# StealthGuard Polymarket Crypto Odds

> StealthGuard Polymarket Crypto Odds is a paid API for AI agents from stealthguard-402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Returns sanitized BTC, ETH, and SOL probability spreads and liquidity depth from Polymarket, expressed in basis points, pre-screened for injection safety.

## Facts

- Endpoint: POST https://stealthguard-402.onrender.com/v1/alpha/polymarket-crypto-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stealthguard-polymarket-crypto-odds-798f83e9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_arC_CPj6QftvWN5AZvHJ4

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 stealthguard-polymarket-crypto-odds-798f83e9 -d '<json body>'
```

Example prompt: Pull the latest sanitized Polymarket probability spreads and liquidity depth in basis points for BTC, ETH, and SOL so I can see where the market is pricing each coin right now.

## When to prefer this

Choose this endpoint when your AI agent needs real-time Polymarket probability data for BTC, ETH, or SOL that is already sanitized and safe to inject into an agent context window. Prefer it over raw Polymarket API calls when you need injection-scrubbed data, or over generic market data feeds when you specifically want prediction-market probabilities (not spot prices) expressed in basis points with liquidity depth.

## Known failure modes

- Polymarket CLOB API unavailable — upstream data fetch fails
- No active markets found for requested crypto asset
- Payment authorization failure via x402 protocol
- Malformed POST body or missing required fields returns validation error
- Rate limiting if called too frequently without valid payment

## How this service works

Sanitized BTC, ETH, and SOL Polymarket probability spreads and liquidity depth in basis points.

## Output

Returns sanitized probability spreads and liquidity depth for BTC, ETH, and SOL Polymarket markets, expressed in basis points. Data is pre-screened by CanaryGuard for prompt injection and wallet-drainer content, making it safe for direct ingestion into AI agent context windows.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asset": {
   "type": "string",
   "default": "BTC",
   "description": "Crypto asset symbol (BTC, ETH, SOL)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stealthguard-polymarket-crypto-odds-798f83e9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stealthguard-402.onrender.com](https://www.zero.xyz/host/stealthguard-402.onrender.com/llms.txt)