# Vextorium Polymarket Crypto Odds

> Vextorium Polymarket Crypto Odds is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-15).

Fetches implied probability distributions for crypto asset price levels from Polymarket prediction markets

## Facts

- Endpoint: POST https://api.vextorium.com/v1/polymarket-crypto-odds?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-polymarket-crypto-odds-895e40b5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LEuRP-rM4E4UfBmJWt-vd

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 vextorium-polymarket-crypto-odds-895e40b5 -d '<json body>'
```

Example prompt: What does Polymarket currently imply as the probability that Bitcoin will be above various price levels in upcoming events? Pull the full list of events and levels with their odds.

## When to prefer this

Use this endpoint when you need crowd-sourced, market-implied probability distributions for specific crypto asset price levels — particularly when you want Polymarket's event-based odds rather than traditional options-derived implied volatility. Ideal for gauging prediction market sentiment, comparing market-implied probabilities to model estimates, or research into crowd wisdom on crypto price targets. Not suitable for real-time price feeds or historical price data.

## Known failure modes

- Unsupported asset name returns empty or error response
- Polymarket may have no active events for a given asset at query time, returning an empty events array
- Stale or illiquid markets may produce wide spreads and unreliable implied medians
- Network timeout if Polymarket data source is temporarily unavailable

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

Returns a JSON object containing the queried asset name, a note about data interpretation, and an array of prediction market events. Each event includes the event description (e.g. 'Bitcoin above ___ on October 3?'), a close timestamp, an array of price levels with their associated probability-of-being-above percentages, and an approximate implied median price derived from the market.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asset": {
   "type": "string",
   "description": "bitcoin, ethereum, solana, xrp"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Probabilities implied by the market; they are not guaranteed predictions. Source: Polymarket.",
  "asset": "bitcoin",
  "events": [
   {
    "close": "2026-10-02T21:00:00Z",
    "event": "Bitcoin above ___ on October 2, 5PM ET?",
    "levels": [
     {
      "level": 82200,
      "prob_above_pct": 50
     },
     {
      "level": 82400,
      "prob_above_pct": 50
     }
    ],
    "implied_median_approx": 82200
   },
   {
    "close": "2026-10-03T16:00:00Z",
    "event": "Bitcoin above ___ on October 3?",
    "levels": [
     {
      "level": 74000,
      "prob_above_pct": 99.95
     },
     {
      "level": 76000,
      "prob_above_pct": 99.9
     }
    ],
    "implied_median_approx": 86000
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-polymarket-crypto-odds-895e40b5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)