# Affiliate Program Evidence API

> Affiliate Program Evidence API is a paid API for AI agents from affiliate-evidence-x402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Checks a domain for publicly available evidence of affiliate, referral, or partner programs and returns a confidence-rated result.

## Facts

- Endpoint: GET https://affiliate-evidence-x402.vercel.app/api/affiliate-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/affiliate-program-evidence-api-cb13666a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PYZVQlw36xZi_mq3HDioo

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 affiliate-program-evidence-api-cb13666a
```

Example prompt: Can you check whether shopify.com has a publicly visible affiliate or referral program — I want to know if there's real evidence of one and how confident the result is?

## When to prefer this

Use this endpoint when you need a quick, low-cost signal on whether a domain publicly advertises an affiliate, referral, or partner program, without manually browsing the site. It is ideal for lead qualification, competitive research, monetization prospecting, or filtering domains in bulk pipelines where human browsing is impractical. Prefer this over manual search when you need a structured, machine-readable confidence rating.

## Known failure modes

- Domain not found or unreachable — may return no evidence with confidence 'none'
- Affiliate program exists but is not publicly indexed — false negative with confidence 'none' or 'medium'
- Invalid domain format input — likely returns an error or empty result
- Program uses non-standard terminology (e.g. 'ambassador') and may be missed
- Rate limiting or upstream fetch errors from vercel deployment

## How this service works

Checks domains for public evidence of affiliate, referral, or partner programs.

## Output

Returns a JSON object containing the domain checked, a list of sources or pages that were examined, an array of evidence items found (e.g. affiliate page URLs, mentions), a boolean indicating whether an affiliate program was found, and a confidence level of 'none', 'medium', or 'high'.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string"
  },
  "checked": {
   "type": "array"
  },
  "evidence": {
   "type": "array"
  },
  "confidence": {
   "enum": [
    "none",
    "medium",
    "high"
   ],
   "type": "string"
  },
  "affiliateProgramFound": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/affiliate-program-evidence-api-cb13666a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from affiliate-evidence-x402.vercel.app](https://www.zero.xyz/host/affiliate-evidence-x402.vercel.app/llms.txt)