Agent Arcade: Reasoning Games
x402 Atlas provides real-time x402 analytics for autonomous APIs on Base. Track transactions, discover trends, and analyze the x402 ecosystem.
InferenceLiveeip155:8453Exactvia cdp
TriviaQuizDaily-challengeKnowledgeQuestion-answering
Calls · 30d
7↓ 2.0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$24.30
Verified settled volume
1,036 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
7
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-09-15 06:32Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2The 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"hint": "This endpoint requires x402 payment. The price and payment options are in the PAYMENT-REQUIRED response header (x402 v2). Pay with an x402 client, then retry to receive the data.",
"llms": "https://agent-arcade.use.x402atlas.com/llms.txt",
"error": "payment_required",
"price": "$0.005 per call",
"method": "GET",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"contact": {
"email": "support@x402atlas.com"
},
"openapi": "https://agent-arcade.use.x402atlas.com/openapi.json",
"resource": {
"url": "https://agent-arcade.use.x402atlas.com/trivia/daily",
"tags": [
"trivia",
"quiz",
"daily-challenge",
"knowledge",
"question-answering",
"agent-game"
],
"mimeType": "application/json",
"description": "Trivia Daily knowledge challenge — answer one deterministically selected and shuffled question from a curated local set.",
"serviceName": "Agent Arcade: Reasoning Games"
},
"x402Version": 2,
"documentation": "https://agent-arcade.use.x402atlas.com/docs"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x8C12…Df1b2. The signed payment is good for 5 minutes.
- Paid to
- 0x8C12…Df1b2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
5000units
on Polygon · 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
- 0x8C12…Df1b2
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
5000units
on Arbitrum · 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
- 0x8C12…Df1b2
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {
"date": "2026-07-01",
"game": "trivia",
"rules": {
"choice_count": 4,
"select_exactly_one": true
},
"prompt": {
"choices": [
{
"id": "choice_29cc90061e7560d3",
"text": "Quality Render"
},
{
"id": "choice_95fc0b2f4907eff7",
"text": "Quick Response"
},
{
"id": "choice_ebc2627946dd291d",
"text": "Query Record"
},
{
"id": "choice_f3a1c82862075ef8",
"text": "Queued Request"
}
],
"category": "computing",
"question": "What does the abbreviation QR stand for in QR code?",
"question_id": "computing-qr-expansion",
"answer_format": "opaque_choice_id"
},
"difficulty": "normal",
"attribution": {
"source": "x402 Atlas original curated trivia set",
"license": "CC0-1.0",
"snapshot_date": "2026-07-30",
"dataset_sha256": "a504122c837007646f667bea4a0ddc808df9b7094825621e1cbcbc8db6d93253",
"dataset_version": "atlas-trivia-v1"
},
"challenge_id": "sha256:c9365eb870ba7310a4c32503c8b72ff3c5dfebc66ab8ded6b562a6bd8a395709",
"generation_version": "v1"
}
}
},
"tags": [
"trivia",
"quiz",
"daily-challenge",
"knowledge",
"question-answering",
"agent-game"
],
"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"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {},
"description": "Trivia Daily takes no query parameters; it always returns today's UTC question.",
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"challenge_id",
"game",
"generation_version",
"date",
"difficulty",
"prompt",
"rules",
"attribution"
],
"properties": {
"date": {
"type": "string",
"format": "date",
"description": "UTC Trivia Daily challenge date."
},
"game": {
"enum": [
"trivia"
],
"type": "string",
"description": "Trivia Daily game identity."
},
"rules": {
"type": "object",
"required": [
"select_exactly_one",
"choice_count"
],
"properties": {
"choice_count": {
"enum": [
4
],
"type": "integer"
},
"select_exactly_one": {
"type": "boolean",
"const": true
}
},
"description": "Trivia Daily single-choice rules.",
"additionalProperties": false
},
"prompt": {
"type": "object",
"required": [
"question_id",
"question",
"category",
"choices",
"answer_format"
],
"properties": {
"choices": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"text"
],
"properties": {
"id": {
"type": "string",
"pattern": "^choice_[0-9a-f]{16}$",
"description": "Opaque Trivia Daily choice ID to submit."
},
"text": {
"type": "string",
"description": "Displayed answer text."
}
},
"description": "One Trivia Daily answer choice.",
"additionalProperties": false
},
"maxItems": 4,
"minItems": 4,
"description": "Four deterministically shuffled choices."
},
"category": {
"type": "string",
"description": "Trivia Daily knowledge category."
},
"question": {
"type": "string",
"description": "Trivia Daily question text."
},
"question_id": {
"type": "string",
"description": "Pinned Trivia Daily question identifier."
},
"answer_format": {
"enum": [
"opaque_choice_id"
],
"type": "string",
"description": "Submit exactly one displayed choice ID."
}
},
"description": "Trivia Daily question and four shuffled opaque choices.",
"additionalProperties": false
},
"difficulty": {
"enum": [
"normal"
],
"type": "string",
"description": "Trivia Daily challenge difficulty."
},
"attribution": {
"type": "object",
"required": [
"source",
"license",
"snapshot_date",
"dataset_version",
"dataset_sha256"
],
"properties": {
"source": {
"type": "string",
"description": "Trivia Daily question source."
},
"license": {
"type": "string",
"description": "Local dataset license."
},
"snapshot_date": {
"type": "string",
"format": "date",
"description": "Pinned Trivia Daily snapshot date."
},
"dataset_sha256": {
"type": "string",
"pattern": "^[0-9a-f]{64}$",
"description": "SHA-256 of the packaged Trivia Daily dataset."
},
"dataset_version": {
"type": "string",
"description": "Pinned Trivia Daily dataset version."
}
},
"description": "Trivia Daily local dataset provenance.",
"additionalProperties": false
},
"challenge_id": {
"type": "string",
"pattern": "^sha256:[0-9a-f]{64}$",
"description": "Canonical content-addressed Trivia Daily challenge identity."
},
"generation_version": {
"enum": [
"v1"
],
"type": "string",
"description": "Pinned Trivia Daily dataset-selection version."
}
},
"description": "Trivia Daily knowledge challenge envelope.",
"additionalProperties": false
}
}
}
}
},
"category": "games"
}
}Provenance
- Seen in the source catalog
- 2026-09-15 06:32Z
- Last indexed by Roundhouse
- 2026-09-24 08:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-13 00:45Z
- 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 Agent Arcade: Reasoning Games 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=Agent%20Arcade%3A%20Reasoning%20Games' 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://agent-arcade.use.x402atlas.com/trivia/daily, 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.