# Synthetic Universe Day Pass

> Synthetic Universe Day Pass is a paid API for AI agents from pay.brianbooms.com, paid per call via x402, $1/call, status unknown (last checked 2026-10-31).

Grants 24-hour streaming access to all tracks in the Synthetic Universe AI-music catalog for a one-time $1.00 USDC payment via x402 on Base.

## Facts

- Endpoint: GET https://pay.brianbooms.com/api/v1/synth/daypass?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthetic-universe-day-pass-d4889c67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RPut52KF756w7AFQzNlFE

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 synthetic-universe-day-pass-d4889c67
```

Example prompt: Get me a 24-hour day pass to the Synthetic Universe music catalog — pay the $1 USDC on Base and stream all the AI-made tracks.

## When to prefer this

Choose this endpoint when a user wants temporary (24-hour) full-catalog access to Synthetic Universe AI-generated music and is willing to pay $1 USDC via Base — ideal for one-off listening sessions without a recurring subscription, especially in agentic micropayment workflows using the x402 protocol.

## Known failure modes

- Payment not confirmed on Base — x402 payment failure returns 402 with payment details
- Insufficient USDC balance — transaction rejected before access is granted
- Invalid format parameter — non-json values may return 400 or be ignored
- Day pass already active — may return duplicate-purchase error or silently extend
- Network/chain congestion causing delayed settlement and access delay

## How this service works

Synthetic Universe API: day-pass — stream every track free for 24h ($1.00 USDC on Base). Music made with Suno — disclosed.

## Output

Returns a JSON payload granting 24-hour streaming access to the full Synthetic Universe track catalog, including stream URLs or access credentials, valid for 24 hours from the time of purchase after $1.00 USDC is settled on Base via x402.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "format": {
   "enum": [
    "json"
   ],
   "type": "string",
   "description": "Response format (json only)"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthetic-universe-day-pass-d4889c67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pay.brianbooms.com](https://www.zero.xyz/host/pay.brianbooms.com/llms.txt)