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
$111.74↓ 52%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
359↓ 39%
Last 7d vs prior 7d
35
Distinct counterparties
Over the whole indexed history

Received $111.74 of the $3059.45M Roundhouse has indexed across 1,397,037 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (359)

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$2.08899d agoGraph
0xcb8c…c2c1$0.00$1.001614m agoGraph
0xc9c7…1670$0.00$0.48492h agoGraph
0xec2a…d034$0.00$0.332918d agoGraph
0x6a0b…4518$0.00$0.16931d agoGraph
0x53a1…4505$0.00$0.15510d agoGraph
0x54e1…f4e0$0.00$0.13221d 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 359 observed settlements.

Organic volume $111.74 of $111.74 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0xcb8c…c2c1Horizon PulseBaseBase$0.25100%coinbase14m ago0x7d9cf3…236805
0xcb8c…c2c1Horizon PulseBaseBase$0.02100%coinbase14m ago0x1c53eb…adf900
0xcb8c…c2c1Horizon PulseBaseBase$0.01100%coinbase14m ago0xfb9027…0c8d49
0xcb8c…c2c1Horizon PulseBaseBase$0.05100%coinbase1h ago0x4878ef…147738
0xcb8c…c2c1Horizon PulseBaseBase$0.02100%coinbase1h ago0x281e8e…694b86
0xcb8c…c2c1Horizon PulseBaseBase$0.01100%coinbase1h ago0x51b97e…939791
0xcb8c…c2c1Horizon PulseBaseBase$0.01100%coinbase1h ago0xb7822b…0a6f3e
0xcb8c…c2c1Horizon PulseBaseBase$0.01100%coinbase1h ago0xaf1404…e18f5e
0xcb8c…c2c1Horizon PulseBaseBase$0.003100%coinbase1h ago0xc3cca7…6e80fb
0xcb8c…c2c1Horizon PulseBaseBase$0.002100%coinbase1h ago0xedcb87…4ab873
0xcb8c…c2c1Horizon PulseBaseBase$0.05100%coinbase2h ago0x75c0a0…d5674a
0xcb8c…c2c1Horizon PulseBaseBase$0.50100%coinbase2h ago0xc26546…a0267c
0xcb8c…c2c1Horizon PulseBaseBase$0.02100%coinbase2h ago0x54f358…97a663
0xcb8c…c2c1Horizon PulseBaseBase$0.02100%coinbase2h ago0xf8df16…717c0b
0xcb8c…c2c1Horizon PulseBaseBase$0.02100%coinbase2h ago0xd822d5…d7c886
0xcb8c…c2c1Horizon PulseBaseBase$0.005100%coinbase2h ago0x429aa3…e9bfed
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase2h ago0x0d6eca…6b8181
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase1d ago0x16c98c…ecfb1b
0x54e1…f4e0Horizon PulseBaseBase$0.02100%coinbase1d ago0x01aeba…ec0676
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase1d ago0x7f559a…b991c7
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase1d ago0x2eaf42…9cedd3
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase1d ago0x2b5204…aa4a49
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase2d ago0x2d7862…3e6652
0x5a53…f357Horizon PulseBaseBase$0.002100%coinbase3d ago0x648044…d6b4f9
0x5a53…f357Horizon PulseBaseBase$0.002100%coinbase3d ago0xfe2dfe…9ba8d7

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.