Arkham x402
Programmatic access to Arkham wallet intelligence and market data — via API keys and x402 pay-per-request.
DataLiveeip155:8453Exactvia cdp
Polymarket
Settlements · 30d
362↓ 79%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$938.80
Verified settled volume
1,047 settlements proven x402 by their on-chain EIP-3009 marker.
$2.00
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.
2USDC≈ $2 USD
on Base · exact scheme
Pay 2 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
- 2000000 smallest units
2000000units
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": "2000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "6bfN4hVbypmM1p4mV4qUpNushvm3W8GiAv1CrqEfiUdM",
"amount": "2000000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"sort": "desc",
"period": "1d",
"entries": [
{
"rank": 1,
"tags": [
{
"tag": "baseball",
"label": "Baseball",
"events": 18648,
"volume": "13142524.850084"
},
{
"tag": "games",
"label": "Games",
"events": 18648,
"volume": "13142524.850084"
},
{
"tag": "mlb",
"label": "Mlb",
"events": 18648,
"volume": "13142524.850084"
}
],
"periodPnl": "300749.583652",
"tokensWon": 123,
"tradeCount": 142,
"tokensTotal": 238,
"userAddress": "0x5e9458202b5817A72Cf81105EC8A30e6f3705ba1"
},
{
"rank": 2,
"tags": [
{
"tag": "games",
"label": "Games",
"events": 17425,
"volume": "42549972.811718"
},
{
"tag": "sports",
"label": "Sports",
"events": 17425,
"volume": "42549972.811718"
},
{
"tag": "baseball",
"label": "Baseball",
"events": 4135,
"volume": "18799123.407022"
}
],
"periodPnl": "252263.11266239",
"tokensWon": 241,
"tradeCount": 20,
"tokensTotal": 514,
"userAddress": "0x4BFF30Af91642dc7d2b19A8664378Fe55C45Fc26"
},
{
"rank": 3,
"tags": [
{
"tag": "politics",
"label": "Politics",
"events": 4504,
"volume": "5195284.291581"
},
{
"tag": "fed",
"label": "Fed",
"events": 3764,
"volume": "3576222.36051"
},
{
"tag": "fed-rates",
"label": "Fed Rates",
"events": 3663,
"volume": "3551694.256846"
}
],
"periodPnl": "189114.8628772455",
"tokensWon": 748,
"tradeCount": 104,
"tokensTotal": 1227,
"userAddress": "0x3A8aa345D5Db7ec5138298C8C4f4540259be7699"
}
]
}
}
},
"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",
"properties": {
"limit": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Max entries (1-200). Default: 100"
},
"order": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Sort order: desc (top traders) or asc (worst traders). Default: desc"
},
"offset": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Pagination offset. Default: 0"
},
"period": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Time period: 1d, 1w, 1m, all. Default: 1d"
},
"address": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional trade address. If set, also returns this user's rank."
}
},
"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 09:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 23:45Z
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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/polymarket/leaderboard, 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.