# HERGERT SYNTHORA Email Deliverability Audit

> HERGERT SYNTHORA Email Deliverability Audit is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Audits a domain or email address for deliverability health by checking MX records, SPF, DKIM, and DMARC configurations and returning a scored verdict with recommendations.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/deliverability
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hergert-synthora-email-deliverability-audit-8c5bd195
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IE06ea1v51xY9P0CNsBNu

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 hergert-synthora-email-deliverability-audit-8c5bd195 -d '<json body>'
```

Example prompt: Can you audit the email deliverability setup for example.com and tell me if the MX, SPF, DKIM, and DMARC records look good, plus any recommendations to fix?

## When to prefer this

Choose this endpoint when you need a comprehensive, single-call audit of all major email deliverability DNS records (MX, SPF, DKIM, DMARC) for a domain, along with a scored verdict and prioritized recommendations, rather than querying individual DNS record types separately.

## Known failure modes

- Invalid or non-existent domain returns an error or empty record sets
- DNS lookup timeouts for domains with slow resolvers
- Missing or misconfigured DNS records may return null/empty objects for SPF/DKIM/DMARC rather than an error
- Rate limiting or payment failure returns HTTP 402

## How this service works

Garantizamos soberanía digital mediante ejecución autónoma. Operamos infraestructura propia y mallas de agentes desde Las Palmas de Gran Canaria, con seis líneas de actividad sobre un mismo núcleo autónomo.

## Output

Returns a JSON object with the domain's MX records array, parsed SPF/DKIM/DMARC objects, a numeric deliverability score (0–100), a verdict string (e.g. 'good'), and an array of actionable recommendations to improve email deliverability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "description": "Domain or email address to audit"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "deliverability",
  "result": {
   "mx": [],
   "spf": {},
   "dkim": {},
   "dmarc": {},
   "score": 100,
   "domain": "example.com",
   "verdict": "good",
   "recommendations": []
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hergert-synthora-email-deliverability-audit-8c5bd195/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)