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
0x8ec9…9d15Horizon PulseBaseBase$0.002100%coinbase11d ago0x426152…e4ab50
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0xd069d8…6b678c
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0x74ab1c…91a9bc
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0xa5c315…b5e0b2
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0x98caf9…924d00
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase11d ago0xc59b2e…b0e95a
0x99c4…516fHorizon PulseBaseBase$1.00100%coinbase11d ago0x8ae9c3…cb0e2c
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0x42c62f…2c4f83
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0x0e885d…9380f0
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0x33ac49…3137af
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase11d ago0xc3d701…ae8412
0x53a1…4505Horizon PulseBaseBase$0.03100%coinbase11d ago0x067756…ca9631
0x53a1…4505Horizon PulseBaseBase$0.03100%coinbase11d ago0x1b57ed…4ad994
0x53a1…4505Horizon PulseBaseBase$0.03100%coinbase11d ago0xbae803…c2c340
0x53a1…4505Horizon PulseBaseBase$0.03100%coinbase11d ago0xbb5c95…34b565
0xca1e…b80eHorizon PulseBaseBase$1.00100%coinbase11d ago0x2ccf5b…0cf76c
0xc498…254aHorizon PulseBaseBase$0.002100%coinbase11d ago0x02ebc6…7af432
0xc498…254aHorizon PulseBaseBase$0.002100%coinbase11d ago0xa52172…f87116
0x471b…09f6Horizon PulseBaseBase$0.002100%coinbase12d ago0x9c6d60…8fbd9b
0x53a1…4505Horizon PulseBaseBase$0.03100%coinbase12d ago0x875dda…348b86
0x9a10…6c92Horizon PulseBaseBase$0.002100%coinbase12d ago0x9337da…3d6d37
0xca1e…b80eHorizon PulseBaseBase$0.01100%coinbase13d ago0x4efa5a…c17ada
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase13d ago0x204558…156a40
0x6031…c2d1Horizon PulseBaseBase$0.002100%coinbase13d ago0xdeda67…703e91
0x6031…c2d1Horizon PulseBaseBase$0.002100%coinbase13d ago0xa2be19…ee6830

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.