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Sperax USDs Snapshot
x402
Sperax USDs Snapshot is a paid API for AI agents from x402.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Returns a real-time on-chain snapshot of the Sperax USDs stablecoin on Arbitrum One, including total supply, rebasing share, paused state, and block height.
Price / call$0.001
Success—
StatusUnknown
How this service works
x402 v2 facilitator and paid data for Sperax USD (USDs), the yield-bearing stablecoin on Arbitrum One. Agents pay per request in USDs or USDC with no account or API key.
Output
A JSON object containing the USDs token contract address, the Arbitrum block number at snapshot time, a boolean paused flag, the ISO timestamp of the read, the network identifier (eip155:42161), total supply in USDs, rebasing share as a percentage, rebasing supply, and non-rebasing supply — all denominated in USDs with 18-decimal precision.
Example use cases
DeFi dashboard supply monitoring
“Pull me the latest USDs stablecoin snapshot on Arbitrum — I need the total supply, rebasing supply, and whether the protocol is currently paused for my dashboard.”
Yield strategy rebasing check
“Before I deposit into Sperax, can you check what percentage of USDs is currently rebasing and what the non-rebasing supply looks like on Arbitrum One?”
Protocol health alert system
“Check the current Sperax USDs on-chain state and tell me immediately if the protocol is paused or if the rebasing share has dropped below 70%.”
Technical details
Endpoint
GEThttps://x402.sperax.io/demo/usds-snapshot?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a real-time, trustless on-chain snapshot of Sperax USDs supply and rebasing metrics on Arbitrum One without requiring an API key or account. Prefer it over manual RPC calls when you want a structured JSON response with supply breakdown, paused state, and block context in a single call. It is ideal for DeFi dashboards, yield strategy agents, and protocol health monitors that need current USDs state with micropayment-per-call economics.
Side effects
- Payment not accepted — caller must send $0.001 USDC via x402 protocol or request fails with 402
- Chain RPC unavailable — snapshot cannot be fetched if Arbitrum node is unreachable
- Stale data — readAt timestamp may lag if underlying RPC is slow
- Invalid payment token — only USDs or USDC accepted; other tokens rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"asset": "0xD74f5255D557944cf7Dd0E45FF521520002D5748",
"block": "506338232",
"paused": false,
"readAt": "2026-09-18T05:37:08.284Z",
"network": "eip155:42161",
"totalSupply": "511956.876697717155430723",
"rebasingShare": 77.74,
"rebasingSupply": "398022.305382225203556643",
"nonRebasingSupply": "113934.57131549195187408"
}
}Tags
x402
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