# Otto AI Stablecoin Watch

> Otto AI Stablecoin Watch is a paid API for AI agents from dataendpoints-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns hourly-refreshed stablecoin market data with generatedAt/staleness metadata, served by Otto AI's data endpoint infrastructure.

## Facts

- Endpoint: GET https://dataendpoints-production.up.railway.app/stablecoin-watch
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/otto-ai-stablecoin-watch-cf52b71c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aRHVePRAqI7bZ0k1vAeTz

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-cf52b71c
```

Example prompt: Give me the latest stablecoin watch report — I want to see current stablecoin market conditions including any freshness/staleness info on when the data was last generated.

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.001 USDC) snapshot of stablecoin market data refreshed on an hourly cadence. Prefer this over real-time feeds when near-real-time accuracy is acceptable and cost efficiency matters. Useful for agents monitoring DeFi conditions, stablecoin de-pegging risk, or portfolio context.

## Known failure modes

- Payment not received (402 Payment Required) — agent must send 0.001 USDC via x402 protocol
- Data may be up to ~1 hour stale — check meta.generatedAt for freshness
- Endpoint temporarily unavailable on Railway infrastructure (503/timeout)
- Empty or partial data payload if upstream stablecoin data sources are down

## 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). Refreshed hourly.

## Output

A JSON object with status 'success', a data payload containing stablecoin market metrics and conditions (refreshed hourly), and a meta object including a generatedAt timestamp and staleness indicators.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "status",
      "data",
      "meta"
     ],
     "properties": {
      "data": {
       "description": "Endpoint payload (see meta.generatedAt for freshness)"
      },
      "meta": {
       "type": "object"
      },
      "status": {
       "enum": [
        "success"
       ],
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/otto-ai-stablecoin-watch-cf52b71c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dataendpoints-production.up.railway.app](https://www.zero.xyz/host/dataendpoints-production.up.railway.app/llms.txt)