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Limitless Quote Trade
x402
Limitless Quote Trade is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).
Returns a price quote for buying a YES or NO position on a Limitless prediction market, given a market ID, USD amount, and slippage tolerance
Price / call$0.001
Success—
StatusUnknown
How this service works
AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.
Output
Returns a computed trade quote including expected token output amount, effective price per share, price impact percentage, and total cost after slippage adjustment for the specified YES/NO position on the given Limitless prediction market.
Example use cases
Preview prediction market position cost
“Before I place any trade, can you preview how many YES tokens I'd get for $50 on Limitless market 0xdef456? Use a 0.5% slippage tolerance and just compute it locally without hitting the API.”
Compare YES vs NO quote pricing
“Quote me both a YES and a NO position on Limitless market 0xabc789 for $200 each with default slippage — I want to see which side gives me better value right now.”
Check slippage impact on large trade
“I'm thinking of putting $1000 on the NO side of Limitless market 0x123abc — can you get me a quote with 2% slippage tolerance so I can see how bad the price impact is?”
Technical details
Endpoint
POSThttps://chat.sperax.io/api/x402/tools/limitless/quoteTrade?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to price a prediction market trade on the Limitless protocol before execution — specifically to check token output, price impact, and slippage before committing capital. Prefer this over generic DeFi swap quote APIs when the user is specifically dealing with Limitless binary outcome markets.
Side effects
- Invalid or non-existent marketId returns a 404 or error response
- amountUsd of zero or negative value causes a validation error
- Side enum value outside 'yes'/'no' causes schema rejection
- Market is resolved or closed — quote unavailable
- Slippage tolerance set too low may result in quote marked as infeasible
- x402 payment failure if USDC balance is insufficient on Base
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| side | string | |
| preview | boolean | If true, compute locally without an API roundtrip. |
| marketId | string | |
| slippage | number | Slippage tolerance fraction. Default 0.01. |
| amountUsd | number | USD amount to spend. |
Tags
x402
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