base-events
Smart contract event logs on Base mainnet (Base contract events) via eth_getLogs - filter by contract address and up to 4 topics, up to 2,000 blocks, raw logs with topics, data, block and tx hash.
TradingLiveeip155:8453Exactvia wellknown:x402.agentindex.world
Base rpcEvent logs baseEth_getLogsFilter logsBase mainnet
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far.
$1.51
Verified settled volume
563 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69dThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.agentindex.world/base/events",
"tags": [
"base rpc",
"event logs base",
"eth_getLogs",
"filter logs",
"base mainnet"
],
"mimeType": "application/json",
"description": "Smart contract event logs on Base mainnet (Base contract events) via eth_getLogs - filter by contract address and up to 4 topics, up to 2,000 blocks, raw logs with topics, data, block and tx hash.",
"serviceName": "base-events"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
],
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"to_block": 52118214,
"from_block": 52118214
},
"type": "http",
"method": "GET",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"logs": [
{
"data": "0x00000000000000000000000000000000000000000000000000000000000003e8",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x0000000000000000000000003cedc3cba49c3809ee46b9bf60da75d6607b45ec",
"0x000000000000000000000000b3f32bdfe8d07825bc0d7387295ab1d7559ba69d"
],
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"log_index": 234,
"block_number": 52118214,
"transaction_hash": "0xc2490a8a0aedd1196617a0e52111f82d6059986db7f1713ab23221c91c42f5c4"
}
],
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
],
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"to_block": 52118214,
"from_block": 52118214
}
}
},
"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",
"title": "EventsInput",
"required": [
"from_block",
"to_block"
],
"properties": {
"topics": {
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"title": "Topics",
"maxItems": 4
},
"address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Address",
"default": null
},
"to_block": {
"type": "integer",
"title": "To Block",
"minimum": 0
},
"from_block": {
"type": "integer",
"title": "From Block",
"minimum": 0
}
}
},
"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",
"title": "EventsOutput",
"required": [
"address",
"topics",
"from_block",
"to_block",
"logs"
],
"properties": {
"logs": {
"type": "array",
"items": {
"type": "object",
"title": "LogEntry",
"required": [
"address",
"topics",
"data",
"block_number",
"transaction_hash",
"log_index"
],
"properties": {
"data": {
"type": "string",
"title": "Data"
},
"topics": {
"type": "array",
"items": {
"type": "string"
},
"title": "Topics"
},
"address": {
"type": "string",
"title": "Address"
},
"log_index": {
"type": "integer",
"title": "Log Index"
},
"block_number": {
"type": "integer",
"title": "Block Number"
},
"transaction_hash": {
"type": "string",
"title": "Transaction Hash"
}
}
},
"title": "Logs"
},
"topics": {
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"title": "Topics"
},
"address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Address"
},
"to_block": {
"type": "integer",
"title": "To Block"
},
"from_block": {
"type": "integer",
"title": "From Block"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0xb3F3…BA69d. The signed payment is good for 5 minutes.
- Paid to
- 0xb3F3…BA69d
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
"price": "$0.005",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
],
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"to_block": 52118214,
"from_block": 52118214
},
"type": "http",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"logs": [
{
"data": "0x00000000000000000000000000000000000000000000000000000000000003e8",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x0000000000000000000000003cedc3cba49c3809ee46b9bf60da75d6607b45ec",
"0x000000000000000000000000b3f32bdfe8d07825bc0d7387295ab1d7559ba69d"
],
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"log_index": 234,
"block_number": 52118214,
"transaction_hash": "0xc2490a8a0aedd1196617a0e52111f82d6059986db7f1713ab23221c91c42f5c4"
}
],
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
],
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"to_block": 52118214,
"from_block": 52118214
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"title": "EventsInput",
"required": [
"from_block",
"to_block"
],
"properties": {
"topics": {
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"title": "Topics",
"maxItems": 4
},
"address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Address",
"default": null
},
"to_block": {
"type": "integer",
"title": "To Block",
"minimum": 0
},
"from_block": {
"type": "integer",
"title": "From Block",
"minimum": 0
}
}
},
"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",
"title": "EventsOutput",
"required": [
"address",
"topics",
"from_block",
"to_block",
"logs"
],
"properties": {
"logs": {
"type": "array",
"items": {
"type": "object",
"title": "LogEntry",
"required": [
"address",
"topics",
"data",
"block_number",
"transaction_hash",
"log_index"
],
"properties": {
"data": {
"type": "string",
"title": "Data"
},
"topics": {
"type": "array",
"items": {
"type": "string"
},
"title": "Topics"
},
"address": {
"type": "string",
"title": "Address"
},
"log_index": {
"type": "integer",
"title": "Log Index"
},
"block_number": {
"type": "integer",
"title": "Block Number"
},
"transaction_hash": {
"type": "string",
"title": "Transaction Hash"
}
}
},
"title": "Logs"
},
"topics": {
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"title": "Topics"
},
"address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Address"
},
"to_block": {
"type": "integer",
"title": "To Block"
},
"from_block": {
"type": "integer",
"title": "From Block"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- —
- Last indexed by Roundhouse
- 2026-10-18 13:15Z
- Last enriched (probe, favicon, geo)
- 2026-10-10 06:46Z
- x402 version
- —
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 25 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service base-events and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=base-events' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://x402.agentindex.world/base/events, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.