# RagRadar Best Yield by Asset

> RagRadar Best Yield by Asset is a paid API for AI agents from backup.ragradar.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-08).

Returns the best on-chain yield opportunities for a specified crypto asset across Base, Arbitrum, and Solana

## Facts

- Endpoint: GET https://backup.ragradar.space/api/yields/best/%7Basset%7D
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-08
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ragradar-best-yield-by-asset-09793b5b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qNAA835b4SJ22ZJmrXorU

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 ragradar-best-yield-by-asset-09793b5b
```

Example prompt: What's the best on-chain yield available for USDC right now — check across Base, Arbitrum, and Solana and tell me which protocol is offering the highest APY.

## When to prefer this

Use this endpoint when an agent needs to quickly identify the single best yield rate for a specific crypto asset across multiple chains without manually querying each protocol. Ideal for DeFi portfolio optimization agents, yield routing bots, or user-facing financial assistants comparing lending/staking options on Base, Arbitrum, or Solana.

## Known failure modes

- Asset not supported — returns error or empty result for unrecognized token symbols
- No yield data available for asset on any supported chain
- Rate limiting or x402 payment failure if USDC micropayment is not properly handled
- Stale data if on-chain indexing is lagging behind current protocol state
- Malformed asset path parameter causes 400 or 404 error

## How this service works

On-chain intelligence for AI agents. 73+ endpoints across Base, Arbitrum, Solana. x402 micropayments.

## Output

Returns the top yield opportunity for the specified asset, including the protocol name, chain, current APY or yield rate, and relevant pool or market details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": "ok"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ragradar-best-yield-by-asset-09793b5b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from backup.ragradar.space](https://www.zero.xyz/host/backup.ragradar.space/llms.txt)