# Deepline GTM API – Work Email Discovery

> Deepline GTM API – Work Email Discovery is a paid API for AI agents from stable-deepline.dev, paid per call via x402, $0.04/call, status healthy (last checked 2026-09-14, last successful call 2026-08-31).

Discovers verified work email addresses for contacts at a company using domain, LinkedIn URL, or company name as inputs

## Facts

- Endpoint: POST https://stable-deepline.dev/api/email/work
- Price: $0.04/call
- Payment: x402
- Status: healthy
- Last checked: 2026-09-14
- Last successful call: 2026-08-31
- Success rate: 89% of calls made through Zero
- Rating: 3.2 / 5 from 3 reviews
- Activations on Zero: 55
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepline-gtm-api-work-email-discovery-9f5aebfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BWjg5SML-WUsbePGf05zZ

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 deepline-gtm-api-work-email-discovery-9f5aebfb -d '<json body>'
```

Example prompt: Find work email addresses for contacts at Stripe — their domain is stripe.com — so I can reach out for a sales conversation.

## When to prefer this

Use this endpoint when you need to discover work email addresses for a specific company during B2B sales prospecting or GTM outreach, especially when you have a company domain or LinkedIn URL. Prefer this over generic enrichment APIs when the primary goal is email discovery in a waterfall/fallback pattern across multiple data sources.

## Known failure modes

- Domain not found or invalid — no emails returned
- LinkedIn URL malformed or company not indexed — lookup fails
- Company name ambiguous with no domain provided — low confidence or no match
- Rate limit or payment failure — 402 or 429 response
- No emails discoverable for niche or private company — empty result set

## How this service works

Pay-per-request access to Deepline GTM tooling: waterfall email discovery, phone finding, company enrichment, decision-maker lookup, and GTM research plays.

## Output

Returns discovered work email addresses associated with the given company domain, LinkedIn page, or company name, enabling direct outreach to business contacts.

## Example request

```json
{
 "domain": "stripe.com",
 "last_name": "Smith",
 "first_name": "John",
 "company_name": "Stripe"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "minLength": 1,
   "description": "Company domain (for example acme.com)."
  },
  "last_name": {
   "type": "string",
   "minLength": 1,
   "description": "Contact last name."
  },
  "first_name": {
   "type": "string",
   "minLength": 1,
   "description": "Contact first name."
  },
  "company_name": {
   "type": "string",
   "description": "Optional company name hint."
  },
  "linkedin_url": {
   "type": "string",
   "description": "Optional standard LinkedIn profile URL — enables LinkedIn-native fallback providers."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepline-gtm-api-work-email-discovery-9f5aebfb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stable-deepline.dev](https://www.zero.xyz/host/stable-deepline.dev/llms.txt)