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ERC-20 Token Total Supply Lookup (x402)
x402
ERC-20 Token Total Supply Lookup (x402) is a paid API for AI agents from x402-stock-indicators.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-11).
Returns the raw total supply of any ERC-20 token on Ethereum given its contract address, paid per-call via USDC over the x402 protocol.
Price / call$0.005
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: the blockchain chain identifier (e.g. 'eth'), the token's contract address, the raw total supply expressed in the token's smallest unit (e.g. wei for 18-decimal tokens), and a note reminding the caller to divide by 10**decimals for a human-readable amount since decimals are not included in this response.
Example use cases
DeFi dashboard token supply check
“Pull the raw total supply for the USDC token at contract 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum — I need it in the smallest unit so I can do my own decimal conversion.”
Automated supply monitoring bot
“Check the on-chain total supply of the token at 0x6B175474E89094C44Da98b954EedeAC495271d0F right now — I'm building an alert if supply changes by more than 1% week over week.”
Token research due diligence
“I'm researching this DeFi project — can you get me the current total supply from the Ethereum contract at 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 so I can cross-check it against their whitepaper?”
Technical details
Endpoint
GEThttps://x402-stock-indicators.vercel.app/token-supply/%7Bcontract_address%7DWhen to prefer
Choose this endpoint when you need on-chain ERC-20 total supply data with no API key or subscription setup, and you can pay $0.005 USDC per call via x402 (Base or Solana). Ideal for agents that need occasional or sporadic supply lookups without committing to a data provider contract. Prefer alternatives like Alchemy, Moralis, or The Graph if you need decimals in the same response, multi-chain support beyond Ethereum, or very high call volumes where per-call pricing becomes costly.
Side effects
- Invalid or malformed contract address returns an error or empty result
- Contract address exists but is not an ERC-20 token may return unexpected data
- Payment failure via x402 (insufficient USDC balance or unsupported wallet) blocks the request
- Rate limiting or Vercel cold-start latency may cause timeouts
- Token deployed on non-Ethereum chains will not be found (endpoint appears Ethereum-specific)
- Decimals not returned — callers who forget to divide by 10**decimals will misread the supply
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "raw_total_supply is in the token's smallest unit -- this endpoint doesn't return the token's decimals, so divide by 10**decimals yourself for a human-readable amount (most ERC-20s use 18, but not all).",
"chain": "eth",
"token_contract": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"raw_total_supply": "49571331689759662"
}
}Tags
x402
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