RPC API for Ethereum mainnet and Sepolia, with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key.
Pay from $0.001 to $0.005 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
UPTIME 24H 100% │ 7D 100% │ 30D 100%
ASSESSMENT
updated 1h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 265ms
- avg response
- 189ms
- total checks
- 70
compliance A (11/11)
11 of 11 x402 conformance checks pass. Full checklist below.
price $0.001 to $0.005 (p29 in Blockchain)
- price (min)
- $0.001
- price (max)
- $0.005
- category percentile (min)
- p29 in Blockchain
- category percentile (max)
- p41 in Blockchain
- endpoints / prices
- 10 / 4
- model
- tiered
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
traction $97.29 30d · 1256 buyers
- volume 30d
- $97.29
- buyers 30d
- 1256
- settlements 30d
- 28,722
- last settlement
- 2026-07-21
- top buyer share
- 57% of 30d volume
- trend 7d vs 30d
- 2.23x the 30d daily rate
- networks
- eip155:8453
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedProvides blockchain data access and RPC functionality for Ethereum and compatible networks
- category
- blockchain-rpc
- in
- path params and body
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /api/chain/block-number | $0.001 | Base | USDC | |
| POST | /api/chain/call | $0.005 | Base | USDC | |
| GET | /api/chain/code/:address | $0.003 | Base | USDC | |
| GET | /api/chain/contract/:address | $0.005 | Base | USDC | |
| GET | /api/chain/ens/:input | $0.005 | Base | USDC | |
| GET | /api/chain/erc20-transfers | $0.005 | Base | USDC | |
| POST | /api/chain/estimate-gas | $0.004 | Base | USDC | |
| GET | /api/chain/network-info | $0.001 | Base | USDC | |
| GET | /api/chain/nonce/:address | $0.003 | Base | USDC | |
| GET | /api/chain/receipt/:hash | $0.005 | Base | USDC |
10 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/chain/block-number returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://api.onesource.io/api/chain/block-number'
// 402 response (captured by monitor) · 10 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "1000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/block-number",
"mimeType": "application/json",
"description": "Latest Ethereum block height - current chain tip via eth_blockNumber"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"network": "ethereum",
"block_number": "0x133da1e"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"properties": {
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "3000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/code/:address",
"mimeType": "application/json",
"description": "Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"code": "0x6080604052600436106101...",
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"is_contract": true,
"bytecode_size": 10234
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/api/chain/code/:address"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/contract/:address",
"mimeType": "application/json",
"description": "Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"name": "Tether USD",
"symbol": "USDT",
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"decimals": 6,
"interfaces": [
"ERC20"
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/api/chain/contract/:address"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/ens/:input",
"mimeType": "application/json",
"description": "ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"input": "vitalik.eth",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"input": "vitalik.eth",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"mode": "forward",
"input": "vitalik.eth",
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"input"
],
"properties": {
"input": {
"oneOf": [
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
{
"type": "string",
"pattern": ".+\\.eth$"
}
]
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"input"
],
"properties": {
"input": {
"oneOf": [
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
{
"type": "string",
"pattern": ".+\\.eth$"
}
]
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/api/chain/ens/:input"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/erc20-transfers",
"mimeType": "application/json",
"description": "ERC20 Transfer logs via eth_getLogs - decoded sender, recipient, and amount for a token or wallet"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"wallet": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"wallet": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"count": 1,
"transfers": [
{
"to": "0x6b175474e89094c44da98b954eedeac495271d0f",
"from": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"value": "1000000",
"tx_hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
"block_number": "0x133da1e"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"properties": {
"token": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"wallet": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
},
"to_block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
},
"from_block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"token": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"wallet": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
},
"to_block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
},
"from_block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "1000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/network-info",
"mimeType": "application/json",
"description": "Ethereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"network": "ethereum",
"chain_id": "0x1",
"gas_price": "0x4a817c800",
"block_number": "0x133da1e"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"properties": {
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "3000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/nonce/:address",
"mimeType": "application/json",
"description": "Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"block": "pending",
"nonce": "0x4d2",
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"address"
],
"properties": {
"block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
},
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"block": {
"oneOf": [
{
"type": "integer",
"minimum": 0
},
{
"enum": [
"latest",
"pending",
"earliest",
"safe",
"finalized"
],
"type": "string"
},
{
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
]
},
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/api/chain/nonce/:address"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/receipt/:hash",
"mimeType": "application/json",
"description": "Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
"network": "ethereum"
},
"type": "http",
"method": "GET",
"queryParams": {
"hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
"network": "ethereum"
}
},
"output": {
"type": "json",
"example": {
"logs": [],
"status": "0x1",
"gas_used": "0x5208",
"block_number": "0x133da1e",
"transaction_hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
"effective_gas_price": "0x3b9aca00"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{64}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{64}$"
},
"network": {
"enum": [
"ethereum",
"sepolia"
],
"type": "string",
"default": "ethereum"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
},
"routeTemplate": "/api/chain/receipt/:hash"
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/call",
"mimeType": "application/json",
"description": "Simulate a read-only Ethereum contract call via eth_call - no transaction sent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"data": "0x0"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"result": "0x000000000000000000000000000000000000000000000000000000000000002a"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"to",
"data"
],
"properties": {
"to": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"data": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
},
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"value": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "4000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "4000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/api/chain/estimate-gas",
"mimeType": "application/json",
"description": "Estimate the gas a transaction will consume via eth_estimateGas before signing it"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"data": "0x0"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"gas_estimate": "0x5208"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"to": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"data": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
},
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"value": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]+$"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "Response payload"
},
"meta": {
"type": "object",
"properties": {
"network": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"cost_usdc": {
"type": "string"
}
}
},
"error": {
"type": [
"object",
"null"
]
}
}
}
}
}
}
}
}
},
"x402Version": 2
}
] UPTIME
RESPONSE TIME
90d UPTIME 100%
UPTIME 90D 100%
AVG RESP 184ms
TOTAL CHECKS 74
RECENT CHECKS
TIME STATUS RESP
● OK 103ms
● OK 106ms
● OK 111ms
● OK 106ms
● OK 105ms
● OK 128ms
● OK 158ms
● OK 104ms
● OK 155ms
● OK 112ms
● OK 109ms
● OK 153ms
● OK 113ms
● OK 194ms
● OK 251ms
● OK 174ms
● OK 207ms
● OK 166ms
OVER TIME
All charts share the 90d window selected here. Every series is also served as JSON at /api/v1/services/onesource/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted).
PRICE (captured 402, USD)
Median across 10 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
11/11 checks pass · grade A- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/onesource?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/onesource.svg" alt="OneSource listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/onesource?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/onesource?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/onesource.svg?data=uptime" alt="OneSource uptime on x402-list" height="28"> </a>