Safelisted read-only JSON-RPC proxy across major EVM chains (base, ethereum, polygon, arbi
Safelisted read-only JSON-RPC proxy across major EVM chains (base, ethereum, polygon, arbitrum, optimism) — eth_call, eth_getBalance, eth_getTransactionReceipt, eth_getBlockByNumber, and more
3000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-14
updated
Provider
x402tap.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "3000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:137",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "3000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:42161",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "3000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9fqXniDAn8hNMYC5C9waGv5u126bkwjU6qGgAoQeoWyo",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "3000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"chain": "base",
"method": "eth_getBalance",
"params": "[\"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045\",\"latest\"]"
},
"type": "http"
},
"output": {
"example": {
"chain": "Base",
"method": "eth_blockNumber",
"result": "0x1234567"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "Chain to query: base, ethereum, polygon, arbitrum, optimism (default base)",
"type": "string"
},
"method": {
"description": "Read-only JSON-RPC method name, e.g. eth_getBalance, eth_call, eth_blockNumber",
"type": "string"
},
"params": {
"description": "JSON-encoded array of RPC params, e.g. [\"0xabc...\",\"latest\"] (default [])",
"type": "string"
}
},
"required": [
"method"
],
"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"
}
},
"offer-receipt": {
"info": {
"offers": [
{
"acceptIndex": 0,
"format": "eip712",
"payload": {
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/rpc",
"scheme": "exact",
"validUntil": 1789415789,
"version": 1
},
"signature": "0xab5d190878f9712827e0fddaee6684bd57c497bd729a0a90ccf40765ecfca06e65642395912e63ace9f396592b06ab8d903d2bc3c7c8043d73514065e70d521e1c"
},
{
"acceptIndex": 1,
"format": "eip712",
"payload": {
"amount": "3000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"network": "eip155:137",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/rpc",
"scheme": "exact",
"validUntil": 1789415789,
"version": 1
},
"signature": "0xc353d8c5b9013c963096a6c11bef2548a2dadde67d136cb6afbb04812deaf23b1517b152e6c52dc72f398736e03f392dbf095dd249db564d710f7bb987aafe071b"
},
{
"acceptIndex": 2,
"format": "eip712",
"payload": {
"amount": "3000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"network": "eip155:42161",
"payTo": "0xB810B599bc730Aa85800BABe7f5d160524322C86",
"resourceUrl": "https://x402tap.com/api/rpc",
"scheme": "exact",
"validUntil": 1789415789,
"version": 1
},
"signature": "0xa928033958562726720ad8f96f04b222c35e0e7575b780fa833b2c472922c6600a66001ad55cd1da7505d6b09dcd938658ede4ac8edb340a820c1cd8017abecb1c"
},
{
"acceptIndex": 3,
"format": "eip712",
"payload": {
"amount": "3000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9fqXniDAn8hNMYC5C9waGv5u126bkwjU6qGgAoQeoWyo",
"resourceUrl": "https://x402tap.com/api/rpc",
"scheme": "exact",
"validUntil": 1789415789,
"version": 1
},
"signature": "0x8c6530e359e0a248e489061cfb6a7e819fc946c59657dfc604c029473c994e80050c2eaee13c8508a9610ed94630cafcc4539936c41296622e95f197226abfab1b"
}
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"offers": {
"items": {
"properties": {
"acceptIndex": {
"type": "integer"
},
"format": {
"type": "string"
},
"payload": {
"properties": {
"amount": {
"type": "string"
},
"asset": {
"type": "string"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"resourceUrl": {
"type": "string"
},
"scheme": {
"type": "string"
},
"validUntil": {
"type": "integer"
},
"version": {
"type": "integer"
}
},
"required": [
"version",
"resourceUrl",
"scheme",
"network",
"asset",
"payTo",
"amount"
],
"type": "object"
},
"signature": {
"type": "string"
}
},
"required": [
"format",
"signature"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"offers"
],
"type": "object"
}
}
}Use it
curl
curl "https://x402tap.com/api/rpc" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402tap.com/api/rpc");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402tap.com/api/rpc")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/1137.json, and this resource appears in /discovery/resources and /discovery/search.