# Joe Market Data – Polymarket Crypto Markets

> Joe Market Data – Polymarket Crypto Markets is a paid API for AI agents from joe-market-data.marnick-yezo.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns current Polymarket prediction market questions and odds for cryptocurrency-related markets

## Facts

- Endpoint: GET https://joe-market-data.marnick-yezo.workers.dev/pm-crypto
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/joe-market-data-polymarket-crypto-markets-0ab9bb23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aIsT1m8bJKhp7tH_z4-ok

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 joe-market-data-polymarket-crypto-markets-0ab9bb23
```

Example prompt: What are the current Polymarket prediction market odds for cryptocurrency questions — things like whether Bitcoin will hit 100k?

## When to prefer this

Choose this endpoint when you need real-time prediction market sentiment and odds specifically for cryptocurrency-related questions from Polymarket, as part of a broader market intelligence stack. Prefer it over general crypto price feeds when you want crowd-sourced probability estimates on future events (e.g., 'will BTC hit 100k?') rather than spot prices. It is especially useful for AI agents needing lightweight, micropayment-gated access to Polymarket crypto data without managing a full Polymarket API integration.

## Known failure modes

- Payment not received: returns HTTP 402 if USDC micropayment on Base is not completed
- Polymarket API unavailable: upstream data source may be down causing empty or error response
- No active markets: data array may return empty if no crypto markets are currently live
- Malformed response: odds array may be empty for some markets if pricing data is not available

## How this service works

Public-data market intel for AI agents: token prices (CoinGecko), DefiLlama TVL/fees/stables, Polymarket odds. Otto-compatible path names. $0.001 USDC per call on Base. No LLM/TTS/image.

## Output

Returns a JSON object with status 'success', a meta block showing the data source ('polymarket'), the endpoint path, and the cost per call ($0.001 USDC), plus a data block containing a count of active crypto prediction markets and an array of market objects each with a question string and an odds array.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "count": 10,
   "markets": [
    {
     "odds": [],
     "question": "Bitcoin above 100k?"
    }
   ]
  },
  "meta": {
   "source": "polymarket",
   "endpoint": "/pm-crypto",
   "cost_usdc": "0.001"
  },
  "status": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/joe-market-data-polymarket-crypto-markets-0ab9bb23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from joe-market-data.marnick-yezo.workers.dev](https://www.zero.xyz/host/joe-market-data.marnick-yezo.workers.dev/llms.txt)