type": "string",
       "title": "Name B",
       "default": "B",
       "description": "Name of asset B"
      },
      "series_a": {
       "type": "array",
       "items": {
        "type": "number"
       },
       "title": "Series A",
       "minItems": 20,
       "description": "Price series for asset A"
      },
      "series_b": {
       "type": "array",
       "items": {
        "type": "number"
       },
       "title": "Series B",
       "minItems": 20,
       "description": "Price series for asset B"
      },
      "significance": {
       "enum": [
        "0.01",
        "0.05",
        "0.10"
       ],
       "type": "string",
       "title": "Significance",
       "default": "0.05"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-quantoracle-dev-a77c8ce9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.quantoracle.dev](https://www.zero.xyz/host/api.quantoracle.dev/llms.txt)