# Lookproof TLS-RPT Record Checker

> Lookproof TLS-RPT Record Checker is a paid API for AI agents from api.lookproof.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Checks a domain's TLS-RPT DNS record (_smtp._tls TXT) for RFC 8460 compliance, validating the v=TLSRPTv1 version tag and rua report address format.

## Facts

- Endpoint: GET https://api.lookproof.dev/v1/mail/tlsrpt?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lookproof-tls-rpt-record-checker-ed492581
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dUyT4Zcgh8p2rFOFnuk3z

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 lookproof-tls-rpt-record-checker-ed492581
```

Example prompt: Can you check whether acme.com has a valid TLS-RPT record set up — I need to know if it has the correct v=TLSRPTv1 tag and a properly formatted rua reporting address before we enable MTA-STS?

## When to prefer this

Use this endpoint when you need to specifically verify RFC 8460 TLS-RPT DNS record compliance for a domain, particularly when setting up or auditing SMTP TLS reporting infrastructure, optionally as a prerequisite check before deploying MTA-STS. Prefer this over generic DNS TXT record lookups because it interprets the TLS-RPT record structure, validates the v=TLSRPTv1 tag, and checks rua address format rather than just returning raw TXT data.

## Known failure modes

- Domain has no TLS-RPT record at _smtp._tls — returns absence or not-found status
- Record exists but missing v=TLSRPTv1 tag — compliance failure reported
- Multiple rua tags or malformed URI schemes detected — flagged as non-compliant
- Domain parameter missing or malformed — input validation error
- DNS resolution failure or timeout for the domain — returns lookup error
- Punycode or internationalized domain not normalized — may require preprocessing

## How this service works

Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.

## Output

Returns the parsed TLS-RPT DNS record found at _smtp._tls.<domain>, including the raw TXT record value, whether it contains a valid v=TLSRPTv1 version tag, and the rua report destination addresses (mailto: or https: URIs), along with RFC 8460 compliance status and any detected issues.

## 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",
     "title": "DomainInput",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "title": "Domain",
       "examples": [
        "example.com"
       ],
       "maxLength": 1024,
       "minLength": 1
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lookproof-tls-rpt-record-checker-ed492581/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.lookproof.dev](https://www.zero.xyz/host/api.lookproof.dev/llms.txt)