# Otto AI Stablecoin Watch

> Otto AI Stablecoin Watch is a paid API for AI agents from x402.ottoai.services, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns real-time stablecoin market intelligence including supply changes, peg deviation alerts, dominance rankings, and a narrative market summary

## Facts

- Endpoint: GET https://x402.ottoai.services/stablecoin-watch
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/otto-ai-stablecoin-watch-e4fcd4de
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cFRhAl45cuzll8KkrOz3b

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 otto-ai-stablecoin-watch-e4fcd4de
```

Example prompt: Give me a full stablecoin market rundown right now — are any coins depegged, how has total supply changed over the last 7 and 30 days, and which stablecoins are dominating?

## When to prefer this

Choose this endpoint when you need a comprehensive, pre-aggregated stablecoin market snapshot with narrative context, depeg alerts, and multi-timeframe supply changes in a single call. Prefer this over raw on-chain queries when you want an opinionated summary with risk signals rather than raw price feeds.

## Known failure modes

- Upstream data provider outage may return degraded:true with stale data
- Payment not included or insufficient USDC results in 402 Payment Required
- Network congestion on Base/Polygon/Solana may delay payment settlement
- Response may be stale if stalenessSec is high — check meta.validUntil

## How this service works

Is USDC/USDT/DAI holding its $1 peg, and is stablecoin supply growing or shrinking (risk-on vs risk-off)? Live peg deviation (bps), circulating supply + 1d/7d/30d flow, market dominance and chain spread for the top 30 USD stablecoins, plus downside depeg alerts for any coin trading >0.5% below peg. Sourced from DefiLlama (public). Served from a cached snapshot while fresh (≤1h) and regenerated on demand when a read finds it stale.

## Output

Returns a JSON object containing: an AI-generated narrative summarizing stablecoin market conditions; a list of depeg alerts with coin name, symbol, price, circulating supply, and basis-point deviation; 1-day, 7-day, and 30-day aggregate supply change percentages; a ranked list of top stablecoins with price, dominance %, peg mechanism, chains, and supply; total stablecoin count and total circulating USD; and metadata including freshness/staleness info.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "narrative": "Aggregate stablecoin supply expanded 0.84% over 7d (risk-on tilt). USDT and USDC are both within 2bps of peg. One tracked coin trades 69bps below peg on thin liquidity - watch redemption flow.",
   "depegAlerts": [
    {
     "name": "Example USD",
     "symbol": "USDX",
     "priceUsd": 0.9931,
     "circulatingUsd": 412550031,
     "pegDeviationBps": -69
    }
   ],
   "generatedAt": "2026-06-09T21:00:00.000Z",
   "marketChange": {
    "d1Pct": 0.12,
    "d7Pct": 0.84,
    "d30Pct": 2.31
   },
   "analysisStatus": "ok",
   "topStablecoins": [
    {
     "name": "Tether",
     "chains": [
      "Ethereum",
      "Tron",
      "Solana",
      "Base"
     ],
     "symbol": "USDT",
     "priceUsd": 0.9998,
     "change1dPct": 0.05,
     "change7dPct": 0.61,
     "change30dPct": 1.92,
     "dominancePct": 63.2,
     "pegMechanism": "fiat-backed",
     "circulatingUsd": 142055120031,
     "pegDeviationBps": -2
    },
    {
     "name": "USD Coin",
     "chains": [
      "Ethereum",
      "Base",
      "Solana",
      "Arbitrum"
     ],
     "symbol": "USDC",
     "priceUsd": 1.0001,
     "change1dPct": 0.21,
     "change7dPct": 1.43,
     "change30dPct": 3.55,
     "dominancePct": 27.2,
     "pegMechanism": "fiat-backed",
     "circulatingUsd": 61209311842,
     "pegDeviationBps": 1
    }
   ],
   "stablecoinCount": 30,
   "totalCirculatingUsd": 224731008451
  },
  "meta": {
   "degraded": false,
   "validUntil": "",
   "generatedAt": "",
   "stalenessSec": 0
  },
  "status": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/otto-ai-stablecoin-watch-e4fcd4de/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.ottoai.services](https://www.zero.xyz/host/x402.ottoai.services/llms.txt)