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$1.112212h 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
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase22d ago0x30d470…22680f
0xc9c7…1670Horizon PulseBaseBase$0.003100%coinbase23d ago0x3ac843…138354
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase23d ago0xf4d3f4…d20426
0xc9c7…1670Horizon PulseBaseBase$0.04100%coinbase23d ago0xba2cd1…3dd560
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase23d ago0x1a32ca…08f778
0xc9c7…1670Horizon PulseBaseBase$0.01100%coinbase23d ago0x1be390…86cd76
0xc9c7…1670Horizon PulseBaseBase$0.03100%coinbase23d ago0xea4b3f…c4179c
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase23d ago0x8de6e9…91ad55
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase24d ago0xf22eaf…c572a7
0xc9c7…1670Horizon PulseBaseBase$0.01100%coinbase24d ago0x5c1525…fb375d
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase24d ago0xcf0ad5…66f83d
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase24d ago0x90632d…5d6c6d
0xec2a…d034Horizon PulseBaseBase$0.002100%coinbase24d ago0x4e704f…1a6a9f
0xec2a…d034Horizon PulseBaseBase$0.002100%coinbase24d ago0xd34f8a…e80af1
0xec2a…d034Horizon PulseBaseBase$0.002100%coinbase24d ago0x286294…704b9b
0xec2a…d034Horizon PulseBaseBase$0.002100%coinbase24d ago0x5cbc15…6799e2
0xec2a…d034Horizon PulseBaseBase$0.005100%coinbase24d ago0xe58b0d…03962d
0x99c4…516fHorizon PulseBaseBase$0.03100%coinbase24d ago0x19ce1c…58071b
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0xac77e6…614cfd
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0x643a61…c8ec7e
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase24d ago0x2a9759…ebf60b
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x776f4f…6fe56e
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x4460fa…ee3c61
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x56e922…e1b769
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x5a64af…a33e04

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.