ArbiPulse
The arbitrage layer for every market — 18 endpoints finding the same thing at two prices: prediction-market cross-venue spreads (Polymarket×Kalshi), GPU compute rental…
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://arbipulse.theaslangroupllc.com/api/dex",
"description": "Cross-pool and cross-chain DEX price arbitrage, with flash-loan execution paths. For DeFi and MEV agents.",
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.1 USDC on Base to 0x50ab…912fc. The signed payment is good for 5 minutes.
- Paid to
- 0x50ab…912fc
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 100000 smallest units
Pay 0.1 USDC on Base to 0x50ab…912fc. The signed payment is good for 168 hours.
- Paid to
- 0x50ab…912fc
- USD Coin contract
- 0x8335…02913
- Payment window
- 168 hours
- As published
- 100000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 985iFj…B5KX1
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x5fc5…1d168
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x79A0…D24D1
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x7547…fb603
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x779d…13736
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0xb883…a630f
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 62A253…WGI7I
- Token contract
- 31566704
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- rMnHeu…PEh32
- Token contract
- XRP
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- rMnHeu…PEh32
- Token contract
- 524C55…00000
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x50ab…912fc
- Token contract
- 0x8d0D…08B0d
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 604900
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
"amount": "100000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
},
{
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:4663",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "0x79A02482A880bCe3F13E09da970dC34dB4cD24D1",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:480",
"maxTimeoutSeconds": 300
},
{
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:143",
"maxTimeoutSeconds": 300
},
{
"asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
"extra": {
"name": "USD₮0",
"version": "1"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:196",
"maxTimeoutSeconds": 300
},
{
"asset": "0xb88339CB7199b77E23DB6E890353E22632Ba630f",
"extra": {
"name": "USDC",
"version": "2"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000",
"scheme": "exact",
"network": "eip155:999",
"maxTimeoutSeconds": 300
},
{
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"payTo": "62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I",
"amount": "100000",
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
"maxTimeoutSeconds": 300
},
{
"asset": "XRP",
"extra": {
"invoiceId": "B13FE0ADF47D427996F938F3D796F4AC",
"sourceTag": 804681468
},
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"amount": "100000",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
},
{
"asset": "524C555344000000000000000000000000000000",
"extra": {
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"invoiceId": "6E6F394F4F054548914B1A25FD89EC3C",
"sourceTag": 804681468
},
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"amount": "0.1",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
},
{
"asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
"extra": {
"name": "World Liberty Financial USD",
"version": "1",
"signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
"assetTransferMethod": "eip3009"
},
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"amount": "100000000000000000",
"scheme": "exact",
"network": "eip155:56",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"token": "WETH",
"amount_usd": "50000"
}
},
"output": {
"type": "json",
"errors": {
"400": {
"example": {
"error": "invalid request"
},
"description": "Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."
},
"402": {
"description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
},
"500": {
"example": {
"error": "upstream_failed"
},
"description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."
}
},
"example": {
"token": "WETH",
"scan_time": "2026-06-06T12:00:00Z",
"amount_usd": 50000,
"mev_context": "Same-chain DEX arb >0.1% spread is captured by MEV bots within 1-2 blocks. Manual DEX arb is only viable cross-chain or during extreme volatility.",
"execution_tools": [
{
"url": "https://app.1inch.io",
"name": "1inch",
"description": "Best DEX aggregator, auto-routes through optimal path"
},
{
"url": "https://across.to",
"name": "Across Protocol",
"description": "Fastest cross-chain bridge, 1-5 min transfers"
}
],
"price_landscape": [
{
"dex": "Uniswap V3",
"chain": "Ethereum",
"price_usd": 3842.1,
"liquidity_usd": 48000000
},
{
"dex": "Aerodrome",
"chain": "Base",
"price_usd": 3840.85,
"liquidity_usd": 12000000
},
{
"dex": "Trader Joe",
"chain": "Arbitrum",
"price_usd": 3843.5,
"liquidity_usd": 8000000
}
],
"pulse_suggestions": [],
"best_aggregator_route": "1inch or Paraswap for best execution — they auto-route across pools",
"dex_arb_opportunities": [
{
"type": "cross-chain",
"viable": false,
"buy_dex": "Aerodrome",
"mev_risk": "low",
"sell_dex": "Trader Joe",
"buy_chain": "Base",
"buy_price": 3840.85,
"sell_chain": "Arbitrum",
"sell_price": 3843.5,
"gas_cost_usd": 0.8,
"execution_path": [
"Buy WETH on Aerodrome (Base)",
"Bridge via Across Protocol",
"Sell on Trader Joe (Arbitrum)"
],
"net_profit_pct": -0.03,
"net_profit_usd": -14.8,
"bridge_cost_usd": 2.5,
"gross_spread_pct": 0.069,
"swap_fee_cost_pct": 0.1,
"flash_loan_eligible": false
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"token": {
"type": "string",
"description": "WETH | USDC | WBTC | ARB | OP | DAI | LINK | UNI (default: WETH)"
},
"chains": {
"type": "string",
"description": "ethereum,base,arbitrum,optimism (comma-separated, default: all)"
},
"amount_usd": {
"type": "string",
"description": "trade size for profit calculation, e.g. 50000"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"errors": {
"type": "object",
"description": "Documented error responses, keyed by HTTP status code",
"additionalProperties": {
"type": "object",
"required": [
"description"
],
"properties": {
"example": {
"type": "object"
},
"description": {
"type": "string"
}
}
}
},
"example": {
"type": "object"
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_gxy6qn5p"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
}Provenance
- Seen in the source catalog
- 2026-09-16 16:37Z
- Last indexed by Roundhouse
- 2026-09-24 10:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 10:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service ArbiPulse and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=ArbiPulse' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://arbipulse.theaslangroupllc.com/api/dex, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.