# Laevitas Premium Monthly Subscription Purchase

> Laevitas Premium Monthly Subscription Purchase is a paid API for AI agents from apiv2.laevitas.ch, paid per call via x402, $50/call, status unknown (last checked 2026-10-27).

Purchases a monthly Premium subscription to Laevitas API V2 using USDC via x402 pay-per-request protocol

## Facts

- Endpoint: POST https://apiv2.laevitas.ch/api/v1/x402/subscriptions/purchase/premium/monthly?utm_source=zero.xyz
- Price: $50/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/laevitas-premium-monthly-subscription-purchase-808df766
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u0rVlKeNMXxPnTMpWejBu

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 laevitas-premium-monthly-subscription-purchase-808df766 -d '<json body>'
```

Example prompt: I want to activate a monthly Premium subscription on Laevitas — I have my checkout ID ready, go ahead and purchase it for me.

## When to prefer this

Use this endpoint when you need to programmatically purchase a monthly Laevitas Premium subscription via USDC payment using the x402 protocol, particularly when automating subscription activation for crypto derivatives market data access without requiring a web browser interaction.

## Known failure modes

- Invalid or expired checkoutId UUID returns an error
- Insufficient USDC balance causes payment failure
- Duplicate purchase attempt for already-active subscription may be rejected
- Network or payment protocol errors during x402 transaction
- Malformed UUID format in checkoutId field

## How this service works

Professional market data API for crypto derivatives, spot markets, prediction markets, Hyperliquid HyperCore data, proprietary volatility surfaces, and analytics.

## Authentication

Use an API key for authenticated REST requests:

```http
X-API-Key: your-api-key-here
```

Most data endpoints also support x402 pay-per-request without an API key.

**Subscriptions with USDC:** Premium and Enterprise can be purchased on Base or Solana for a month, a quarter, six months or a year. Access is prepaid, with no automatic renewal. [Buy a subscription](https://v3.laevitas.ch/profile/subscription/wallet) or read the [USDC subscription guide](/x402#subscriptions).

The subscription belongs to your signed-in Laevitas account; wallet sign-in does not require an email. Enterprise users generate an API key in V3 after activation. Plan and billing-period limits still apply. Subscription purchases are separate from API credit bundles.

For Claude MCP, add `https://apiv2.laevitas.ch/api/v1/mcp`, select **Sign in now → Register automatically**
with no custom headers, and authorize with your API key on the Laevitas page.
Do not enter a client ID or secret manually. All OAuth clients require PKCE S256.
Connection guide: [MCP setup](/mcp). CIMD / published client identity is not supported.

| Resource | Path |
| --- | --- |
| OpenAPI JSON | `GET /openapi.json` |
| x402 discovery | `GET /.well-known/x402` |
| Changelog | `GET /api/v1/changelog` |
| WebSocket docs | `GET /websocket` |

## REST Surfaces

| Surface | Examples |
| --- | --- |
| Instruments | Cross-market contract reference data |
| Futures | OHLCVT, trades, tickers, orderbook, liquidations, carry |
| Perpetuals | OHLCVT, trades, funding, open interest, orderbook, liquidations |
| Options | OHLCVT, trades, Greeks, volatility, flow, dealer GEX |
| Options Backtests | Strategy templates, asynchronous submission, status, combined results, cancellation |
| Vol Surface | Proprietary surface snapshots, slices, strikes, term structure, risk |
| Spot | OHLCVT, ticker, trades, volume, L2 orderbook, snapshots |
| Predictions | Polymarket instruments, categories, trades, ticker history |
| Hyperliquid - HyperCore | Node-derived fills, liquidations, positions, funding, TWAPs, resting orders, L2 books |
| Analytics | Realized volatility and derived metrics |

## Pagination

Backtests are asynchronous jobs, not paginated market-data queries. Start with
`GET /api/v1/options/backtests/strategies`, submit with `POST /api/v1/options/backtests`,
then poll `/{id}` and retrieve `/{id}/result`. These responses have no data/meta wrapper.

Paginated endpoints return the cursor at `meta.next_cursor`. Pass that value back as the `cursor` query parameter to fetch the next page.

## WebSocket Streaming

Real-time streams are documented at `/websocket`.

| Data | Channel pattern |
| --- | --- |
| Trades | `trades.{market}.{exchange}.{instrument}` |
| OHLC ticker | `ohlc.ticker.{market}.{exchange}.{instrument}.{timeframe}` |
| OHLCVT | `ohlc.vt.{market}.{exchange}.{instrument}.{timeframe}` |

Variables: `market` is one of `perpetuals`, `futures`, `options`, or `spot`; `timeframe` is one of `1m`, `5m`, `15m`, `1h`, `4h`, or `1d`.

## Quick Start

```bash
curl "https://apiv2.laevitas.ch/api/v1/futures/ohlcvt?exchange=deribit&instrument_name=BTC-PERPETUAL" \
  -H "X-API-Key: your-api-key-here"
```

## Output

Returns a JSON object with a 'state' field indicating the subscription status (e.g. 'active') after a successful USDC payment of $50 for one month of Premium access.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "checkoutId": {
   "type": "string",
   "format": "uuid",
   "description": "Account quote ID."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "state": "active"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/laevitas-premium-monthly-subscription-purchase-808df766/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apiv2.laevitas.ch](https://www.zero.xyz/host/apiv2.laevitas.ch/llms.txt)