# Vextorium Polymarket Events API

> Vextorium Polymarket Events API is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-29).

Retrieves Polymarket prediction market events with per-option probabilities, volume, and close dates — searchable or ranked by volume

## Facts

- Endpoint: POST https://api.vextorium.com/polymarket-eventos-pago?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-polymarket-events-api-fa9a105b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g_A4XdoPtH1SWJ5iqsuJg

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-events-api-fa9a105b -d '<json body>'
```

Example prompt: What are the top 10 Polymarket events by volume right now, including the probability for each option and when they close?

## When to prefer this

Use this endpoint when you need real-time prediction market probabilities and volumes from Polymarket across elections, Fed decisions, sports, and crypto events. Prefer it over manual Polymarket browsing when you need structured, machine-readable probability data for multiple events at once, or when building a dashboard or alert system around prediction market movements.

## Known failure modes

- No events found for a very specific or misspelled search query
- Polymarket data unavailable or stale if upstream API is down
- Rate limiting if called too frequently
- Empty markets array if an event has no active markets
- Invalid body type returns schema validation error

## How this service works

Polymarket events with all their markets: elections, Fed decisions, sports, crypto... Each event with the probability of every option (candidate, rate range, team), volume and close date; top by volume or matching a search.

## Output

Returns a list of Polymarket events, each containing the event name, slug, link, close date, number of markets, 24h and total volume in USD, and an array of market options with per-option slugs, probabilities (as percentages), and volume in USD. Also includes a source note and search term echo.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "buscar": {
   "type": "string"
  },
  "limite": {
   "type": "integer"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-polymarket-events-api-fa9a105b/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)