uselayer.sh
Find the same prediction market on another venue (Kalshi, Polymarket, Polymarket US, Hyperliquid, Novig): its twin, how confident the match is, and both venues' live prices.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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": "Get a free key at https://uselayer.sh/dashboard and send it as authorization: Bearer lyr_…",
"error": "payment_required",
"detail": "Pay for this call with x402 (USDC on Base; the price is in the PAYMENT-REQUIRED header), or send a Layer API key."
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.02 USDC on Base to 0xdA52…1d3cF. The signed payment is good for 2 minutes.
- Paid to
- 0xdA52…1d3cF
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xdA52C1b9a109A107A4Ee36Dfe0A3c1368D21d3cF",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"venue": "polymarket_us",
"market_id": "aec-nba-lal-bos-2026-11-08"
}
},
"output": {
"type": "json",
"example": {
"side": "same",
"tier": "human_verified",
"prices": {
"as_of": "2026-11-07T18:00:00Z",
"kalshi": {
"yes": {
"ask": {
"size": 120,
"price": 0.42
},
"bid": {
"size": 300,
"price": 0.41
}
}
},
"polymarket_us": {
"yes": {
"ask": {
"size": 200,
"price": 0.44
},
"bid": {
"size": 80,
"price": 0.43
}
}
}
},
"checked_at": "2026-11-07T18:00:00Z",
"confidence": 1,
"source_market": {
"venue": "polymarket_us",
"market_id": "aec-nba-lal-bos-2026-11-08"
},
"matched_market": {
"venue": "kalshi",
"market_id": "KXNBAGAME-26NOV08LALBOS-LAL"
}
}
}
},
"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",
"required": [
"venue",
"market_id"
],
"properties": {
"with": {
"type": "string",
"description": "For a Kalshi market: which venue to find its twin on"
},
"venue": {
"enum": [
"kalshi",
"polymarket",
"polymarket_us",
"hyperliquid",
"novig"
],
"type": "string"
},
"prices": {
"enum": [
"true",
"false"
],
"type": "string"
},
"market_id": {
"type": "string",
"description": "The market's id on that venue (Kalshi ticker, Polymarket conditionId or slug, ...)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-11-08 21:18Z
- Last indexed by Roundhouse
- 2026-11-09 08:30Z
- Last enriched (probe, favicon, geo)
- 2026-11-08 01:45Z
- x402 version
- 2
- Max timeout
- 120s
- 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
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 uselayer.sh 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=uselayer.sh' 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://uselayer.sh/v0/match, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.