# Vextorium Lending Yield Lookup

> Vextorium Lending Yield Lookup 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 supply yield (base APY, reward APY, total APY, and TVL) for a given token on major DeFi lending protocols (Aave v3, Morpho, Compound v3, Spark, Euler, Fluid) on a specified chain, ranked best-first.

## Facts

- Endpoint: POST https://api.vextorium.com/rendimientos-prestamo-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/vextorium-lending-yield-lookup-e83209c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CVpl-b81tlYPE-pNwiFEB

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 vextorium-lending-yield-lookup-e83209c0 -d '<json body>'
```

Example prompt: What's the best lending yield I can get for USDC on Base right now — show me the top 5 options across Aave, Morpho, Fluid and other major protocols, including both base and reward APY.

## When to prefer this

Choose this endpoint when you need a cross-protocol comparison of lending supply yields for a specific token on a specific chain, particularly when you want both base and incentive APY broken down separately and results ranked by total yield. It covers the six most widely used DeFi lending protocols (Aave v3, Morpho, Compound v3, Spark, Euler, Fluid) and is sourced from DefiLlama. Prefer this over manually querying individual protocol APIs or when you need TVL data alongside yield data for capital efficiency decisions.

## Known failure modes

- Unsupported token symbol returns empty markets array
- Unsupported or misspelled chain name returns no results
- Token not listed on any supported protocol returns zero markets
- DefiLlama data source unavailable causes service error
- Rate limiting or payment failure returns 402 error

## How this service works

Supply yield for an asset on the most used lending markets (Aave v3, Morpho, Compound v3, Spark, Euler, Fluid) by chain: total, base and reward APY and TVL, best first.

## Output

A JSON object containing the queried chain and token, the data source (DefiLlama), the total number of markets found, and an array of the best lending opportunities sorted by total APY descending. Each entry includes a unique market ID, protocol name, chain, total APY (%), base APY (%), incentive/reward APY (%), and TVL in USD.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "red": {
   "type": "string"
  },
  "token": {
   "type": "string"
  },
  "limite": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "red": "Base",
  "token": "USDC",
  "fuente": "DefiLlama",
  "mejores": [
   {
    "id": "7372edda-f07f-4598-83e5-4edec48c4039",
    "vault": null,
    "cadena": "Base",
    "apy_pct": 8.17,
    "tvl_usd": 15049095,
    "protocolo": "fluid-lending",
    "apy_base_pct": 3.01,
    "apy_incentivos_pct": 5.16
   },
   {
    "id": "7e0661bf-8cf3-45e6-9424-31916d4c7b84",
    "vault": null,
    "cadena": "Base",
    "apy_pct": 3.718,
    "tvl_usd": 20150174,
    "protocolo": "aave-v3",
    "apy_base_pct": 3.718,
    "apy_incentivos_pct": 0
   }
  ],
  "mercados": 2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-lending-yield-lookup-e83209c0/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)