x402 merchant
Horizon Pulse$0.002 / callhorizonpulse.dev ↗
CryptoGas-feesBaseEthereumTransactions

Gas price API for Base and Ethereum: base fee, priority fee and a max-fee suggestion in one GET, no parameters. Returns JSON per network: baseFeeGwei, priorityFeeGwei (p50, with p10/p90), suggestedMaxFeeGwei (2x base + priority), timingHint (cheap/normal/expensive vs the last 20 blocks) and simpleTransfer cost in ETH and USD, plus ethUsd. From eth_feeHistory with eth_gasPrice fallback. Descriptive, not a forecast. Errors are not charged on Base (other rails may charge).

MerchantReport

Horizon Pulse

0x5b32c973596078a967562ca652761404f19be0e9Explorer
Received
$111.87↓ 47%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
374↓ 14%
Last 7d vs prior 7d
35
Distinct counterparties
Over the whole indexed history

Received $111.87 of the $3064.22M Roundhouse has indexed across 1,399,639 wallets — less than 0.0001% of it.

Whole-history totals from the index rollup, which can be up to 30 minutes behind.

Chains (from the recent scan): Base (374)

Funds flow over time

Activity

MayJunJulAugSepOctNov
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0xca1e…b80e$0.00$107.055911d agoGraph
0x99c4…516f$0.00$2.088910d agoGraph
0xcb8c…c2c1$0.00$1.04207h agoGraph
0xc9c7…1670$0.00$0.485117h agoGraph
0xec2a…d034$0.00$0.332919d agoGraph
0x54e1…f4e0$0.00$0.223144m agoGraph
0x6a0b…4518$0.00$0.16932d agoGraph
0x53a1…4505$0.00$0.15511d agoGraph

Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.

Data quality

96% of observed volume is with a single counterparty, in all 374 observed settlements.

Organic volume $111.87 of $111.87 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x38b6…8b9fHorizon PulseBaseBase$0.002100%coinbase15d ago0x15f546…2b02d1
0x2465…a1b1Horizon PulseBaseBase$0.002100%coinbase15d ago0x26d3a7…ea7000
0xb83b…75ccHorizon PulseBaseBase$0.002100%coinbase15d ago0xc152ae…24f3ea
0x2465…a1b1Horizon PulseBaseBase$0.002100%coinbase15d ago0x5fa812…62c81b
0xb83b…75ccHorizon PulseBaseBase$0.002100%coinbase15d ago0xbca7a2…da38f9
0x2465…a1b1Horizon PulseBaseBase$0.002100%coinbase15d ago0xb254c8…0ed900
0xe827…50a0Horizon PulseBaseBase$0.002100%coinbase15d ago0xeb49ca…92cf31
0x38b6…8b9fHorizon PulseBaseBase$0.002100%coinbase15d ago0x342149…ae1f0e
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase15d ago0x2a4f73…0c1288
0xb83b…75ccHorizon PulseBaseBase$0.002100%coinbase15d ago0x6d2adf…207e0c
0x38b6…8b9fHorizon PulseBaseBase$0.002100%coinbase15d ago0x02c246…e47155
0x2465…a1b1Horizon PulseBaseBase$0.002100%coinbase15d ago0xe17464…505667
0xb83b…75ccHorizon PulseBaseBase$0.002100%coinbase15d ago0x8be79b…6f9367
0xe827…50a0Horizon PulseBaseBase$0.002100%coinbase15d ago0xbe1f13…a85ff7
0x4998…e08cHorizon PulseBaseBase$0.002100%coinbase15d ago0xe70466…fb88f6
0x9d42…ece9Horizon PulseBaseBase$0.002100%coinbase16d ago0x1c38c5…78d1ba
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase16d ago0x198e18…c09725
0xc9c7…1670Horizon PulseBaseBase$0.003100%coinbase16d ago0xb7b786…497ff9
0xca1e…b80eHorizon PulseBaseBase$1.00100%coinbase16d ago0xaa41ea…2de6ec
0xca1e…b80eHorizon PulseBaseBase$5.00100%coinbase17d ago0xe9488b…7209c4
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase17d ago0xe02190…1d18b3
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase17d ago0x6a21b0…bdd193
0xc9c7…1670Horizon PulseBaseBase$0.03100%coinbase17d ago0x41f5e2…415d59
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase17d ago0xe26046…0c296d
0xca1e…b80eHorizon PulseBaseBase$5.00100%coinbase17d ago0x9916bc…edcfa7

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check Horizon Pulse's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x5b32c973596078a967562ca652761404f19be0e9

Open skill.md
Show the prompt
Using Roundhouse, tell me whether this x402 merchant is worth paying: how many distinct
agents have paid it, how recently, and for what.

  Merchant wallet: 0x5b32c973596078a967562ca652761404f19be0e9

curl -s 'https://api.roundhouseai.io/v0/merchants/0x5b32c973596078a967562ca652761404f19be0e9'
curl -s 'https://api.roundhouseai.io/v0/entities/0x5b32c973596078a967562ca652761404f19be0e9/settlements?limit=50'

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.