# MoneyTools Stablecoin Peg Monitor

> MoneyTools Stablecoin Peg Monitor is a paid API for AI agents from tools.moneytools.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-05).

Returns current price and peg deviation in basis points for up to 15 major stablecoins, with on_peg/watch/depeg status flags.

## Facts

- Endpoint: GET https://tools.moneytools.dev/v1/stablecoin-peg?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-05
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/moneytools-stablecoin-peg-monitor-c086c53d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WypwkrFE8W_brpo-uwy7R

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 moneytools-stablecoin-peg-monitor-c086c53d
```

Example prompt: Can you check the current peg status and deviation for USDT, USDC, and DAI — I want to know if any of them are showing a watch or depeg alert right now?

## When to prefer this

Use this endpoint when you need real-time peg health data for multiple major stablecoins in a single call, particularly when you need basis-point precision and categorical status (on_peg/watch/depeg) rather than just raw price. It covers 15 stablecoins including fiat-backed, algorithmic, and Euro-denominated coins. Prefer it over generic crypto price APIs when stablecoin peg deviation and risk status is the primary concern.

## Known failure modes

- Free tier exhausted (10 calls/day) without payment method configured — returns HTTP 402 with PAYMENT-REQUIRED header
- Invalid symbol in comma-separated list — may return empty result or error for unrecognized tickers
- Upstream price feed unavailable — may return stale or missing data for affected coins
- Payment failure via x402 — call not charged and result not returned
- Malformed query parameter — HTTP 400 or unexpected empty response

## How this service works

Stablecoin peg monitor: Current price and deviation in bps for 15 major stablecoins (USDT, USDC, DAI, USDS, USDe, PYUSD, FDUSD, EURC...) with on_peg / watch / depeg status. Free tier 10/day; then $0.001 via x402 (HTTP 402 + PAYMENT-REQUIRED) or X-API-Key credits. Not charged on failure. $0.001 USDC per call via x402 on Base. Run by MoneyTools.

## Output

A JSON object containing, for each requested stablecoin: current price, deviation from peg in basis points, and a status label (on_peg / watch / depeg). Also includes payment metadata (charged boolean, network, amountUsd, transaction hash) and optional plan/partner hints under _moneytools.

## 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": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "symbols": {
       "type": "string",
       "examples": [
        "USDC,USDT,USDE"
       ],
       "description": "comma list (default all)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "properties": {
      "payment": {
       "type": "object",
       "properties": {
        "charged": {
         "type": "boolean"
        },
        "network": {
         "type": "string"
        },
        "amountUsd": {
         "type": "string"
        },
        "transaction": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      },
      "freeTier": {
       "type": "object"
      },
      "_moneytools": {
       "type": "object",
       "description": "optional plan / partner hints"
      }
     },
     "description": "Tool-specific JSON result (see llms.txt / openapi.json). Always includes payment info.",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/moneytools-stablecoin-peg-monitor-c086c53d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.moneytools.dev](https://www.zero.xyz/host/tools.moneytools.dev/llms.txt)