# Equity Signal API — Trend, Volatility, Volume & Momentum

> Equity Signal API — Trend, Volatility, Volume & Momentum is a paid API for AI agents from judicious-earnest-vaporware.replit.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns per-ticker equity signals including trend/regime, volatility regime, unusual-volume flag, momentum, and gap — computed from public market data for research and trading agents.

## Facts

- Endpoint: GET https://judicious-earnest-vaporware.replit.app/signal
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/equity-signal-api-trend-volatility-volume-momentum-e8e2f816
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GHRxwPAa42YAmWQZJlYjm

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 equity-signal-api-trend-volatility-volume-momentum-e8e2f816
```

Example prompt: Pull the equity signals for NVDA — I want to see its current trend regime, volatility regime, whether there's unusual volume, and any momentum or gap signals.

## When to prefer this

Use this endpoint when you need a quick, transparent, mechanically-derived set of equity signals for a single ticker — specifically trend/regime, volatility, unusual volume, momentum, and gap — without needing a full fundamental or ML-based analysis. Ideal for trading agents or research pipelines that want composable, interpretable signals computed from public market data at low cost per call.

## Known failure modes

- Missing or invalid ticker symbol returns a 400 or error response
- Ticker not found or unsupported results in an empty or error payload
- Payment not processed (x402 payment required at $0.003 USDC) results in a 402 response
- Replit hosting may introduce occasional cold-start latency or downtime
- Rate limiting or overload may return 429 or 503 responses

## How this service works

Mechanical per-ticker equity signal — trend/regime, volatility regime, unusual-volume flag, momentum and gap — computed transparently from public market data, for research and trading agents

## Output

A structured JSON object containing computed equity signals for the requested ticker: trend/regime classification, volatility regime label, a boolean unusual-volume flag, momentum signal value, and gap signal — all derived transparently from public market data.

## 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",
     "required": [
      "ticker"
     ],
     "properties": {
      "ticker": {
       "type": "string",
       "description": "Stock ticker symbol, e.g. AAPL, MSFT, NVDA, TSLA"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/equity-signal-api-trend-volatility-volume-momentum-e8e2f816/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from judicious-earnest-vaporware.replit.app](https://www.zero.xyz/host/judicious-earnest-vaporware.replit.app/llms.txt)