# SperaxOS Stablecoins Data API

> SperaxOS Stablecoins Data API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Returns real-time DeFi intelligence data on stablecoins, payable per-request via x402 USDC micropayments on Base

## Facts

- Endpoint: GET https://chat.sperax.io/api/x402/v1/data/stablecoins?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-stablecoins-data-api-a5f07365
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X7hxo1DP1Qc5hV_lCgSof

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 speraxos-stablecoins-data-api-a5f07365
```

Example prompt: Pull up the latest stablecoin data from SperaxOS — I want to see the properties and metrics for all available stablecoins so I can compare yields and liquidity.

## When to prefer this

Choose this endpoint when you need structured, AI-curated stablecoin data from the DeFi ecosystem without setting up an API key — ideal for agents that can pay per-request with USDC on Base via x402. Prefer this over generic crypto data APIs when you specifically need stablecoin intelligence with DeFi-native metrics.

## Known failure modes

- 402 Payment Required if x402 USDC payment on Base is not included or insufficient
- Invalid or malformed properties filter returns empty or error response
- Network or RPC issues on Base chain delay response
- Stablecoin data may be temporarily stale if on-chain indexing lags

## How this service works

AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.

## Output

A JSON response containing a list of stablecoins with their DeFi-relevant properties and metrics such as yield, liquidity, collateral type, and on-chain data, sourced from Sperax's AI-powered intelligence layer.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-stablecoins-data-api-a5f07365/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)