Arkham x402
Get Arkham Polymarket events. $0.60 per call.
DataLiveeip155:8453Exactvia cdp
Polymarket
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.
$0.600
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.
0.6USDC≈ $0.6 USD
on Base · exact scheme
Pay 0.6 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
- 600000 smallest units
600000units
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": "600000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "6bfN4hVbypmM1p4mV4qUpNushvm3W8GiAv1CrqEfiUdM",
"amount": "600000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"limit": 50,
"events": [
{
"live": false,
"slug": "will-trump-be-in-the-wc-champions-photo-20260608152527021",
"ended": false,
"title": "Will Trump be in the WC Champions Photo?",
"active": true,
"closed": false,
"endDate": "2026-07-20T03:59:00Z",
"eventId": 572993,
"iconUrl": "https://polymarket-upload.s3.us-east-2.amazonaws.com/will-trump-be-in-the-wc-champions-photo-20260608152527021-eJaeDFLpXz06.jpg",
"imageUrl": "https://polymarket-upload.s3.us-east-2.amazonaws.com/will-trump-be-in-the-wc-champions-photo-20260608152527021-eJaeDFLpXz06.jpg",
"restricted": true,
"description": "This market will resolve to “Yes” if Donald Trump is visibly in the frame for the winning team's official team photo following the 2026 FIFA World Cup Final. Otherwise, this market will resolve to “No”.\n\nIf Trump does not attend the 2026 FIFA World Cup Final, this market will resolve to “No”.\n\nIf the 2026 FIFA World Cup Final is cancelled or postponed beyond August 2, 2026, 11:59 PM ET, this market will resolve to “No”.\n\nThe resolution source for this market will be a consensus of credible reporting.",
"marketCount": 1,
"volume24hUsdc": "5044026.311715",
"marketPreviews": [
{
"outcomes": [
"Yes"
],
"question": "Will Trump be in the WC Champions Photo?",
"resolved": false,
"yesPrice": 0.9975,
"conditionId": "0xc0b7319f73f248310b059c231fb069e64dbd68ca81dd9933728ca192b54c3cc4",
"volume24hUsdc": "5044026.311715",
"yesPriceChange24h": 0.0050000000000001155
}
],
"volume24hChangePct": 11.94696504405238
}
],
"offset": 0,
"totalCount": 717583
}
}
},
"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": {
"tag": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. Filter by event tag. Matches lowercase Polymarket tags case-insensitively."
},
"limit": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Max events to return (1-100). Default: 50."
},
"order": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Sort order: asc or desc. Default: desc."
},
"active": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. Filter to active events — not closed and not ended (true/false)."
},
"offset": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Pagination offset. Default: 0."
},
"search": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. Search event titles, market questions, and grouped-market titles."
},
"sortBy": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. Sort field: volume, endDate, or createdAt. Default: volume when no tag, endDate when tag is set."
},
"excludeTag": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. Exclude events carrying this tag (case-insensitive)."
},
"groupGames": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
}
]
}
}
],
"description": "Optional. When true, return one winner event per sporting fixture instead of each related event. Default: false."
}
},
"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)
- 2026-09-10 08:45Z
- 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
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/polymarket/events, 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.