# Interzoid Email Trust Score API

> Interzoid Email Trust Score API is a paid API for AI agents from api.interzoid.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Scores and validates an email address for trustworthiness using AI, returning a numeric trust score and reasoning

## Facts

- Endpoint: GET https://api.interzoid.com/emailtrustscore
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/interzoid-email-trust-score-api-c470d977
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jc2imaAw3Y8Z2mcWd5GTI

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 interzoid-email-trust-score-api-c470d977
```

Example prompt: Can you check how trustworthy the email address john.smith@acmecorp.com looks — I want a trust score and an explanation of why it scored that way before I reach out to them.

## When to prefer this

Use this endpoint when you need AI-powered trust scoring with human-readable reasoning for individual email addresses, especially when you want to distinguish corporate/legitimate emails from suspicious or low-quality ones. Prefer this over basic syntax validators when you need a risk/trust dimension beyond simple format checking.

## Known failure modes

- Missing or empty 'lookup' query parameter returns an error response
- Malformed email string may return a low score or error
- Invalid API key or insufficient credits returns authentication/payment error
- Rate limiting may occur if too many requests are made in quick succession

## How this service works

Get an email trust score and analysis for an email address. Validates deliverability, identifies disposable/temporary addresses, and provides risk assessment with a numeric trust score from 0-99.

## Output

A JSON object containing: Code (success/failure status), Email (the input email echoed back), Score (numeric trust score 0-100), Credits (remaining credits), and Reasoning (AI-generated plain-language explanation of why the email received that score, e.g. domain type, name pattern plausibility, corporate vs. free provider).

## Example request

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

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "lookup"
     ],
     "properties": {
      "lookup": {
       "type": "string",
       "description": "Email address to score and validate"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "Code": "Success",
  "Email": "test@example.com",
  "Score": "75",
  "Credits": "0",
  "Reasoning": "Valid email, corporate domain, moderate trust level with realistic name pattern."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/interzoid-email-trust-score-api-c470d977/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.interzoid.com](https://www.zero.xyz/host/api.interzoid.com/llms.txt)