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
$111.78↓ 50%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
365↓ 29%
Last 7d vs prior 7d
35
Distinct counterparties
Over the whole indexed history

Received $111.78 of the $3064.22M Roundhouse has indexed across 1,399,289 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (365)

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$1.04204h agoGraph
0xc9c7…1670$0.00$0.485115h agoGraph
0xec2a…d034$0.00$0.332919d agoGraph
0x6a0b…4518$0.00$0.16932d agoGraph
0x53a1…4505$0.00$0.15511d agoGraph
0x54e1…f4e0$0.00$0.13222d 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 365 observed settlements.

Organic volume $111.78 of $111.78 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0xf7df04…07873b
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0x224918…a6c98a
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase8d ago0x05ec50…b0fd85
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0x19315c…2a22f8
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0x10a201…2ed74c
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0x3dbaef…cae4b7
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0xd7bc26…bdf6ae
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase8d ago0xd59894…fbb593
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase8d ago0xfd25e2…bc90c5
0x35fe…c030Horizon PulseBaseBase$0.002100%coinbase9d ago0xc3b3db…77c8c5
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase9d ago0x4df6db…71db6c
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase9d ago0x7805f2…b4e841
0x8ec9…9d15Horizon PulseBaseBase$0.002100%coinbase10d ago0x2afacb…5684b4
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase10d ago0xa190eb…ce4494
0x8ec9…9d15Horizon PulseBaseBase$0.002100%coinbase10d ago0xb8eeac…be1c8e
0xaa34…1db3Horizon PulseBaseBase$0.002100%coinbase10d ago0x6fa371…3ccbe5
0x54e1…f4e0Horizon PulseBaseBase$0.005100%coinbase10d ago0x90ec98…9fd6b2
0xa1d1…1978Horizon PulseBaseBase$0.002100%coinbase10d ago0xdf1504…9ccb79
0x35fe…c030Horizon PulseBaseBase$0.002100%coinbase10d ago0xbd15d7…9ce178
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase10d ago0x5134fa…44e027
0x8ec9…9d15Horizon PulseBaseBase$0.002100%coinbase10d ago0xff6aa8…91958b
0xaa34…1db3Horizon PulseBaseBase$0.002100%coinbase10d ago0x30ea72…1507e7
0xaa34…1db3Horizon PulseBaseBase$0.002100%coinbase11d ago0x7dbebb…2b6daa
0x35fe…c030Horizon PulseBaseBase$0.002100%coinbase11d ago0xaf5d2a…3e0eb0
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase11d ago0x482869…3d7cc7

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.