# NetIntel Prediction Markets API

> NetIntel Prediction Markets API is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Search and browse active or closed prediction markets from Polymarket, returning questions, outcome probabilities, and trading volumes

## Facts

- Endpoint: GET https://netintel-production-440c.up.railway.app/prediction/markets
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/netintel-prediction-markets-api-54110208
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KunX7MGwrfZ0LBXRVaCUO

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 netintel-prediction-markets-api-54110208
```

Example prompt: What do prediction markets say about Bitcoin reaching $100k this year? Show me up to 10 active markets and their current odds.

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for future events, especially crypto, politics, or macroeconomic outcomes. It is ideal for agents that need to surface implied market odds rather than compute them. Prefer this over general web search when you want structured, quantified probability data with volume signals from Polymarket's order book.

## Known failure modes

- Invalid status value — returns finding 'invalid_status' and falls back to default
- No markets found for keyword — returns empty markets array with 'no_results' finding
- Limit out of range — clamped to 1–50 with 'limit_clamped' finding
- Upstream Polymarket API failure — no charge applied per NetIntel policy
- Network timeout from upstream data source

## How this service works

Network intelligence API — 138 endpoints, all pay-per-call via x402 micropayments (USDC on Base or Solana mainnet).

NetIntel is agent fair-trade aligned: transparent per-call pricing in USDC on Base or Solana via x402, no API keys or signup, and automatic no-charge on server errors, upstream failures, and input-validation rejections — failed calls are never billed across NetIntel's network, domain, and data-intelligence endpoints.

## Output

Returns an array of prediction market objects from Polymarket, each containing the market question, a URL, outcome names with implied probabilities (0–1 scale where 0.55 = 55% chance), lifetime and 24-hour USD trading volumes, liquidity, resolution date, category, and active/closed status. Also includes the effective query echo, count, source, and any findings flags (e.g. no_results, limit_clamped).

## 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",
     "properties": {
      "limit": {
       "type": "number",
       "description": "Max markets to return, 1..50 (default 20). Aliases: count, n"
      },
      "query": {
       "type": "string",
       "description": "Keyword search, e.g. \"election\" or \"bitcoin\". Aliases: q, search, keyword. Omit to list the top active markets by volume"
      },
      "status": {
       "type": "string",
       "description": "active (default), closed, or all. Alias: state"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "count": {
       "type": "number"
      },
      "query": {
       "type": [
        "string",
        "null"
       ],
       "description": "echoed keyword; null when browsing top markets"
      },
      "source": {
       "type": "string"
      },
      "status": {
       "type": "string",
       "description": "effective filter: active, closed, or all"
      },
      "markets": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "id": {
          "type": "string"
         },
         "url": {
          "type": [
           "string",
           "null"
          ]
         },
         "slug": {
          "type": [
           "string",
           "null"
          ]
         },
         "active": {
          "type": "boolean"
         },
         "closed": {
          "type": "boolean",
          "description": "true once resolved/closed (active may still be true)"
         },
         "category": {
          "type": [
           "string",
           "null"
          ]
         },
         "end_date": {
          "type": [
           "string",
           "null"
          ],
          "description": "ISO 8601 resolution/close date"
         },
         "outcomes": {
          "type": "array",
          "description": "each {outcome, price}; price is the IMPLIED PROBABILITY 0..1
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 2,
  "query": "bitcoin",
  "source": "polymarket",
  "status": "active",
  "markets": [
   {
    "id": "3257332",
    "url": "https://polymarket.com/market/will-bitcoin-reach-100k-in-august-2026",
    "slug": "will-bitcoin-reach-100k-in-august-2026",
    "active": true,
    "closed": false,
    "category": "Crypto",
    "end_date": "2026-09-01T04:00:00Z",
    "outcomes": [
     {
      "price": 0.0005,
      "outcome": "Yes"
     },
     {
      "price": 0.9995,
      "outcome": "No"
     }
    ],
    "question": "Will Bitcoin reach $100,000 in August?",
    "volume_usd": 3088033.25,
    "liquidity_usd": 220656.48,
    "volume_24h_usd": 39531.94
   },
   {
    "id": "3257334",
    "url": "https://polymarket.com/market/will-bitcoin-reach-85k-in-august-2026",
    "slug": "will-bitcoin-reach-85k-in-august-2026",
    "active": true,
    "closed": false,
    "category": "Crypto",
    "end_date": "2026-09-01T04:00:00Z",
    "outcomes": [
     {
      "price": 0.0005,
      "outcome": "Yes"
     },
     {
      "price": 0.9995,
      "outcome": "No"
     }
    ],
    "question": "Will Bitcoin reach $85,000 in August?",
    "volume_usd": 1674348.63,
    "liquidity_usd": 122917.85,
    "volume_24h_usd": 194808.39
   }
  ],
  "findings": [],
  "cache_age_seconds": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/netintel-prediction-markets-api-54110208/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from netintel-production-440c.up.railway.app](https://www.zero.xyz/host/netintel-production-440c.up.railway.app/llms.txt)