# Limitless Quote Trade

> 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

## Facts

- Endpoint: POST https://chat.sperax.io/api/x402/tools/limitless/quoteTrade?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitless-quote-trade-246c8411
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oSrOY9Pc9b2l-wgZ2KE3f

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability limitless-quote-trade-246c8411 -d '<json body>'
```

Example prompt: Give me a quote for spending $100 on the YES side of Limitless market 0xabc123, with 1% slippage tolerance — I want to see how many tokens I'd get before I commit.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "side": {
   "enum": [
    "yes",
    "no"
   ],
   "type": "string"
  },
  "preview": {
   "type": "boolean",
   "description": "If true, compute locally without an API roundtrip."
  },
  "marketId": {
   "type": "string"
  },
  "slippage": {
   "type": "number",
   "description": "Slippage tolerance fraction. Default 0.01."
  },
  "amountUsd": {
   "type": "number",
   "description": "USD amount to spend."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/limitless-quote-trade-246c8411/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)