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$0.495310h agoGraph
0x54e1…f4e0$0.00$0.43443h 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
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase24d ago0xd0f9a5…69adb6
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x668e27…684767
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase24d ago0x872473…76164d
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x4c9f92…479c63
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase24d ago0xabf8bb…cd8bd9
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x79fa3e…b9240b
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x8a4997…23ce3d
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x361209…def21f
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x9cf8c4…4be760
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0x284298…6b9497
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase24d ago0x34c782…e71260
0x99c4…516fHorizon PulseBaseBase$0.04100%coinbase24d ago0xeace8d…4bd4b2
0x99c4…516fHorizon PulseBaseBase$0.003100%coinbase24d ago0xb1e3d3…4dbe1d
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0x1dee00…a18252
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0xdaa744…302c8d
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase24d ago0x5fec66…caa246
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase24d ago0x09a287…99a6ad
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0x68d04f…81f238
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0x37a567…4a4a44
0x99c4…516fHorizon PulseBaseBase$0.03100%coinbase24d ago0xb14b58…c24bd6
0x99c4…516fHorizon PulseBaseBase$0.02100%coinbase24d ago0xda6e69…62114b
0x99c4…516fHorizon PulseBaseBase$0.01100%coinbase24d ago0x6e7c03…d696b5
0x99c4…516fHorizon PulseBaseBase$0.005100%coinbase24d ago0x2aa31f…66513d
0x99c4…516fHorizon PulseBaseBase$0.002100%coinbase24d ago0xb8a2cf…a22e31
0x59e8…a801Horizon PulseBaseBase$0.002100%coinbase25d ago0x083178…6c44ef

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.