# YieldProbe Stablecoin Peg Monitor

> YieldProbe Stablecoin Peg Monitor is a paid API for AI agents from yieldprobe.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Returns price deviation from $1.00, depeg flag, and 1d/7d supply changes for USD stablecoins above a configurable circulating supply floor.

## Facts

- Endpoint: GET https://yieldprobe.com/v1/stables/peg?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/yieldprobe-stablecoin-peg-monitor-0184ee67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LYpjCHjVzfiyzUJrCmNeQ

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 yieldprobe-stablecoin-peg-monitor-0184ee67
```

Example prompt: Show me all USD stablecoins with a circulating supply above $50 million — flag any that have deviated from their $1.00 peg by more than 0.3%, and include their 1-day and 7-day supply changes.

## When to prefer this

Use this endpoint when you need real-time stablecoin peg health data including deviation magnitude, depeg flags, and supply trend signals across multiple stablecoins in a single call. Prefer it over general market data APIs when you specifically need the depeg flag logic, configurable deviation thresholds, and supply change analytics combined in one response. Ideal for DeFi risk monitoring agents, arbitrage systems, and dashboards that need to track the full stablecoin landscape.

## Known failure modes

- Invalid limit value (outside 1–200 range) returns an error
- Invalid threshold or minCirculating format causes a bad request response
- No stablecoins match the floor — returns an empty list
- Upstream price data unavailable — may return stale or partial results
- Payment not settled (x402) — request rejected before data is returned

## How this service works

Pay-per-call DeFi intelligence API for AI agents over x402: yields, APY anomalies, stablecoin pegs, token risk. USDC on Base.

## Output

Returns a list of stablecoins (up to the specified limit or full set) each with: current price, deviation from $1.00, a boolean depeg flag based on the threshold, 1-day supply change percentage, and 7-day supply change percentage. Only stablecoins above the circulating supply floor are included.

## 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",
     "properties": {
      "full": {
       "enum": [
        "true",
        "false"
       ],
       "type": "string",
       "description": "return every tracked stablecoin instead of the top list"
      },
      "limit": {
       "type": "string",
       "description": "how many of the largest stablecoins to include, 1..200, default 20"
      },
      "threshold": {
       "type": "string",
       "description": "abs deviation from 1.0 to flag, default 0.005"
      },
      "minCirculating": {
       "type": "string",
       "description": "USD floor, default 10000000"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/yieldprobe-stablecoin-peg-monitor-0184ee67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from yieldprobe.com](https://www.zero.xyz/host/yieldprobe.com/llms.txt)