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
$112.15↓ 35%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
391↑ 6.8%
Last 7d vs prior 7d
35
Distinct counterparties
Over the whole indexed history

Received $112.15 of the $3067.43M Roundhouse has indexed across 1,401,742 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (391)

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$107.055912d agoGraph
0x99c4…516f$0.00$2.088910d agoGraph
0xcb8c…c2c1$0.00$1.112211h agoGraph
0xc9c7…1670$0.00$0.49539h agoGraph
0x54e1…f4e0$0.00$0.43442h agoGraph
0xec2a…d034$0.00$0.332919d agoGraph
0x6a0b…4518$0.00$0.16933d agoGraph
0x53a1…4505$0.00$0.15512d agoGraph

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

Data quality

95% of observed volume is with a single counterparty, in all 391 observed settlements.

Organic volume $112.15 of $112.15 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0xf8ec98…80cca7
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0x1bcfd6…78685c
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0xbfe71b…d0a4cd
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0x8c5dd8…9510b9
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0xd66d95…69f23b
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0x8eec28…0c0b9d
0xca1e…b80eHorizon PulseBaseBase$0.005100%coinbase21d ago0x087d2d…e8c221
0xca1e…b80eHorizon PulseBaseBase$0.005100%coinbase21d ago0x9a5c29…371b3a
0xca1e…b80eHorizon PulseBaseBase$0.01100%coinbase21d ago0x7562ce…02cf03
0xca1e…b80eHorizon PulseBaseBase$0.01100%coinbase21d ago0x3b049f…99965f
0xca1e…b80eHorizon PulseBaseBase$0.01100%coinbase21d ago0xc189ee…1f631d
0xca1e…b80eHorizon PulseBaseBase$0.02100%coinbase21d ago0x82d700…c9878c
0xca1e…b80eHorizon PulseBaseBase$0.02100%coinbase21d ago0xcc37f9…a1b008
0xca1e…b80eHorizon PulseBaseBase$0.003100%coinbase21d ago0x7beed4…447888
0xca1e…b80eHorizon PulseBaseBase$0.04100%coinbase21d ago0x76d5fb…ef1ed7
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0x7375c9…811114
0xca1e…b80eHorizon PulseBaseBase$0.005100%coinbase21d ago0x2159b1…5b3574
0xca1e…b80eHorizon PulseBaseBase$0.02100%coinbase21d ago0x9e2ca1…4b8293
0xca1e…b80eHorizon PulseBaseBase$0.002100%coinbase21d ago0x13d610…eae865
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase21d ago0xbdf19a…330379
0x54e1…f4e0Horizon PulseBaseBase$0.003100%coinbase21d ago0x9c2d49…3560f1
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase21d ago0xe41693…2cceeb
0x54e1…f4e0Horizon PulseBaseBase$0.01100%coinbase21d ago0x312956…337af5
0x54e1…f4e0Horizon PulseBaseBase$0.002100%coinbase21d ago0x37b78d…7840bd
0x54e1…f4e0Horizon PulseBaseBase$0.01100%coinbase21d ago0x29544d…6f913d

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.