Multi-chain JSON-RPC passthrough fronted by BlockRun, powered by Tatum's gateway
Multi-chain JSON-RPC passthrough fronted by BlockRun, powered by Tatum's gateway across 40 chains (Ethereum, Base, Solana, Polygon, BSC, Arbitrum, Optimism, Avalanche, Bitcoin, Sui, and more). One endpoint, every chain, pay-per-call in USDC, no API key. $0.002 per call (or per element of a JSON-RPC batch). Network: Ethereum.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
202 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
POST https://blockrun.ai/api/v1/rpc/ethereum
| Category | Market data |
|---|---|
| Provider host | blockrun.ai |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.003 | 202 ms |
Example input (from the provider)
{
"bodyFields": {
"id": {
"description": "JSON-RPC id",
"type": [
"string",
"number"
]
},
"jsonrpc": {
"description": "\"2.0\"",
"type": "string"
},
"method": {
"description": "Chain RPC method, e.g. eth_blockNumber, eth_call, eth_getBalance (EVM) or getSlot, getAccountInfo (Solana).",
"type": "string"
},
"params": {
"description": "Method-specific params.",
"type": "array"
}
},
"discoverable": true,
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"id": {
"description": "JSON-RPC id",
"type": [
"string",
"number"
]
},
"jsonrpc": {
"description": "\"2.0\"",
"type": "string"
},
"method": {
"description": "Chain RPC method, e.g. eth_blockNumber, eth_call, eth_getBalance (EVM) or getSlot, getAccountInfo (Solana).",
"type": "string"
},
"params": {
"description": "Method-specific params.",
"type": "array"
}
},
"required": [
"jsonrpc",
"id",
"method"
],
"type": "object"
}
},
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"id": {
"type": [
"string",
"number"
]
},
"jsonrpc": {
"type": "string"
},
"result": {
"type": "object"
}
},
"type": "object"
}
},
"type": "object"
}
},
"type": "object"
}