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
Shortest-pathGraphDijkstraPathfindingOptimization
Calls · 30d
5→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$24.55
Verified settled volume
1,041 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.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
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/shortest-path/daily",
"tags": [
"shortest-path",
"graph",
"dijkstra",
"pathfinding",
"optimization",
"reasoning",
"daily-challenge"
],
"mimeType": "application/json",
"description": "Shortest Path daily graph — find the unique minimum-weight route in a deterministic directed or undirected graph.",
"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": "shortest-path",
"rules": {
"objective": "minimum total edge weight",
"edge_weights": "positive bounded integers",
"answer_format": "ordered node ID path including source and target",
"direction_rule": "follow prompt.directed: traverse from→to only when true; either direction when false",
"maximum_path_nodes": 128,
"repeated_nodes_allowed": true,
"respect_edge_direction": false
},
"prompt": {
"edges": [
{
"to": "n1",
"from": "n0",
"weight": 16
},
{
"to": "n2",
"from": "n1",
"weight": 23
},
{
"to": "n3",
"from": "n2",
"weight": 17
},
{
"to": "n4",
"from": "n3",
"weight": 16
},
{
"to": "n5",
"from": "n4",
"weight": 23
},
{
"to": "n6",
"from": "n5",
"weight": 17
},
{
"to": "n7",
"from": "n6",
"weight": 8
},
{
"to": "n8",
"from": "n7",
"weight": 12
},
{
"to": "n9",
"from": "n8",
"weight": 25
},
{
"to": "n3",
"from": "n0",
"weight": 23
},
{
"to": "n5",
"from": "n0",
"weight": 5
},
{
"to": "n5",
"from": "n1",
"weight": 21
},
{
"to": "n6",
"from": "n2",
"weight": 18
},
{
"to": "n9",
"from": "n4",
"weight": 1
},
{
"to": "n7",
"from": "n5",
"weight": 19
}
],
"nodes": [
"n0",
"n1",
"n2",
"n3",
"n4",
"n5",
"n6",
"n7",
"n8",
"n9"
],
"source": "n0",
"target": "n9",
"directed": false
},
"difficulty": "normal",
"attribution": null,
"challenge_id": "sha256:2327bbbb5e218df601ce68447330b65d4fbf072a22a2493cba93085eb832f3f1",
"generation_version": "v1"
}
}
},
"tags": [
"shortest-path",
"graph",
"dijkstra",
"pathfinding",
"optimization",
"reasoning",
"daily-challenge"
],
"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": "Shortest Path daily takes no query parameters; it always returns today's UTC graph.",
"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 Shortest Path challenge date."
},
"game": {
"enum": [
"shortest-path"
],
"type": "string",
"description": "Shortest Path game identity."
},
"rules": {
"type": "object",
"required": [
"answer_format",
"edge_weights",
"respect_edge_direction",
"direction_rule",
"repeated_nodes_allowed",
"objective",
"maximum_path_nodes"
],
"properties": {
"objective": {
"type": "string"
},
"edge_weights": {
"type": "string"
},
"answer_format": {
"type": "string"
},
"direction_rule": {
"type": "string"
},
"maximum_path_nodes": {
"enum": [
128
],
"type": "integer"
},
"repeated_nodes_allowed": {
"type": "boolean",
"const": true
},
"respect_edge_direction": {
"type": "boolean"
}
},
"description": "Complete Shortest Path v1 direction, weight, and optimality rules.",
"additionalProperties": false
},
"prompt": {
"type": "object",
"required": [
"directed",
"nodes",
"edges",
"source",
"target"
],
"properties": {
"edges": {
"type": "array",
"items": {
"type": "object",
"required": [
"from",
"to",
"weight"
],
"properties": {
"to": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]+$",
"maxLength": 32,
"minLength": 1
},
"from": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]+$",
"maxLength": 32,
"minLength": 1
},
"weight": {
"type": "integer",
"maximum": 100,
"minimum": 1
}
},
"description": "One declared Shortest Path weighted edge.",
"additionalProperties": false
},
"maxItems": 256,
"minItems": 1
},
"nodes": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]+$",
"maxLength": 32,
"minLength": 1
},
"maxItems": 64,
"minItems": 2,
"uniqueItems": true
},
"source": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]+$",
"maxLength": 32,
"minLength": 1
},
"target": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]+$",
"maxLength": 32,
"minLength": 1
},
"directed": {
"type": "boolean"
}
},
"description": "Shortest Path bounded weighted graph, source, and target.",
"additionalProperties": false
},
"difficulty": {
"enum": [
"normal"
],
"type": "string",
"description": "Shortest Path challenge difficulty."
},
"attribution": {
"type": "null",
"description": "Always null because Shortest Path is natively generated."
},
"challenge_id": {
"type": "string",
"pattern": "^sha256:[0-9a-f]{64}$",
"description": "Canonical content-addressed Shortest Path challenge identity."
},
"generation_version": {
"enum": [
"v1"
],
"type": "string",
"description": "Pinned Shortest Path generator version."
}
},
"description": "Shortest Path daily weighted-graph challenge envelope.",
"additionalProperties": false
}
}
}
}
},
"category": "games"
}
}Provenance
- Seen in the source catalog
- 2026-09-15 06:32Z
- Last indexed by Roundhouse
- 2026-09-25 13:30Z
- 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/shortest-path/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.