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x402-data-api Stablecoins by Circulating Supply
x402
x402-data-api Stablecoins by Circulating Supply is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Returns top stablecoins ranked by circulating supply from DefiLlama, including name, symbol, price, peg type, and circulating USD value.
Price / call$0.003
Success—
StatusUnknown
How this service works
Top stablecoins by circulating supply (DefiLlama): name, symbol, price, peg type, circulating USD. No params. Use when an agent needs stablecoin supply and depeg checks.
Output
A JSON array of top stablecoins, each with symbol, current price (in USD), and circulating supply in USD. Optionally limited by a `limit` query parameter. Data is sourced from DefiLlama and reflects near-real-time supply figures.
Example use cases
Stablecoin depeg alert monitoring
“Check all major stablecoins right now and tell me if any of them have depegged — specifically flag anything trading below $0.99 or above $1.01.”
DeFi portfolio stablecoin exposure report
“Give me a breakdown of the top stablecoins by circulating supply so I can understand which ones dominate the market and how much risk is concentrated in each.”
Comparing USDT vs USDC market share
“What's the current circulating supply of USDT versus USDC, and which one is bigger right now?”
Technical details
Endpoint
GEThttps://x402-data-api.sigrunner.workers.dev/crypto/stablecoins?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, no-auth, pay-per-call snapshot of the stablecoin market ranked by circulating supply — especially for depeg checks or market share comparisons. Prefer this over building a DefiLlama integration yourself when low cost and simplicity matter. Best suited for agents that need occasional stablecoin market data without a subscription.
Side effects
- DefiLlama upstream unavailable — may return 502 or empty data
- Payment not processed — returns 402 if USDC payment fails
- Invalid `limit` parameter type — may be ignored or cause 400 error
- Rate limiting or worker timeout on Cloudflare edge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"stablecoins": [
{
"price": 0.9994,
"symbol": "USDT",
"circulating_usd": 183456438967
}
]
}
}Tags
x402
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