Arkham x402
Programmatic access to Arkham wallet intelligence and market data — via API keys and x402 pay-per-request.
TradingLiveeip155:8453Exactvia cdp
Swaps
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$938.80
Verified settled volume
1,047 settlements proven x402 by their on-chain EIP-3009 marker.
$8.00
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-28 09:24Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x942bD3E3073543c674Efc0C378D5bcE20f9120C1The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
8USDC≈ $8 USD
on Base · exact scheme
Pay 8 USDC on Base to 0x942b…120C1. The signed payment is good for 5 minutes.
- Paid to
- 0x942b…120C1
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 8000000 smallest units
8000000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
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
- 6bfN4h…fiUdM
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x942bD3E3073543c674Efc0C378D5bcE20f9120C1",
"amount": "8000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "6bfN4hVbypmM1p4mV4qUpNushvm3W8GiAv1CrqEfiUdM",
"amount": "8000000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"base": [
"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"count": 10000,
"swaps": [
{
"id": "0xb62ab136f09349dd1d2f7c97e830a161c003e60509ff27cdf1f1769d18b963a8_2",
"chain": "ethereum",
"valid": true,
"sender": {
"chain": "ethereum",
"address": "0x51C72848c68a965f66FA7a88855F9f7784502a7F",
"contract": true,
"arkhamLabel": {
"name": "Market Maker",
"address": "0x51C72848c68a965f66FA7a88855F9f7784502a7F",
"chainType": "evm"
},
"arkhamEntity": {
"id": "wintermute",
"name": "Wintermute",
"note": "",
"type": "fund",
"service": null,
"twitter": "https://twitter.com/wintermute_t",
"website": "https://www.wintermute.com/",
"linkedin": "https://www.linkedin.com/company/wintermute-trading",
"crunchbase": "https://www.crunchbase.com/organization/wintermute-trading"
},
"isUserAddress": false
},
"token0": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"token1": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"receiver": {
"chain": "ethereum",
"address": "0x51C72848c68a965f66FA7a88855F9f7784502a7F",
"contract": true,
"arkhamLabel": {
"name": "Market Maker",
"address": "0x51C72848c68a965f66FA7a88855F9f7784502a7F",
"chainType": "evm"
},
"arkhamEntity": {
"id": "wintermute",
"name": "Wintermute",
"note": "",
"type": "fund",
"service": null,
"twitter": "https://twitter.com/wintermute_t",
"website": "https://www.wintermute.com/",
"linkedin": "https://www.linkedin.com/company/wintermute-trading",
"crunchbase": "https://www.crunchbase.com/organization/wintermute-trading"
},
"isUserAddress": false
},
"token0Id": "usd-coin",
"token1Id": "weth",
"blockHash": "0x6e9f88a716532f88ca3e3154a4988dc82405fe7774bb2db1965880c02833a051",
"token0Name": "USD Coin",
"token1Name": "Wrapped Ether",
"unitValue0": -9128487.881334,
"unitValue1": 4263.136684788042,
"blockNumber": 24643153,
"token0Symbol": "USDC",
"token1Symbol": "WETH",
"historicalUSD": 9128487.881334,
"blockTimestamp": "2026-03-12T18:23:47Z",
"token0Decimals": 6,
"token1Decimals": 18,
"contractAddress": {
"chain": "ethereum",
"address": "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640",
"contract": true,
"arkhamLabel": {
"name": "USDC 3",
"address": "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640",
"chainType": "evm"
},
"arkhamEntity": {
"id": "uniswap",
"name": "Uniswap",
"note": "",
"type": "dex",
"service": null,
"twitter": "https://twitter.com/Uniswap",
"website": "https://uniswap.org",
"linkedin": "https://www.linkedin.com/company/uniswaporg",
"crunchbase": "https://www.crunchbase.com/organization/uniswap-labs"
},
"isUserAddress": false
},
"contractEntityId": "uniswap"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"base"
],
"properties": {
"to": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter to swaps where the base bought one of these tokens (token addresses or token IDs). Combine with 'from' for a spe…"
},
"base": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter by specific entity or address involved in the swap. Required — omitting it returns an empty list."
},
"flow": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Swap direction relative to the base address. Valid values: 'in' (receiving token1), 'out' (sending token0), or 'all'. D…"
},
"from": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter to swaps where the base sold one of these tokens (token addresses or token IDs). Combine with 'to' for a specifi…"
},
"limit": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Maximum number of results to return. Default: 20. Max: 1649."
},
"chains": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Chains to filter by, as a single comma-separated value (e.g. 'ethereum,solana'). If omitted, returns data across all su…"
},
"offset": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Pagination offset. offset + limit must not exceed 10000."
},
"tokens": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "List of token addresses or token IDs that appear as either token0 or token1."
},
"usdGte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Minimum historical USD value."
},
"usdLte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Maximum historical USD value."
},
"senders": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter by the transaction parties that initiated the swap (sender addresses or entities). Distinct from 'from', which f…"
},
"sortDir": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Sort direction: 'asc' (ascending) or 'desc' (descending). Defaults to 'desc'."
},
"sortKey": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Field by which to sort the results. One of: time, usd."
},
"timeGte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter swaps at or after this time (unix ms, unix seconds, RFC3339, or YYYY-MM-DD)."
},
"timeLte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter swaps at or before this time (unix ms, unix seconds, RFC3339, or YYYY-MM-DD)."
},
"timeLast": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Time range filter using relative durations (e.g. 24h, 7d). Cannot be combined with timeGte/timeLte."
},
"protocols": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter by protocol/DEX addresses or entity IDs."
},
"receivers": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Filter by the transaction parties that received the swap output (receiver addresses or entities). Distinct from 'to', w…"
},
"value0Gte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Minimum token0 amount (decimal-adjusted; matched on absolute value)."
},
"value0Lte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Maximum token0 amount (decimal-adjusted; matched on absolute value)."
},
"value1Gte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Minimum token1 amount (decimal-adjusted; matched on absolute value)."
},
"value1Lte": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Maximum token1 amount (decimal-adjusted; matched on absolute value)."
},
"counterparties": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "List of addresses or entities to treat strictly as counterparties."
}
},
"additionalProperties": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
]
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema"
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_ej6r6uyr"
},
"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
- 2026-07-28 09:24Z
- Last indexed by Roundhouse
- 2026-08-27 09:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 14:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
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. 4 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 Arkham x402 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=Arkham%20x402' 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://api.arkm.com/x402/swaps, 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.