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 $3063.55M Roundhouse has indexed across 1,399,142 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$1.04203h agoGraph
0xc9c7…1670$0.00$0.485114h 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
0xc9c7…1670Horizon PulseBaseBase$0.02100%coinbase2d ago0x7f559a…b991c7
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase2d ago0x2eaf42…9cedd3
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase2d 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
0x72c5…159bHorizon PulseBaseBase$0.01100%coinbase3d ago0x477885…3562a1
0x72c5…159bHorizon PulseBaseBase$0.01100%coinbase3d ago0x4c4e15…2512a6
0x72c5…159bHorizon PulseBaseBase$0.01100%coinbase3d ago0x2652cf…59774b
0xc47f…b0b0Horizon PulseBaseBase$0.02100%coinbase4d ago0x31bffb…653f5e
0xc47f…b0b0Horizon PulseBaseBase$0.02100%coinbase4d ago0xe9be66…ad0336
0x3ed9…430eHorizon PulseBaseBase$0.03100%coinbase5d ago0x10393e…fc100f
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase5d ago0x4d44d4…fa3a4d
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase5d ago0xcfe771…f5e63f
0x35fe…c030Horizon PulseBaseBase$0.002100%coinbase6d ago0xed4957…fed39a
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase6d ago0xbb4f04…ce61c1
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase6d ago0x78fde1…4f2129
0xc9c7…1670Horizon PulseBaseBase$0.002100%coinbase7d ago0x4da0cb…46c50e
0x9a10…6c92Horizon PulseBaseBase$0.002100%coinbase7d ago0x10ec3e…b6bd86
0x5a53…f357Horizon PulseBaseBase$0.002100%coinbase7d ago0xded807…f3184c
0x5a53…f357Horizon PulseBaseBase$0.002100%coinbase7d ago0xbbf7c1…d1719f
0x35fe…c030Horizon PulseBaseBase$0.002100%coinbase7d ago0x542d42…d6c137
0x73cc…1ea4Horizon PulseBaseBase$0.002100%coinbase7d ago0xf39ab5…f509fa
0x7ef1…4ae2Horizon PulseBaseBase$0.002100%coinbase8d ago0x83aa6c…10050b
0x54e1…f4e0Horizon PulseBaseBase$0.005100%coinbase8d ago0x0f6874…ee07bc

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.