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SYNTHORA ERC-20 Token Holder & Transfer Counters
x402
SYNTHORA ERC-20 Token Holder & Transfer Counters is a paid API for AI agents from blockscout-token-holder-counters.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns holder count and cumulative transfer count for any ERC-20 or ERC-721 token contract address, sourced from public Blockscout APIs.
Price / call$0.001
Success—
StatusUnknown
How this service works
Returns holder count and cumulative transfer count for any ERC-20/ERC-721 token via public Blockscout, plus circulating market cap, total supply and exchange rate on the token detail path. Feeds autonomous token-screening agents and agent-to-agent due-diligence flows that gauge holder distribution, concentration risk and token adoption before trading. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
A JSON object containing the token's total holder count (number of unique addresses holding the token) and cumulative transfer count (total number of on-chain transfer events), plus optionally circulating market cap, total supply, and exchange rate when queried via the token detail path.
Example use cases
Token concentration risk screening
“Before we add this new DeFi token at contract 0x6B175474E89094C44Da98b954EedeAC495271d0F to the portfolio, can you pull its holder count and total transfer volume so I can assess how concentrated ownership is?”
Automated pre-trade due diligence
“Run a quick due diligence check on the token at 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 — I need its holder count, transfer count, and circulating market cap to decide if it's liquid enough to trade.”
Token adoption growth monitoring
“I'm tracking user adoption for the token at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 — can you fetch the current holder count and cumulative transfers so I can compare it against last week's numbers?”
Technical details
Endpoint
POSThttps://blockscout-token-holder-counters.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need fast, on-chain holder and transfer count data for any ERC-20 or ERC-721 token without running your own Blockscout node. It is ideal for autonomous agent workflows performing token screening, concentration risk assessment, or adoption analysis before a trade or investment decision. Prefer it over generalized blockchain explorers when you need a structured JSON response suitable for agent-to-agent due-diligence pipelines.
Side effects
- Invalid or non-existent contract address returns an error or empty result
- Token not indexed by Blockscout returns no data
- Rate limiting or Blockscout API downtime causes lookup failure
- Non-ERC-20/ERC-721 contract addresses may return unexpected results
- Network mismatch (querying wrong chain for contract) returns null or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keys | string | keys |
| caller | string | caller |
| payload | string | payload |
| provides | string | provides |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "blockscout-token-holder-counters",
"result": {
"transfers_count": "336385388",
"token_holders_count": "8204366"
},
"provenance": {
"url": "https://eth.blockscout.com/api/v2/tokens/0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48/counters",
"source": "ERC-20 Token Holder & Transfer Counters"
}
}
}Tags
x402
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