# X402 Hub – Cellystial Endpoint

> X402 Hub – Cellystial Endpoint is a paid API for AI agents from x402-hub.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-10-11).

Accepts a query string and returns data from the Cellystial upstream API, gated by x402 micropayment on Base

## Facts

- Endpoint: POST https://x402-hub.vercel.app/api/cellystial?utm_source=zero.xyz
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-hub-cellystial-endpoint-704c8aba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wEPVF5ZJDm6-VUMy37MXl

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 x402-hub-cellystial-endpoint-704c8aba -d '<json body>'
```

Example prompt: Query the Cellystial endpoint on X402 Hub with the question 'what are the latest celestial events visible tonight?' and pay the micropayment automatically.

## When to prefer this

Choose this endpoint when you need to programmatically access Cellystial data and are operating in an x402-enabled micropayment environment on Base, paying only $0.08 USDC per query with no subscription required.

## Known failure modes

- Payment failure: insufficient USDC balance on Base causes 402 rejection before query executes
- Invalid query: malformed or empty query string returns upstream error in the data field
- Upstream unavailable: Cellystial service downtime results in error propagated through the data object
- Rate limiting: excessive requests may trigger throttling from either the hub or upstream provider

## How this service works

63 paid API endpoints protected by x402 micropayments on Base

## Output

A JSON object with a 'data' field containing the upstream Cellystial API's response to the submitted query — exact structure depends on the query type but follows Cellystial's native response format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string",
   "description": "Query parameter for the API"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object",
   "description": "Response data from upstream API"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-hub-cellystial-endpoint-704c8aba/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-hub.vercel.app](https://www.zero.xyz/host/x402-hub.vercel.app/llms.txt)