# Stablecoin Peg Monitor

> Stablecoin Peg Monitor is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Returns live DEX price deviation from the $1.00 peg for major USD stablecoins on Base, with per-coin basis-point deviation and health status.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/stablecoin-peg?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablecoin-peg-monitor-c462e79e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zWIjx-S51m68fZhZA-X02

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 stablecoin-peg-monitor-c462e79e
```

Example prompt: Check the current peg status for all major stablecoins on Base — I want to know if any of them have drifted from $1, and by how many basis points, and whether they're healthy or showing depeg risk.

## When to prefer this

Use this endpoint when an AI agent or DeFi system needs to verify stablecoin purchasing power before executing trades, pricing assets, or reporting portfolio value — especially when a silent depeg (where balanceOf is unchanged but market value has fallen) would cause mispricing. Prefer this over static $1 assumptions whenever operating in volatile market conditions or during periods of systemic DeFi stress.

## Known failure modes

- Price feed outage returns 'unknown' status rather than a healthy peg signal
- Invalid symbol parameter returns an error or empty result
- Network latency may cause slightly stale DEX prices
- Only covers Base chain — stablecoin pegs on other chains not reflected

## How this service works

Live DEX price vs the $1.00 peg for major USD-pegged stablecoins on Base (USDC, USDT, DAI, USDbC). A depeg is silent — balanceOf doesn't change, only what it's worth does — so an agent parked in stables reprices everything off a stale $1. Reports per-coin deviation in basis points and a healthy/watch/depeg status, worst-case across the set. A feed outage reads as 'unknown', never a healthy peg. Pass symbol= for one coin. Not financial advice.

## Output

Returns per-coin data including live DEX price, deviation from $1.00 in basis points, and a status label (healthy/watch/depeg). Also reports the worst-case status across the monitored stablecoin set. If a price feed is unavailable, the status is reported as 'unknown' rather than defaulting to healthy.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "One stablecoin (optional, default all)"
      }
     }
    }
   },
   "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/stablecoin-peg-monitor-c462e79e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)