# Tomba Email Count by Domain

> Tomba Email Count by Domain is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns the total count of email addresses for a domain, broken down by department and seniority level.

## Facts

- Endpoint: GET https://x402.orthogonal.com/tomba/v1/email-count
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tomba-email-count-by-domain-f7581f1b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_53pFgPiVgO7flWJmUr49G

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 tomba-email-count-by-domain-f7581f1b
```

Example prompt: How many email addresses are available for stripe.com, and can you break them down by department and seniority?

## When to prefer this

Use this endpoint when you need a quick quantitative overview of email coverage for a domain before committing to a full email search or enrichment workflow. Ideal for prioritizing outreach targets by assessing the size and composition of a company's indexed email addresses by department and seniority, without retrieving actual email addresses.

## Known failure modes

- Domain not found or not indexed — returns zero counts
- Invalid domain format — likely a 400 or validation error
- Domain too new or obscure — returns minimal or empty breakdown
- Payment failure — 402 response if USDC payment not processed
- Rate limiting — too many requests in a short period

## How this service works

Get the count of email addresses for a domain, broken down by department and seniority.

## Output

Returns the total number of email addresses indexed for the given domain, segmented by department (e.g. engineering, sales, marketing) and seniority level (e.g. C-suite, manager, individual contributor).

## 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": {
      "domain": {
       "type": "string",
       "description": "Domain name, e.g. stripe.com"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tomba-email-count-by-domain-f7581f1b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orthogonal.com](https://www.zero.xyz/host/x402.orthogonal.com/llms.txt)