Query a contract's event logs over a bounded block range via `eth_getLogs`: filter by `add
Query a contract's event logs over a bounded block range via `eth_getLogs`: filter by `address` (required) and optional `topics`, get back raw logs (topics, data, block, tx hash, log index) with ERC-20/721 Transfer logs auto-decoded to `{from, to, value}`. Block span is capped (large windows are clamped); results are capped by `limit`. Reads live on-chain data with automatic endpoint fallback.
6000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-13
updated
Provider
chain.openverbs.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "6000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"address": {
"description": "Contract address to query logs for (required — bounds the query).",
"pattern": "^0x[0-9a-fA-F]{40}$",
"type": "string"
},
"chain": {
"description": "EVM chain to query. One of: ethereum, base, arbitrum, optimism, polygon. Default \"ethereum\".",
"enum": [
"ethereum",
"base",
"arbitrum",
"optimism",
"polygon"
],
"type": "string"
},
"fromBlock": {
"description": "Start block (decimal or 0x-hex; not a tag).",
"type": [
"string",
"integer"
]
},
"limit": {
"description": "Max logs to return (default 1000).",
"maximum": 5000,
"minimum": 1,
"type": "integer"
},
"toBlock": {
"description": "End block (decimal or 0x-hex) or \"latest\" (default). Max 5000-block span.",
"type": [
"string",
"integer"
]
},
"topics": {
"description": "Optional topic filters (topic0 = event signature hash). Up to 4; null matches any.",
"items": {
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": [
"string",
"null"
]
},
"maxItems": 4,
"type": "array"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://chain.openverbs.com/v1/logs" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://chain.openverbs.com/v1/logs");
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://chain.openverbs.com/v1/logs")
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/12602.json, and this resource appears in /discovery/resources and /discovery/search.