DEX Data & Agent Utilities
Cross-DEX price, liquidity and gross arbitrage spread for ONE BSC pair in a single call, across PancakeSwap v2/v3, Biswap and ApeSwap. Returns pricesByVenue[], bestBuy, bestSell, midSpreadBps, crossDex (grossSpreadBps, grossUsd, optimalInput) and liquidity at a stated blockNumber. Requires ?pair=SYM/SYM (first symbol is USD-priceable); optional ?fee= pins one v3 tier. Errors: 400 bad_pair|bad_fee, 404 no_pools, 502 upstream_read_failed. Split views: /price, /liquidity, /route.
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.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2740651e046c59aB2A6510401140643292d3a96F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402.donnyautomation.com/call",
"tags": [
"cross-dex",
"spread",
"arbitrage",
"onchain",
"bsc"
],
"iconUrl": "https://raw.githubusercontent.com/donnywin85/dex-data-mcp/a2a1bfa6a46996e28d58398d52a089622d4ec293/logo.svg",
"mimeType": "application/json",
"description": "Cross-DEX price, liquidity and gross arbitrage spread for ONE BSC pair in a single call, across PancakeSwap v2/v3, Biswap and ApeSwap. Returns pricesByVenue[], bestBuy, bestSell, midSpreadBps, crossDex (grossSpreadBps, grossUsd, optimalInput) and liquidity at a stated blockNumber. Requires ?pair=SYM/SYM (first symbol is USD-priceable); optional ?fee= pins one v3 tier. Errors: 400 bad_pair|bad_fee, 404 no_pools, 502 upstream_read_failed. Split views: /price, /liquidity, /route.",
"serviceName": "DEX Data & Agent Utilities"
},
"x402Version": 2
}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 0.01 USDC on Base to 0x2740…3a96F. The signed payment is good for 5 minutes.
- Paid to
- 0x2740…3a96F
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2740651e046c59aB2A6510401140643292d3a96F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"pair": "WBNB/USDC"
}
},
"output": {
"type": "json",
"example": {
"ts": "2026-07-01T00:00:00.000Z",
"pair": "WBNB/USDC",
"source": "rpc",
"bestBuy": {
"price": 546.2,
"venue": "pancakeV3:500"
},
"chainId": 56,
"network": "bsc",
"bestSell": {
"price": 546.9,
"venue": "pancake"
},
"crossDex": {
"surface": "v2v3",
"buyVenue": "pancakeV3:500",
"grossUsd": 3.2,
"sellVenue": "pancake",
"optimalInput": {
"usd": 1148,
"token": "WBNB",
"amount": 2.1
},
"grossSpreadBps": 14.05,
"tickBoundaryBreach": false
},
"liquidity": {
"venues": 7,
"totalTvlUsd": 9800000
},
"nativeUsd": 546.6,
"blockNumber": 107399076,
"midSpreadBps": 27.4,
"pricesByVenue": [
{
"price": 546.6,
"venue": "pancake",
"feeBps": 25,
"tvlUsd": 1348000,
"surface": "v2"
},
{
"price": 546.2,
"venue": "pancakeV3:500",
"feeBps": 5,
"tvlUsd": 2100000,
"surface": "v3"
}
]
}
}
},
"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": [
"pair"
],
"properties": {
"fee": {
"type": "string",
"description": "Optional PancakeSwap v3 fee tier to restrict the v3 probe (e.g. 100, 500, 2500, 10000). Omit to probe all v3 tiers + v2."
},
"pair": {
"type": "string",
"description": "Token pair as SYM/SYM; first symbol is the USD-priceable side (e.g. WBNB/USDC, WBNB/USDT, CAKE/WBNB)."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-02 02:38Z
- Last indexed by Roundhouse
- 2026-09-25 10:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 19:15Z
- 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 DEX Data & Agent Utilities 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=DEX%20Data%20%26%20Agent%20Utilities' 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.donnyautomation.com/call, 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.