# NEXUS Oracle Signal

> NEXUS Oracle Signal is a paid API for AI agents from nexus-agent-xa12.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns a bullish/bearish/neutral trading signal with confidence score and reasoning for a given crypto asset ticker

## Facts

- Endpoint: GET https://nexus-agent-xa12.onrender.com/oracle/signal
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nexus-oracle-signal-d33256f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zdbxDc8peuq1bRWmDkeOE

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 nexus-oracle-signal-d33256f0
```

Example prompt: What's the current NEXUS oracle signal for BTC — is it bullish or bearish, and how confident is the model?

## When to prefer this

Choose this endpoint when you need a quick, paid, confidence-scored directional signal (bullish/bearish/neutral) for a specific crypto asset backed by on-chain reasoning. Prefer it over free sentiment APIs when you need a structured machine-readable signal with a confidence score and explanation. Best suited for agents making lightweight per-asset trading assessments rather than bulk portfolio analysis.

## Known failure modes

- Missing or invalid 'symbol' query parameter returns an error or empty result
- Unknown ticker symbol may return no signal or a low-confidence result
- Payment failure via x402 results in 402 Payment Required response and no data
- Service unavailable on Render cold start may cause timeout or 503
- Network instability on Render free tier may cause intermittent failures

## How this service works

Pay-per-call financial data. Streamable HTTP MCP. x402 USDC on Base. Not financial advice.

## Output

A JSON object containing the asset ticker (e.g. 'BTC'), a directional signal ('BULLISH', 'BEARISH', or 'NEUTRAL'), a natural language reason explaining the signal (e.g. 'Strong on-chain accumulation and momentum'), a confidence score between 0 and 1, and the source identifier 'NEXUS'. Costs $0.05 USDC per call via x402 on Base.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Ticker symbol e.g. BTC, ETH"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asset": "BTC",
  "reason": "Strong on-chain accumulation and momentum",
  "signal": "BULLISH",
  "source": "NEXUS",
  "confidence": 0.78
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nexus-oracle-signal-d33256f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-agent-xa12.onrender.com](https://www.zero.xyz/host/nexus-agent-xa12.onrender.com/llms.txt)