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Find a verified work email in under a minute

Deepline is a CLI and API for GTM data enrichment. It runs waterfall searches across 44+ providers (Apollo, Hunter, Prospeo, etc.) so you get more results than any single tool, and only pay for the provider that finds a hit.

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Watch the setup

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1. Install (30 seconds)

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Prerequisites

  • Node.js 20+
  • Python 3.10+
  • npm
  • Claude Code or any AI coding agent

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Install CLI

This downloads the deepline binary and adds it to your PATH: 
curl -s "https://code.deepline.com/api/v2/cli/install" | bash
The install script handles authentication automatically — no extra steps needed.

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2. Use the skill in Claude Code

The Deepline skill auto-syncs when you install the CLI. In Claude Code, type: 
/deepline-gtm Find a verified work email for Jane Smith at Stripe
The /deepline-gtm prefix tells Claude Code to use the Deepline skill, which knows all 44+ providers, waterfall logic, and cost optimization. Describe what you want in plain English after the prefix.

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3. Run your first recipe

The install script will automatically start a guided wizard to pick and run your first recipe. You can also come back to it any time with deepline quickstart. Or type directly in Claude Code: 
/deepline-gtm Find the work email for a Chief Marketing Officer in NYC
That’s it. Deepline runs a waterfall across multiple providers and returns a verified work email. 
deepline tools execute person_search_to_email_waterfall \
  --payload '{"title":"Chief Marketing Officer","location":"New York City"}'
The waterfall tries multiple providers and stops at the first valid hit. You only pay for the one that finds the email. This gets 20-40% more emails than any single provider (Instantly).

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What just happened

  1. Deepline searched for a CMO in NYC across prospecting providers
  2. It ran a waterfall across email providers
  3. The first provider to return a valid, verified email wins
  4. You paid for one successful lookup — typically 0.3-0.4 credits

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Scale it up

Got a list? Just ask: 
/deepline-gtm I have a CSV with company names and domains. Find work emails for the VP of Sales at each one.
Deepline reads your file, picks the right waterfall, and enriches every row. Pilot mode: Add “just test on the first 2 rows” to any prompt to review before processing the full file.

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Next steps

CLI Concepts

How tools, payloads, and waterfall execution work under the hood.

Playground

Batch-enrich CSVs locally with row-level provider routing.

Email Waterfall Recipe

Step-by-step: find verified emails for a list of contacts.

Provider Integrations

Per-provider guides, schemas, and sample outputs.

I Have X, I Want Y

Pick the right workflow based on what data you already have.

Example Skills

Open-source GTM workflow templates on GitHub.
Reach us: /deepline-feedback in Claude Code, or team@deepline.com.