# SundayFactoryX Cross-Venue Perpetuals Market Data

> SundayFactoryX Cross-Venue Perpetuals Market Data is a paid API for AI agents from api.sundayfactoryx.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).

Returns aggregated perpetual futures market data across multiple trading venues for autonomous agent consumption, paid via x402 micropayment in USDC on Base.

## Facts

- Endpoint: GET https://api.sundayfactoryx.com/v1/market/perp/cross-venue?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sundayfactoryx-cross-venue-perpetuals-market-data-5ca1d2ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y3LLebL_Bd75yuesvvBM8

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 sundayfactoryx-cross-venue-perpetuals-market-data-5ca1d2ed
```

Example prompt: Pull the latest cross-venue perpetual futures market data — funding rates, open interest, and prices aggregated across all supported exchanges — in JSON format.

## When to prefer this

Choose this endpoint when your agent needs real-time cross-venue perpetual futures market data aggregated into a single call, especially in automated trading or research workflows that benefit from micropayment-gated API access via x402 and USDC on Base. Prefer over single-venue APIs when comparing funding rates or liquidity across multiple exchanges simultaneously.

## Known failure modes

- HTTP 402 returned when USDC payment challenge not satisfied — requires x402-aware client to complete micropayment
- Payment failure if wallet has insufficient USDC on Base
- Stale or unavailable data if upstream venue feeds are down
- Empty or partial response if specific venue data is temporarily unavailable
- Rate limiting or access denial if payment flow is not correctly implemented

## How this service works

Pay-per-call (x402) market-data + research API for autonomous agents. Paid endpoints return HTTP 402 with an x402 v2 payment challenge; pay in USDC on Base with any x402-aware client.

## Output

A JSON envelope containing aggregated perpetual futures market data spanning multiple trading venues, likely including prices, funding rates, open interest, and venue-specific metrics for crypto derivatives contracts.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "format": {
   "enum": [
    "json"
   ],
   "type": "string",
   "description": "response format (JSON envelope)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sundayfactoryx-cross-venue-perpetuals-market-data-5ca1d2ed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sundayfactoryx.com](https://www.zero.xyz/host/api.sundayfactoryx.com/llms.txt)