EVM network info - chain ID, block height, gas price, chain head age, and chain characteri
EVM network info - chain ID, block height, gas price, chain head age, and chain characteristics in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice + latest block header)
1000 (raw units)
price
468
calls / 30d
438
unique payers
2026-09-18
updated
Provider
api.onesource.io · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"maxTimeoutSeconds": 3600
},
{
"scheme": "batch-settlement",
"network": "eip155:8453",
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"maxTimeoutSeconds": 3600
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"network": "ethereum"
},
"type": "http"
},
"output": {
"example": {
"data": {
"block_number": "0x133da1e",
"chain": {
"avg_block_time_ms": 12000,
"chain_id": 1,
"ens": true,
"finality": "beacon",
"indexed": true,
"layer": 1,
"mempool": true,
"native_currency": "ETH",
"stack": "ethereum"
},
"chain_id": "0x1",
"gas_price": "0x4a817c800",
"head_age_seconds": 9,
"head_timestamp": 1754240345,
"net_version": "1",
"network": "ethereum",
"stale": false,
"stale_after_seconds": 1200
},
"meta": {
"cost_usdc": "0.001",
"endpoint": "/api/chain/network-info",
"payment_chain": "base",
"payment_token": "USDC",
"request_id": "00000000abcdef01"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"network": {
"default": "ethereum",
"enum": [
"ethereum",
"sepolia",
"robinhood"
],
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"description": "Endpoint-specific response payload",
"properties": {
"block_number": {
"type": "string"
},
"chain": {
"properties": {
"avg_block_time_ms": {
"type": "integer"
},
"chain_id": {
"type": "integer"
},
"ens": {
"type": "boolean"
},
"finality": {
"type": "string"
},
"indexed": {
"type": "boolean"
},
"layer": {
"type": "integer"
},
"mempool": {
"type": "boolean"
},
"native_currency": {
"type": "string"
},
"stack": {
"type": "string"
}
},
"type": "object"
},
"chain_id": {
"type": "string"
},
"gas_price": {
"type": "string"
},
"head_age_seconds": {
"type": "integer"
},
"head_timestamp": {
"type": "integer"
},
"net_version": {
"type": "string"
},
"network": {
"type": "string"
},
"stale": {
"type": "boolean"
},
"stale_after_seconds": {
"type": "integer"
}
},
"type": "object"
},
"error": {
"properties": {
"code": {
"type": "integer"
},
"message": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"meta": {
"properties": {
"cost_usdc": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"payment_chain": {
"type": "string"
},
"payment_token": {
"type": "string"
},
"request_id": {
"type": "string"
}
},
"required": [
"endpoint",
"request_id"
],
"type": "object"
}
},
"required": [
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.onesource.io/api/chain/network-info" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.onesource.io/api/chain/network-info");
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://api.onesource.io/api/chain/network-info")
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/51.json, and this resource appears in /discovery/resources and /discovery/search.