# DeFi Yield Pool Screener

> DeFi Yield Pool Screener is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Filters and ranks 15,000+ DeFi liquidity pools by APY or TVL across chains, protocols, tokens, and stablecoin status

## Facts

- Endpoint: POST https://twin.unykorn.org/defi/yields?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/defi-yield-pool-screener-a29aec8c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f5yx9cLjm5lVIkMQE4AoA

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 defi-yield-pool-screener-a29aec8c -d '<json body>'
```

Example prompt: Show me the top 20 stablecoin-only DeFi pools on Base sorted by APY with at least $1M TVL — I want to find the best safe yield opportunities right now.

## When to prefer this

Choose this endpoint when you need to discover and compare DeFi yield opportunities across a broad universe of 15,000+ pools with flexible filtering by chain, protocol, token, TVL floor, and stablecoin status — ideal for yield optimization agents, portfolio advisors, or DeFi dashboards that need fresh, filterable pool data without building their own aggregation layer.

## Known failure modes

- Invalid chain or project name returns empty results or an error
- Limit exceeding 100 is rejected
- min_tvl_usd values above 1 trillion are rejected
- Payment failure via x402 results in 402 response before data is returned
- Very restrictive filter combinations (e.g. obscure chain + stablecoin-only + high TVL) may return zero pools

## How this service works

Best DeFi yields: filter 15,000+ pools by chain, protocol, token, stablecoin-only, TVL — Genesis402 / UnyKorn Operator Network

## Output

Returns a ranked list of DeFi liquidity pools matching the specified filters, including pool name, APY, TVL in USD, chain, protocol, and token composition — up to 100 results sorted by APY or TVL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "sort": {
     "enum": [
      "apy",
      "tvl"
     ],
     "type": "string",
     "description": "optional: apy (default) | tvl"
    },
    "chain": {
     "type": "string",
     "description": "optional: e.g. Base"
    },
    "limit": {
     "type": "integer",
     "maximum": 100,
     "minimum": 1,
     "description": "optional: max rows (default 20, max 100)"
    },
    "token": {
     "type": "string",
     "description": "optional: symbol that must be in the pool, e.g. USDC"
    },
    "project": {
     "type": "string",
     "description": "optional: e.g. aave-v3"
    },
    "min_tvl_usd": {
     "type": "number",
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "optional, default 1000000"
    },
    "stablecoin_only": {
     "type": "boolean",
     "description": "optional"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "defi-yields",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.01,
   "receipt_id": "g402-<16hex>"
  },
  "sources": [
   {
    "ok": true,
    "name": "<source>"
   }
  ],
  "limitations": "<text>",
  "generated_at": "<iso time>",
  "evidence_hash": "sha256:<64hex>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/defi-yield-pool-screener-a29aec8c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)