# AgentDiet Stablecoin Yields Lookup

> AgentDiet Stablecoin Yields Lookup is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Fetches current stablecoin yield rates and ROI data, optionally filtered by asset, via a pay-per-call x402 API settling in USDC on Base.

## Facts

- Endpoint: GET https://rag-diet.agentdiet.dev/v1/stablecoin-yields?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-stablecoin-yields-lookup-6389d5e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Eey61nIrzA_pbOZUmwwj_

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 agentdiet-stablecoin-yields-lookup-6389d5e2
```

Example prompt: What are the current stablecoin yield rates? I'm especially interested in USDC — can you pull the latest ROI data for me?

## When to prefer this

Choose this endpoint when an AI agent needs programmatic, pay-per-call access to current stablecoin yield data with provable ROI metadata, particularly in onchain or DeFi-native workflows that already support x402 micropayment settlement in USDC on Base. It is well-suited for autonomous treasury management agents, yield optimization bots, or financial dashboards that need fresh yield rates without a subscription model.

## Known failure modes

- Invalid or unsupported asset query param returns empty or error data
- Payment not settled in USDC on Base causes 402 rejection before data is returned
- Malformed request (missing required 'input.type' or 'input.method') returns schema validation error
- Service downtime or node unavailability returns non-200 status
- Rate limiting or quota exhaustion may block repeated rapid calls

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://rag-diet.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a 'data' field containing stablecoin yield information, a 'status' field ('ok'), and a 'roi_proof' object including a compression_ratio_pct (e.g. 91.4). The actual yield data is nested under 'data'.

## 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",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "asset": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-stablecoin-yields-lookup-6389d5e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rag-diet.agentdiet.dev](https://www.zero.xyz/host/rag-diet.agentdiet.dev/llms.txt)