# Stablecoin Peg & Metadata Lookup

> Stablecoin Peg & Metadata Lookup is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.009/call, status unknown (last checked 2026-11-07).

Returns current peg data, rates, and metadata for a stablecoin by ticker symbol, chain, or contract address.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/stablecoin/peg?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-07
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablecoin-peg-metadata-lookup-562192f4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hMMluB_ooibuM_rOLhweV

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-metadata-lookup-562192f4
```

Example prompt: What's the current peg and rate data for USDC on Ethereum — can you look that up by its ticker and chain?

## When to prefer this

Use this endpoint when you need on-demand stablecoin peg rates or metadata keyed by ticker symbol, DefiLlama ID, or contract address — particularly inside agent workflows that need to verify stablecoin health before executing payments or when enriching DeFi data pipelines. It is a pay-per-call micropayment endpoint suited for low-frequency lookups rather than bulk batch queries.

## Known failure modes

- Unknown ticker or symbol returns empty or error result
- Invalid contract address format causes a bad request
- Unsupported chain name returns no data
- Payment not received (x402 flow incomplete) results in 402 response
- Network timeout if the underlying DeFi data source is slow

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a JSON object with a success flag and a result object containing stablecoin peg data, rate information, and metadata for the queried stablecoin (by ticker, chain, or contract address).

## 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",
     "required": [],
     "properties": {
      "chain": {
       "type": "string",
       "default": null,
       "description": "Chain for the address"
      },
      "symbol": {
       "type": "string",
       "default": null,
       "description": "Stablecoin ticker or DefiLlama id"
      },
      "address": {
       "type": "string",
       "default": null,
       "description": "Contract address (alternative)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablecoin-peg-metadata-lookup-562192f4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)