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CoinOpSelect Intent Quote API
x402
CoinOpSelect Intent Quote API is a paid API for AI agents from coinop.publicvm.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).
Returns a fill quote and query result for a token swap intent, given buy/sell token symbols and pricing parameters, paid via x402 on Base.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid on-chain token, wallet, contract and research data over x402 on Base.
Output
Returns a JSON object containing a 'fill' object with swap quote details and a 'query' string confirming the intent type ('intent-quote'). The fill object contains the computed result of the swap intent including pricing and execution data.
Example use cases
Token swap price check before trade
“Can you pull a quote for swapping USDC to WETH on CoinOpSelect? I want to see the fill with a fill price of 3200 and a limit price of 3250 before I commit to the trade.”
DeFi limit order cost estimation
“I'm planning a limit order to buy cbETH with USDC — can you get me the intent quote from CoinOpSelect with a limit price of 2400 and fill price of 2380 so I can see what I'd get?”
Arbitrage opportunity evaluation
“Check the CoinOpSelect intent quote for selling DAI and buying ARB at a fill price of 1.05 and limit price of 1.10 — I want to see if the fill looks favorable before I execute.”
Technical details
Endpoint
GEThttps://coinop.publicvm.com/api/v1/intent/quote?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need an on-chain intent-based swap quote specifically on Base, paid per-call via x402 micropayments in USDC. Prefer this over general DEX aggregators when you want programmatic, agent-friendly quote retrieval with minimal overhead and pay-as-you-go pricing without API key management.
Side effects
- Missing required 'type' or 'method' fields in input object returns a 400 validation error
- Invalid or unsupported token symbols for buy/sell may return empty fill or error
- Payment not received via x402 (HTTP 402) blocks access to the endpoint
- Fill price or limit price formatted as non-numeric string may cause computation error
- Network or blockchain data unavailability may cause delayed or failed quote responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"fill": {},
"query": "intent-quote"
}
}Tags
x402
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