Roundhouse

On-Chain Events

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MediaLiveeip155:8453Exactvia cdp
https://x402-endpoints.onrender.com/chain/events
Onchain-eventsEth-getlogsEvent-logsDecoded-eventsBase
Settlements · 30d
155↓ 36%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$31.14
Verified settled volume
574 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-02 05:26Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x1D1B81247C407521E2A01F3E21514870dcf1620f

The 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.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0x1D1B…1620f. The signed payment is good for 5 minutes.

Paid to
0x1D1B…1620f
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
50000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1D1B81247C407521E2A01F3E21514870dcf1620f",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "event": "Transfer",
          "limit": 10,
          "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "lookback": 500
        }
      },
      "output": {
        "type": "json",
        "example": {
          "rpc": {
            "provider": "alchemy",
            "fallback_used": false
          },
          "count": 1,
          "query": {
            "event": "Transfer",
            "limit": 10,
            "topic0": "0xddf252ad...b3ef",
            "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "lookback": 500,
            "to_block": 33810500,
            "from_block": 33810000
          },
          "cached": false,
          "events": [
            {
              "event": "Transfer",
              "params": {
                "to": "0x2222...",
                "from": "0x1111...",
                "value": 1500000
              },
              "topic0": "0xddf252ad...b3ef",
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "decoded": true,
              "tx_hash": "0xabc...",
              "log_index": 12,
              "signature": "Transfer(address,address,uint256)",
              "block_number": 33810480
            }
          ],
          "source": "Base JSON-RPC eth_getLogs (Alchemy, fallback public RPC)",
          "decoders": [
            "Approval",
            "Burn",
            "Mint",
            "Swap(V2)",
            "Swap(V3)",
            "Sync",
            "Transfer",
            "TransferBatch",
            "TransferSingle"
          ],
          "timestamp": "2026-07-02T12:00:00Z",
          "truncated": false,
          "disclaimer": "Decoded from public on-chain logs; unknown event signatures are returned raw. Block span and result count are capped.",
          "block_range": {
            "span": 500,
            "to_block": 33810500,
            "from_block": 33810000,
            "latest_block": 33810500
          },
          "total_in_range": 1
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "contract"
              ],
              "properties": {
                "event": {
                  "type": "string",
                  "description": "Event name (Transfer/Approval/Swap/Mint/Burn/TransferSingle/Sync), full signature 'Transfer(address,address,uint256)', or 0x topic0. Omit for all."
                },
                "limit": {
                  "type": "integer",
                  "description": "Max events (1-100, most recent in range)"
                },
                "contract": {
                  "type": "string",
                  "pattern": "^0x[a-fA-F0-9]{40}$",
                  "description": "Contract address to read logs from (0x + 40 hex)"
                },
                "lookback": {
                  "type": "integer",
                  "description": "If from/to omitted, scan the last N blocks (1-5000, default 2000)"
                },
                "to_block": {
                  "type": "integer",
                  "description": "End block (inclusive). Omit for latest."
                },
                "from_block": {
                  "type": "integer",
                  "description": "Start block (inclusive). Omit to use lookback."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-02 05:26Z
Last indexed by Roundhouse
2026-07-31 06:10Z
Last enriched (probe, favicon, geo)
2026-09-13 19:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service On-Chain 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=On-Chain%20Events'
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-endpoints.onrender.com/chain/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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.