# Ethereum Liquid Staking Token Exchange Rates & APY

> Ethereum Liquid Staking Token Exchange Rates & APY is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-20).

Returns on-chain exchange rates of major Ethereum liquid staking tokens (wstETH, rETH, cbETH, weETH, sfrxETH) against ETH, plus current APY from DefiLlama.

## Facts

- Endpoint: POST https://api.vextorium.com/staking-liquido-pago?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ethereum-liquid-staking-token-exchange-rates-apy-0cabc466
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xw1qT6TneohcvKhWG_E1p

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 ethereum-liquid-staking-token-exchange-rates-apy-0cabc466 -d '<json body>'
```

Example prompt: What are the current on-chain exchange rates and APYs for all the major Ethereum liquid staking tokens — wstETH, rETH, cbETH, weETH, and sfrxETH?

## When to prefer this

Use this endpoint when you need authoritative, on-chain exchange rates for Ethereum liquid staking tokens (wstETH, rETH, cbETH, weETH, sfrxETH) rather than market prices, paired with DefiLlama APY — ideal for yield comparisons, portfolio valuation, or DeFi analytics dashboards where contract-level accuracy matters.

## Known failure modes

- Ethereum RPC node unavailable — on-chain rate read fails
- DefiLlama API unavailable — APY data missing or null
- Network timeout reading from contract
- Stale data if block confirmation is delayed

## How this service works

On-chain exchange rate of the main Ethereum liquid staking tokens (wstETH, rETH, cbETH, weETH, sfrxETH) against ETH, read from their contracts, with current APY from DefiLlama.

## Output

A JSON array of liquid staking token objects, each containing: token symbol (e.g. wstETH), the base asset it denominates against (e.g. ETH or stETH), the on-chain exchange rate ('vale') indicating how many base asset units 1 token is worth, current APY percentage from DefiLlama, and the Ethereum contract address. Also includes a note explaining the 'vale' field and the data source.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [],
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "nota": {
       "type": [
        "string",
        "null"
       ]
      },
      "fuente": {
       "type": [
        "string",
        "null"
       ]
      },
      "tokens": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "object"
        ],
        "properties": {
         "en": {
          "type": [
           "null",
           "string"
          ]
         },
         "vale": {
          "type": [
           "null",
           "number"
          ]
         },
         "token": {
          "type": [
           "null",
           "string"
          ]
         },
         "apy_pct": {
          "type": [
           "null",
           "number"
          ]
         },
         "contrato": {
          "type": [
           "null",
           "string"
          ]
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "nota": "«vale» = cuántas unidades del activo base recibes por 1 token (sube con las recompensas de staking).",
  "fuente": "Contratos en Ethereum + DefiLlama (APY)",
  "tokens": [
   {
    "en": "stETH",
    "vale": 1.24540188,
    "token": "wstETH",
    "apy_pct": 2.238,
    "contrato": "0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0"
   },
   {
    "en": "ETH",
    "vale": 1.17295968,
    "token": "rETH",
    "apy_pct": 2.17,
    "contrato": "0xae78736Cd615f374D3085123A210448E74Fc6393"
   },
   {
    "en": "ETH",
    "vale": 1.14078757,
    "token": "cbETH",
    "apy_pct": 2.303,
    "contrato": "0xBe9895146f7AF43049ca1c1AE358B0541Ea49704"
   },
   {
    "en": "eETH",
    "vale": 1.10491857,
    "token": "weETH",
    "apy_pct": 2.298,
    "contrato": "0xCd5fE23C85820F7B72D0926FC9b05b43E359b7ee"
   },
   {
    "en": "frxETH",
    "vale": 1.17077937,
    "token": "sfrxETH",
    "apy_pct": 2.514,
    "contrato": "0xac3E018457B222d93114458476f3E3416Abbe38F"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ethereum-liquid-staking-token-exchange-rates-apy-0cabc466/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)