# Stelar Digital Price Check

> Stelar Digital Price Check is a paid API for AI agents from api.stelardigital.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-16).

Returns the current price, 24-hour and 7-day percent change, and a bullish/bearish/neutral momentum signal for a specified crypto asset

## Facts

- Endpoint: GET https://api.stelardigital.com/pricecheck
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stelar-digital-price-check-79eb01d9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZHqqyQN7_jIQAUHupF7w2

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 stelar-digital-price-check-79eb01d9
```

Example prompt: What's the current price of SOL and is it bullish, bearish, or neutral right now? I want to see the 24-hour and 7-day change too before I decide whether to trade.

## When to prefer this

Use this endpoint when you need a fast, low-cost ($0.005 USDC) pre-trade signal that combines price, short-term momentum (24h), medium-term momentum (7d), and a directional label (bullish/bearish/neutral) in a single call. Ideal for automated trading agents that need to gate decisions on current market direction without calling multiple data sources. Prefer this over general market data APIs when you specifically want the opinionated bullish/bearish/neutral signal alongside raw price data for one of the eight supported major crypto assets.

## Known failure modes

- Invalid or unsupported asset symbol returns an error (only ADA, BTC, DOGE, ETH, LTC, SOL, XLM, XRP are supported)
- Missing required 'asset' query parameter returns a 400 bad request
- Payment failure or insufficient USDC balance prevents call execution
- Upstream exchange data unavailability may cause stale or missing price data
- Rate limiting if the endpoint is called too frequently in rapid succession

## How this service works

Current price, 24h and 7d percent change, and a bullish/bearish/neutral signal for a crypto asset (SOL, BTC, ETH, XRP, DOGE, LTC, ADA, XLM). For agents needing a fast price-and-momentum check before a trade decision. Optional ?candles=N (up to 30, $0.05) adds N closed daily OHLC candles.

## Output

Returns the current USD price for the requested crypto asset, its 24-hour and 7-day percentage price changes, and a categorical momentum signal (bullish, bearish, or neutral) derived from recent price action — giving a fast at-a-glance read on price trend direction.

## 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": [
      "asset"
     ],
     "properties": {
      "asset": {
       "enum": [
        "ADA",
        "BTC",
        "DOGE",
        "ETH",
        "LTC",
        "SOL",
        "XLM",
        "XRP"
       ],
       "type": "string",
       "description": "Asset symbol, e.g. SOL"
      },
      "candles": {
       "type": "integer",
       "maximum": 30,
       "minimum": 1,
       "description": "Optional. Return up to N closed daily OHLC candles; upgrades price to $0.05."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": 1720400000,
  "asset": "SOL",
  "price": 172.4,
  "chg_7d": 4.2,
  "signal": "bullish",
  "chg_24h": 1.8
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stelar-digital-price-check-79eb01d9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.stelardigital.com](https://www.zero.xyz/host/api.stelardigital.com/llms.txt)