# Strale Email Reputation Score

> Strale 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 2026-09-15).

Returns a reputation score for an email address to assess trustworthiness, spam risk, and deliverability quality.

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/email-reputation-score
- Price: $0.0324/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-email-reputation-score-75e8cf7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mUZ8gvQT9946wRJPjZ96p

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 strale-email-reputation-score-75e8cf7c
```

Example prompt: Can you check the reputation score for john.doe@example.com and tell me if it looks trustworthy or risky?

## When to prefer this

Choose this endpoint when you need a scored, auditable reputation assessment of an email address — particularly in fraud prevention, identity verification, or lead qualification workflows where a cryptographic audit trail is required. It is especially useful in regulated or compliance-sensitive pipelines where you need to demonstrate due diligence. Prefer it over simple email syntax validators when you need behavioral and domain-level risk signals, not just format checks.

## Known failure modes

- Missing email query parameter returns validation error
- Malformed or non-RFC-compliant email address may return an error or zero-score result
- Unknown or newly registered email domain may yield low-confidence score
- Rate limiting or payment failure via x402 may block the request
- Transient upstream provider outage may cause delayed or empty response

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a reputation score and associated risk signals for the queried email address, including indicators of disposability, spam association, domain quality, and an audit record with a cryptographic chain hash for tamper-evident logging.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "description": "Email address to score"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-email-reputation-score-75e8cf7c/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)