# Tomba Email Sources Lookup

> Tomba Email Sources Lookup is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Finds and returns the web sources where a given email address has been discovered or indexed online.

## Facts

- Endpoint: GET https://x402.orthogonal.com/tomba/v1/email-sources
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tomba-email-sources-lookup-5de377a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6AxuM_N83X9GfgSqHw0FI

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-sources-lookup-5de377a8
```

Example prompt: Can you find out where the email address john.doe@example.com has been found on the web — like which websites or pages it appears on?

## When to prefer this

Use this endpoint when you need to verify the online provenance of an email address, enrich a lead profile by finding where the email was publicly listed, or conduct OSINT research on an email's web presence. Prefer this over general web scrapers when you specifically need structured source data tied to an email address rather than broad web content.

## Known failure modes

- Email not found in any indexed sources — returns empty results
- Invalid or malformed email address input — may return an error or empty response
- Email exists but originates from private/unindexed pages — sources may be incomplete
- Rate limiting or payment verification failure — request rejected
- Newly registered or obscure email addresses may have no indexed sources yet

## How this service works

Find the sources where an email was found on the web.

## Output

A list of web sources — URLs and associated page metadata — where the queried email address has been found or indexed on the web, helping verify email provenance and online presence.

## 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": {
      "email": {
       "type": "string",
       "description": "Email address to find sources for"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tomba-email-sources-lookup-5de377a8/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)