x402-solvers
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MediaLiveeip155:8453Exactvia cdp
DefiArbitrageTradingSignal
Calls · 30d
4↑ 17%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$0.009
Verified settled volume
9 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-09-14 19:47Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA238AF2e66D9d7301F2D02932931851DdF900DcdThe 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.
0.001USDC≈ $0.001 USD
on Base · exact scheme
Pay 0.001 USDC on Base to 0xA238…00Dcd. The signed payment is good for 30 seconds.
- Paid to
- 0xA238…00Dcd
- USD Coin contract
- 0x8335…02913
- Payment window
- 30 seconds
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xA238AF2e66D9d7301F2D02932931851DdF900Dcd",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 30
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"edges": [
{
"to": "WETH",
"dex": "aerodrome",
"fee": 0.0005,
"from": "USDC",
"rate": 0.00031
},
{
"to": "USDC",
"dex": "uniswap",
"fee": 0.0005,
"from": "WETH",
"rate": 3300
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"hops": 3,
"tier": "probe",
"hasArbitrage": true,
"profitBucket": ">2%",
"edgesEvaluated": 3,
"nodesEvaluated": 3
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"edges"
],
"properties": {
"edges": {
"type": "array",
"items": {
"type": "object",
"required": [
"from",
"to",
"rate"
],
"properties": {
"to": {
"type": "string",
"description": "Destination token symbol."
},
"dex": {
"type": "string",
"description": "Venue label; echoed back untouched."
},
"fee": {
"type": "number",
"minimum": 0,
"description": "Fractional swap fee, e.g. 0.003 for 0.30%. Defaults to 0.",
"exclusiveMaximum": 1
},
"from": {
"type": "string",
"description": "Source token symbol."
},
"pool": {
"type": "string",
"description": "Pool address; echoed back untouched."
},
"rate": {
"type": "number",
"description": "Units of `to` per 1 unit of `from`, BEFORE fees.",
"exclusiveMinimum": 0
}
}
},
"minItems": 1,
"description": "Directed exchange-rate edges describing a token swap graph. Supply the rates you observed; the server makes no RPC calls of its own."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"hops": {
"type": "number",
"description": "Swaps in the detected cycle (0 if none)."
},
"tier": {
"const": "probe"
},
"hasArbitrage": {
"type": "boolean",
"description": "True if a profitable round-trip cycle exists."
},
"profitBucket": {
"enum": [
"none",
"<=0.1%",
"0.1-0.5%",
"0.5-2%",
">2%"
],
"type": "string",
"description": "Coarse magnitude of the best cycle gross profit."
},
"edgesEvaluated": {
"type": "number"
},
"nodesEvaluated": {
"type": "number"
}
},
"description": "Fast arbitrage-existence signal for a token swap graph: whether a profitable negative cycle exists and roughly how big, WITHOUT revealing the cycle path (that is the report tier)."
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-14 19:47Z
- Last indexed by Roundhouse
- 2026-09-24 09:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 11:45Z
- x402 version
- 2
- Max timeout
- 30s
- Liveness probe
- HTTP 404
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 x402-solvers 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=x402-solvers' 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://x402-solvers.onrender.com/v1/cycles/probe, 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.