# VAPE Prediction Market Odds

> VAPE Prediction Market Odds is a paid API for AI agents from vape-x402.vapex402.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns live market-implied probabilities from Polymarket and Kalshi for crypto/Base-relevant events, ranked by volume

## Facts

- Endpoint: GET https://vape-x402.vapex402.workers.dev/data/prediction_market_odds
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vape-prediction-market-odds-0cfc2f34
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6a6B2_0aBMNqybSet_zNq

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 vape-prediction-market-odds-0cfc2f34
```

Example prompt: Pull the top 10 prediction market odds from Polymarket and Kalshi right now — I want to see the market-implied probabilities on things like crypto hacks, stablecoin depegs, and price milestones, ranked by volume.

## When to prefer this

Choose this endpoint when you need live, crowd-sourced probability estimates on crypto-specific risk events (hacks, depegs, price milestones, protocol outcomes) aggregated from both Polymarket and Kalshi in a single call, ranked by volume. Prefer this over raw exchange data when you want market-implied probabilities rather than price feeds, and over building your own aggregator when you need a keyless, low-cost, ready-to-use prediction market summary.

## Known failure modes

- Upstream Polymarket or Kalshi API unavailable — returns empty or partial results
- limit parameter out of range — may return default count or error
- No active markets matching crypto/Base scope at query time — returns empty list
- Network timeout to workers.dev edge — transient 5xx error
- Payment of 0.01 USDC via x402 not processed — 402 Payment Required response

## How this service works

VAPE prediction_market_odds — Live crypto/Base-relevant prediction-market odds from Polymarket and Kalshi — market-implied probabilities on hacks, depegs, price thresholds, and protocol milestones, ranked by volume. Keyless, free-source data — no API key required either side.

## Output

A list of prediction market entries (up to `limit`, default 20) from Polymarket and Kalshi, each including the market question, market-implied probability, and trading volume, ranked by volume — covering crypto/Base-relevant events like hacks, depegs, price thresholds, and protocol milestones.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "limit": {
       "type": "number",
       "description": "max markets to return, default 20"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vape-prediction-market-odds-0cfc2f34/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vape-x402.vapex402.workers.dev](https://www.zero.xyz/host/vape-x402.vapex402.workers.dev/llms.txt)