# CASSIA Premium Data Opportunity API

> CASSIA Premium Data Opportunity API is a paid API for AI agents from api.cassia-data.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns a relevance-filtered, eligibility-checked, and quality-ranked list of premium data opportunities matching specified criteria

## Facts

- Endpoint: GET https://api.cassia-data.com/api/premium-opportunity
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cassia-premium-data-opportunity-api-dce9eddd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_12AZPsoQIulHC2Ai8uxGC

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 cassia-premium-data-opportunity-api-dce9eddd
```

Example prompt: Can you pull a list of premium data opportunities from CASSIA that match my eligibility and are ranked by quality — I want to see what's currently available?

## When to prefer this

Choose this endpoint when you need a pre-filtered, eligibility-validated, and quality-ranked set of data opportunities rather than raw or unranked data listings. It is particularly useful when you want to avoid manually sifting through low-quality or ineligible data sources and need a machine-readable result suitable for automated downstream processing.

## Known failure modes

- Empty opportunities array returned when no opportunities match the filter criteria or eligibility checks
- Malformed query parameters causing a 400-level error
- Payment not processed (402) if x402 payment header is missing or insufficient
- Service unavailability returning 500-level errors
- Stale or cached results if data freshness is degraded

## How this service works

CASSIA provides relevance-filtered, eligibility-checked and quality-ranked data opportunities through a machine-readable API.

## Output

A JSON object containing a count of matched opportunities and an array of opportunity records, each filtered for relevance and eligibility and ordered by quality rank.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 0,
  "opportunities": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cassia-premium-data-opportunity-api-dce9eddd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cassia-data.com](https://www.zero.xyz/host/api.cassia-data.com/llms.txt)