# Email Reputation Score

> Email Reputation Score is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0324/call, status unknown (last checked 2026-10-10).

Calculates a 0-100 trust/risk score for an email address by assessing domain age, MX configuration, disposable domain detection, and provider reputation.

## Facts

- Endpoint: GET https://api.strale.io/x402/email-reputation-score?utm_source=zero.xyz
- Price: $0.0324/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-34e9ec80
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZbaJZIjxYGdzwwKApA2MF

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 api-strale-io-34e9ec80
```

Example prompt: What's the trust score for john.doe@tempmail.org — is it a disposable address or from a reputable provider?

## When to prefer this

Use this endpoint when you need a composite, multi-signal email risk score rather than a simple format check or single-factor validation. Ideal for fraud prevention pipelines, user signup screening, KYC/AML workflows, or any scenario where you need to distinguish legitimate email addresses from disposable, newly registered, or low-reputation ones.

## Known failure modes

- Invalid or malformed email address returns a 400 error
- Domain with no MX records may result in maximum risk score
- Unknown or very new domains may yield conservative high-risk scores
- Payment failure or insufficient USDC balance returns a 402 error

## How this service works

Calculate a trust score for an email address. Assesses domain age, MX configuration, disposable domain detection, and email provider reputation. Returns a 0-100 risk score.

## Output

A numeric risk score between 0 and 100, where higher values indicate higher risk. Includes sub-signals such as domain age, MX record configuration, whether the domain is a known disposable email provider, and overall email provider reputation.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "email": "test.user@gmail.com"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "email"
 ],
 "properties": {
  "email": {
   "type": "string",
   "description": "Email address to score"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "email": {
  "type": "string"
 },
 "factors": {
  "type": "array"
 },
 "risk_level": {
  "type": "string"
 },
 "email_valid": {
  "type": "boolean"
 },
 "reputation_score": {
  "type": "integer"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-34e9ec80/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)