# x402 Data Hub – Stablecoin Yield Endpoint

> x402 Data Hub – Stablecoin Yield Endpoint is a paid API for AI agents from data-hub-x402.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-16).

Returns current stablecoin yield rates and APY data across DeFi protocols, paid per-call via x402 micropayment

## Facts

- Endpoint: POST https://data-hub-x402.vercel.app/api/yield/stablecoin
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-data-hub-stablecoin-yield-endpoint-febca71a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o3rASbE65hOBJxq4SsfFu

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 x402-data-hub-stablecoin-yield-endpoint-febca71a -d '<json body>'
```

Example prompt: Pull the latest stablecoin yield rates from the x402 Data Hub — I want to see which protocol is offering the highest APY on USDC and USDT right now across DeFi.

## When to prefer this

Choose this endpoint when you need real-time or near-real-time stablecoin yield/APY data across multiple DeFi protocols in a single paid call, and you are already operating in an x402 micropayment context. Suitable for treasury management agents, yield-optimization bots, and DeFi research workflows that need current rate data without maintaining their own protocol integrations.

## Known failure modes

- Payment not included or invalid x402 header — returns 402 Payment Required
- Unsupported stablecoin or protocol filter — returns empty results or 400 error
- Upstream DeFi data source unavailable — may return stale or partial data
- Rate limit exceeded — returns 429 Too Many Requests
- Vercel cold start latency on first call — slight delay on initial request

## How this service works

16 paid endpoints - Crypto, Exchange, Yield, Governance, Sentiment

## Output

Returns a structured payload containing stablecoin yield data including protocol names, APY/APR figures, supported assets (USDC, USDT, DAI, etc.), chain, and TVL figures for each yield opportunity, priced at $0.08 USDC per call via x402.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-data-hub-stablecoin-yield-endpoint-febca71a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data-hub-x402.vercel.app](https://www.zero.xyz/host/data-hub-x402.vercel.app/llms.txt)