Call any read-only contract function without a transaction or ABI file
Call any read-only contract function without a transaction or ABI file: give the signature with return types, e.g. balanceOf(address)(uint256) or getReserves()(uint112,uint112,uint32), plus arguments; returns decoded values.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
171 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://bess-x402.onrender.com/v1/evm/read
| Category | Everything else |
|---|---|
| Provider host | bess-x402.onrender.com |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.003 | 171 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"address": "0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc",
"chain": "ethereum",
"signature": "getReserves()(uint112,uint112,uint32)"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "Contract address",
"type": "string"
},
"args": {
"description": "Comma-separated arguments (arrays as JSON)",
"type": "string"
},
"block": {
"description": "Block number or latest",
"type": "string"
},
"chain": {
"description": "ethereum, base, arbitrum, optimism or polygon",
"type": "string"
},
"signature": {
"description": "name(argTypes)(returnTypes)",
"type": "string"
}
},
"required": [
"address",
"signature"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}