# is-email-hosted-by-titan

> is-email-hosted-by-titan is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Checks whether a domain's email is hosted by Titan by looking up its MX records and matching them against Titan's mail-exchanger patterns.

## Facts

- Endpoint: GET https://email.intel.rallylive.ca/email/hosted-by/titan?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/is-email-hosted-by-titan-eefeddd3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cVcSv00M6u8NVbSRxoJnS

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 is-email-hosted-by-titan-eefeddd3
```

Example prompt: Can you check if the domain acme.com has its email hosted by Titan — I need to know the MX records and whether any of them matched Titan's mail-exchanger patterns?

## When to prefer this

Use this endpoint when you need to determine specifically whether a domain is hosted by Titan (not just any email provider). It is purpose-built for Titan detection using MX record pattern matching via Cloudflare DoH, making it more reliable than generic DNS tools. Choose this over a generic MX lookup when your workflow requires confirmed Titan-or-not answers for deliverability audits, sales targeting, or migration planning.

## Known failure modes

- Domain has no MX records — returns no match with empty MX list
- Invalid or non-existent domain — DNS lookup fails or returns error
- Cloudflare DoH is temporarily unavailable — lookup fails with upstream error
- Domain uses Titan via a non-standard MX alias not in pattern list — false negative possible
- Missing or malformed query parameter — returns validation error

## How this service works

Is the domain's email hosted by titan? Looks up the MX records (Cloudflare DoH) and matches them against titan's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverability, sales and migration work. $0.01 per lookup.

## Output

Returns a yes/no answer indicating whether the domain's email is hosted by Titan, along with the full list of MX hosts retrieved via Cloudflare DNS-over-HTTPS and the specific MX records that matched Titan's known mail-exchanger patterns.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/is-email-hosted-by-titan-eefeddd3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email.intel.rallylive.ca](https://www.zero.xyz/host/email.intel.rallylive.ca/llms.txt)