# Lone Star Oracle Stablecoin Pulse

> Lone Star Oracle Stablecoin Pulse is a paid API for AI agents from stable.lonestaroracle.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns top stablecoins ranked by market cap with current and historical peg deviation (now/24h/7d), stability scores, and risk assessments

## Facts

- Endpoint: GET https://stable.lonestaroracle.xyz/pulse
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lone-star-oracle-stablecoin-pulse-18daf265
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KVgMtd-busA-_Nz62E4Yy

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 lone-star-oracle-stablecoin-pulse-18daf265
```

Example prompt: Give me a full stablecoin pulse check — show me the top stablecoins ranked by market cap along with their peg deviation right now, over the last 24 hours and 7 days, plus their stability scores and risk ratings.

## When to prefer this

Use this endpoint when you need a ranked, multi-timeframe view of stablecoin peg health and risk in a single call, especially when you want both current and historical (24h/7d) deviation alongside a pre-computed stability score rather than computing it yourself from raw price feeds.

## Known failure modes

- Payment not received or insufficient USDC — 402 Payment Required
- Upstream market data unavailable — 503 or empty response
- Rate limiting if called too frequently
- Stale data if market feed is delayed

## How this service works

Top stables ranked by mcap with peg deviation (now/24h/7d) + stability score + risk

## Output

A ranked list of top stablecoins by market cap, each with current peg deviation, 24-hour peg deviation, 7-day peg deviation, a stability score, and a risk assessment — giving a comprehensive snapshot of stablecoin health.

## Request schema (JSON Schema)

```json
{
 "name": "StablePulse - Stablecoin Peg Monitor (USDC, USDT & major stablecoin depeg risk)",
 "tags": [
  "stablecoin",
  "stablecoin-monitor",
  "peg",
  "peg-monitor",
  "peg-deviation",
  "depeg",
  "depeg-risk",
  "reserves",
  "stability",
  "monitor",
  "risk",
  "defi",
  "usdc",
  "usdt",
  "dai",
  "pyusd",
  "usde",
  "base"
 ],
 "type": "object",
 "version": "1.0.0",
 "category": "trading",
 "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",
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 },
 "description": "Monitor USDC, USDT and major stablecoin pegs. Real-time peg deviation (now / 24h max / 7d max) + composite 0-10 stability score + green/yellow/red depeg-risk category, plus a reserve & stability read, across the top stablecoins on Base, Ethereum and Solana. For agents, portfolio-risk tools, and DeFi services that need a fast, opinionated read on stablecoin safety."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lone-star-oracle-stablecoin-pulse-18daf265/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stable.lonestaroracle.xyz](https://www.zero.xyz/host/stable.lonestaroracle.xyz/llms.txt)