Roundhouse

Filtered to Base Sepolia where marked. The headline figures, charts and heatmap cover all listed chains.

x402 facilitatorBaseUnattributed

0xef4f…78ac

1 relayer wallet · relayer observed on-chain

Txs relayed (lifetime)
10,639
Bars: last 90 days
Settled (182d)
$6.55
Bars: last 90 days
Buyers
5
Distinct, last 182d
Sellers
8
Distinct, last 182d
—
Share of x402 (est)
Sampled 30-day estimate
22h ago
Last seen

Settled volume, last 182 days

$6.55 total

Settlements relayed, last 182 days

589 total

Settlement activity

182 days, every settlement counted
MayJunJulAugSepOctNov
LessMore

Every settlement attributed to this facilitator, per day, across its whole relayer pool. Click a day to see them in the ledger.

Settles most often for

CounterpartyPaid via itReceived via itSettlementsLast
0xe33a…92e2$6.52$0.0057050d agoGraph
0x4020…0003$0.00$6.1834050d agoGraph
0x1c47…a9f6$0.00$0.1918950d agoGraph
0x7e42…86e3$0.00$0.132670d agoGraph
0xef4f…78ac$0.00$0.011870d agoGraph
0x04a0…0c19$0.01$0.00655d agoGraph
0xcfc1…b442$0.00$0.01275d agoGraph
0x78b3…8bf5$0.01$0.00162d agoGraph

The wallets this facilitator most often relays settlements for, over its recent attributed window.

Settlements relayedBase Sepolia only

Open in the ledger, filtered
Payer PayeeChainAmountx402RouteAgeTxn hash
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.00570%0xef4f…78ac50d ago0x6b178c…ebc22a
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.00570%0xef4f…78ac50d ago0xfe7a6b…8974d4
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.00570%0xef4f…78ac50d ago0x9f6438…250145
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.00570%0xef4f…78ac50d ago0x5a908a…410e83
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.0170%0xef4f…78ac50d ago0xf4c18a…ebb541
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x594c8b…5ee309
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x52f6c7…9ad70b
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x07c405…0e3ff8
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.0170%0xef4f…78ac50d ago0x5dfa29…b8f917
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x76a011…deb9d4
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0xfc4065…972d2c
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.0170%0xef4f…78ac50d ago0x54c421…1cdf5e
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x7c7883…fd6995
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0xc87081…796565
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.0170%0xef4f…78ac50d ago0x3b4509…272618
0xe33a…92e20x1c47…a9f6Base SepoliaBase Sepolia$0.00170%0xef4f…78ac50d ago0x4c3eba…9c01b7
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0x98e853…9ddc17
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0x2deff7…8672d0
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0xe7bcc2…df1af6
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0x4444e6…ed3167
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0x35c43e…423cc2
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac54d ago0xb09d96…bb9d10
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac55d ago0x94122a…4b3872
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac55d ago0x2c037f…8c14ad
0xe33a…92e20x4020…0003Base SepoliaBase Sepolia$0.1070%0xef4f…78ac55d ago0x55510d…6eae55

Relayer wallets (gas sponsors)

WalletTxs relayedGas floatPayersPayees
0xef4f…78ac 10,6390.0041 ETH——

Txs relayed = the wallet's on-chain transaction count (fact). Settled volume is an exact sum of the settlements we hold for this operator over 182 days. Payers/payees and share are from sampled 30-day discovery windows (estimates) — a share needs a site-wide denominator, which lives only on /stats. A facilitator typically rotates settlements across a wallet pool and keeps each on a thin, topped-up gas float. Every figure on this page covers the 1 attribution value that resolve to this operator, not just its group key.

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will read 0xef4f…78ac's settlement record over the free read API. No key, no account.

GET api.roundhouseai.io/v0/transactions?via=0xef4f6abbc1cb87aea6cd86b5a4019fc6599178ac

This relayer has no named operator in the facilitator registry yet, so it is identified by its wallet.

Open skill.md
Show the prompt
Using Roundhouse, tell me what this x402 facilitator actually relays: volume, who it
settles for, and how steady it has been.

  Facilitator: 0xef4f…78ac

curl -s 'https://api.roundhouseai.io/v0/transactions?via=0xef4f6abbc1cb87aea6cd86b5a4019fc6599178ac&limit=100'
curl -s 'https://api.roundhouseai.io/v0/facilitators'

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://preview.roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://preview.roundhouseai.io/skill.md first — it is the whole procedure.