# Optix402 Buyer Retention Analytics

> Optix402 Buyer Retention Analytics is a paid API for AI agents from optinx402.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns the buyer retention rate for a given domain within the x402 ecosystem

## Facts

- Endpoint: GET https://optinx402.vercel.app/api/buyer-retention/%7Bdomain%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/optix402-buyer-retention-analytics-e0d12a35
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UcF8b9js0tnO1ipqJeReD

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 optix402-buyer-retention-analytics-e0d12a35
```

Example prompt: What's the buyer retention rate for the domain api.myservice.com in the x402 marketplace?

## When to prefer this

Use this endpoint when you need to understand how well a specific x402 API domain retains its buyers over time — particularly useful for x402 API operators benchmarking customer loyalty, or marketplace analysts studying ecosystem stickiness for individual providers.

## Known failure modes

- Domain not found in x402 ecosystem — returns empty or zero retention data
- Invalid domain format in path parameter — may return 4xx error
- Domain has no buyer history — retention rate may be null or 0
- Service unavailable on Vercel deployment — returns 5xx
- Insufficient payment or x402 payment failure — request rejected

## How this service works

Real-time analytics for the x402 ecosystem. 30 endpoints covering market intelligence, buyer analytics, competitive analysis, revenue tracking, and ecosystem health.

## Output

A JSON object containing a retention_rate field (e.g. 0.4) representing the fraction of buyers who returned to make repeat purchases on the specified domain within the x402 ecosystem.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "retention_rate": 0.4
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/optix402-buyer-retention-analytics-e0d12a35/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from optinx402.vercel.app](https://www.zero.xyz/host/optinx402.vercel.app/llms.txt)