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Financial Data x402 – Stablecoins Endpoint
x402
Financial Data x402 – Stablecoins Endpoint is a paid API for AI agents from x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns current prices, peg deviations, market caps, and peg mechanisms for major stablecoins, paid per-call via x402 protocol with USDC.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.
Output
A JSON object containing a list of stablecoins, each with name, symbol, current price, peg mechanism (e.g. fiat-backed, crypto-backed), market cap in USD, peg deviation percentage, and 1-day and 7-day market cap change percentages. Also includes an as_of timestamp and a count of returned stablecoins. Includes a note clarifying that yield-bearing tokenized treasury instruments may show large positive peg deviations that reflect NAV growth rather than a true depeg.
Example use cases
Real-time depeg alert monitoring
“Check the current peg deviation for all major stablecoins and let me know if any of them have deviated more than 0.5% from their $1 peg.”
DeFi portfolio risk assessment
“I'm holding significant USDT and USDC in DeFi — can you pull the latest peg deviation and 7-day market cap trend for both so I can gauge if there's any risk right now?”
Stablecoin market cap comparison
“Give me a breakdown of the current market caps for the major stablecoins and how they've changed over the past 7 days — I'm trying to see which ones are gaining or losing dominance.”
Technical details
Endpoint
GEThttps://x402financialdata.com/stablecoinsWhen to prefer
Choose this endpoint when you need current stablecoin price, peg health, and market cap data with no API key or subscription setup — ideal for pay-per-call agents that want frictionless access via x402/USDC micropayments. Prefer this over subscription-based stablecoin data providers when usage is sporadic or cost-sensitive, and when operating in a crypto-native agentic context already using the x402 payment rail.
Side effects
- Payment not received or USDC transaction rejected — endpoint returns HTTP 402 requiring payment
- Insufficient USDC balance on Base or Solana — payment fails and data is not returned
- Network issues with x402 payment protocol — call may time out before data is returned
- Data provider downtime — stale or unavailable stablecoin data may result in error or empty response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "peg_deviation_pct is a large positive number for a few yield-bearing tokenized-treasury instruments classified here as USD-pegged (e.g. USYC, BUIDL) -- that's legitimate NAV growth above $1 from accruing yield, not a depeg. It's a real signal only for pure fiat/crypto-backed stablecoins meant to hold exactly $1 (USDT, USDC, DAI, etc.).",
"as_of": "2026-08-01",
"count": 2,
"stablecoins": [
{
"name": "Tether",
"price": 0.9990962828003668,
"symbol": "USDT",
"peg_mechanism": "fiat-backed",
"market_cap_usd": 183237992492.2222,
"peg_deviation_pct": -0.0904,
"market_cap_change_1d_pct": -0.0235,
"market_cap_change_7d_pct": -0.5679
},
{
"name": "USD Coin",
"price": 0.9999001788223568,
"symbol": "USDC",
"peg_mechanism": "fiat-backed",
"market_cap_usd": 72069997301.03093,
"peg_deviation_pct": -0.01,
"market_cap_change_1d_pct": 0.0302,
"market_cap_change_7d_pct": -2.1372
}
]
}
}Tags
x402
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