# SiteCheck Panta Market Buy Quote

> SiteCheck Panta Market Buy Quote is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).

Returns a simulated quote (expected shares, average fill price, fee, and price impact) for a YES or NO buy on a Panta prediction market for a given USDC amount — without signing or submitting any transaction.

## Facts

- Endpoint: POST https://api.sitecheck-api.workers.dev/api/markets/quote?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-panta-market-buy-quote-0c269d67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XVp4_PyvG4KG9r4qbwWw_

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 sitecheck-panta-market-buy-quote-0c269d67 -d '<json body>'
```

Example prompt: Can you give me a quote for buying YES on Panta market ABc123...XYZ (base58 address) using my wallet 7xK...mNp and spending 25 USDC — show me the expected shares, average fill price, fee, and price impact?

## When to prefer this

Use this endpoint when an agent or user wants to preview the economics of a Panta prediction market trade — expected shares, fill price, fee, and slippage — without executing or signing anything. Prefer this over live execution endpoints when validating trade parameters, comparing buy sides, or building pre-trade confirmation UX. It is read-only and safe to call repeatedly.

## Known failure modes

- Invalid or unknown market ID returns an error (market not found)
- Invalid base58 wallet address causes a validation error
- amountUsdc of zero or negative value rejected
- side value other than 'yes' or 'no' rejected
- Insufficient liquidity in the market may result in an error or extreme price impact warning
- Network or worker timeout for slow market data fetches

## How this service works

Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment. Plus prediction-market search, briefs, quotes and unsigned buy transactions, powered by Panta. Payment: x402, USDC on Base, Solana or Arc. No signup, no API key.

## Output

Returns a quote object with: expected number of shares received, average fill price per share, total fee charged, and price impact as a percentage deviation from the current spot price — all computed off-chain with no transaction submitted.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": "string",
   "description": "Panta market id (the market's event address, base58), from GET /api/markets"
  },
  "side": {
   "type": "string",
   "description": "yes or no"
  },
  "wallet": {
   "type": "string",
   "description": "The buyer's Solana wallet (base58). It pays and signs; SiteCheck never does."
  },
  "amountUsdc": {
   "type": "string",
   "description": "USDC to spend, as a decimal string, e.g. \"5.00\""
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spotPrice": 0.31,
  "disclaimer": "Information only, not financial advice.",
  "priceImpact": 0.021,
  "expectedFill": {
   "shares": 15.8,
   "feeUsdc": 0.1,
   "avgPrice": 0.3165
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-panta-market-buy-quote-0c269d67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)