# BlockRun.AI Crypto Up/Down Prediction Markets List

> BlockRun.AI Crypto Up/Down Prediction Markets List is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Lists available cryptocurrency up/down prediction markets from Polymarket

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/pm/polymarket/crypto-updown
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-ai-9e33e157
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gABZI6lcK3kwLx4oWWpCZ

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 blockrun-ai-9e33e157
```

Example prompt: Show me all the crypto up/down prediction markets currently listed on Polymarket.

## When to prefer this

Use this endpoint when you need to discover or enumerate available cryptocurrency up/down binary outcome prediction markets from Polymarket. Prefer this over general crypto price feeds when you specifically want prediction market listings rather than spot prices.

## Known failure modes

- Empty response if no markets are currently listed
- 402 Payment Required if x402 micropayment header is missing or insufficient
- Service unavailable if Polymarket data feed is down
- Truncated response for very large market lists

## How this service works

List crypto up/down prediction markets

## Output

A list of crypto up/down prediction markets from Polymarket, including market metadata such as market identifiers, asset pairs, outcomes, and related data fields.

## Example request

```json
{
 "input": {
  "body": {}
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "query": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-ai-9e33e157/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)