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Ethereum ERC-20 Total Supply
x402
Ethereum ERC-20 Total Supply is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).
Returns the total supply (uint256) of a given ERC-20 token contract on Ethereum mainnet via the totalSupply() call.
Price / call$0.003
Success—
StatusUnknown
How this service works
ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.
Output
Returns a JSON object with: `ok` (boolean success flag), `result` (the ERC-20 totalSupply as a decimal uint256 string), `chain` (chain identifier), `service` (endpoint identifier), and `method` (HTTP method used). On failure, includes an `error` field describing the issue.
Example use cases
Check USDC total supply on Ethereum
“Can you look up the current total supply of USDC on Ethereum mainnet? The contract address is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48.”
Monitor token inflation for DeFi protocol
“I need to track the total supply of the governance token at 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 on Ethereum — what is it right now?”
Verify token supply before investment
“Before I invest, can you tell me the total supply of the token at Ethereum contract 0x6B175474E89094C44Da98b954EedeAC495271d0F so I can assess its market cap?”
Technical details
Endpoint
GEThttps://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_erc20_totalsupply?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to read the on-chain ERC-20 totalSupply for a specific token contract on Ethereum mainnet. Prefer this over general-purpose blockchain explorers when you need a lightweight, paid, agent-callable API that returns raw uint256 supply data. It is ideal for DeFi analytics, token monitoring, and market cap calculations where only a contract address is needed.
Side effects
- Invalid or malformed token address (not matching 0x + 40 hex pattern) returns an error response with ok: false
- Contract address is not an ERC-20 token (no totalSupply function) results in a revert or error
- Network timeout or RPC node unavailability may cause a failed response
- Calling with an EOA (externally owned account) address instead of a contract address returns an error
- Missing or malformed query parameter returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"chain": "ethereum",
"method": "totalSupply",
"result": "88302633055702652",
"service": "x402_eth_reads_v1.eth_mainnet_erc20_totalsupply"
}
}Tags
x402
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