# Enrichment Providers



Each enrichment provider is its own card on the **Integrations** screen. They
do not run separately: connected providers join the same enrichment chain, and
[Enrichment](https://www.withsurface.com/docs/platform/leads/enrichment) covers which source wins when several
can answer the same field.

## What Triggers What [#what-triggers-what]

Every provider resolves fields from one of two inputs:

* **An email address**, which gets you the person: name, title, LinkedIn, phone.
* **A domain**, which gets you the company: size, industry, revenue.

A provider that only takes a domain cannot tell you anything about a person, no
matter how good its data is. That is the first thing to check when a provider
returns nothing.

## Connect These Today [#connect-these-today]

| Provider               | Auth                          | From an email                                                  | From a domain                                                                          |
| ---------------------- | ----------------------------- | -------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| **Surface Enrichment** | **None.** Provided by Surface | First name, last name, title, LinkedIn, phone, profile picture | Company, employees, industry, revenue, plus address fields                             |
| **Apollo**             | Your API key                  | First name, last name, title, LinkedIn, phone, profile picture | Company, employees, industry, revenue, plus address fields                             |
| **Hunter**             | Your API key                  | First name, last name, title, phone, LinkedIn                  | Company, employees, industry, revenue                                                  |
| **Lusha**              | Your API key                  | First name, last name, title, phone, LinkedIn                  | Company, employees, industry                                                           |
| **ZoomInfo**           | Your API key                  | First name, last name, title, phone, LinkedIn                  | Company, employees, industry, revenue                                                  |
| **Similarweb**         | Your API key                  | Nothing. Domain only                                           | Company, employees, industry, revenue, **monthly website visits**, company description |

**Start with Surface Enrichment.** It needs no key and no account, and it
covers both person and company fields. Add a paid provider when you have a
specific gap, not on principle.

**Similarweb is the odd one and the interesting one.** It resolves no person
fields at all, but it is the only provider that returns **monthly website
visits** and a company description, which are useful for sizing an account
rather than identifying a person. It requires a Similarweb **Sales
Intelligence** subscription; a plain Similarweb account is not enough.

Where to generate each key:
[Apollo](https://apolloacademy.com/api-keys) ·
[Hunter](https://hunter.io/api-keys) ·
[Lusha](https://dashboard.lusha.com/enrich/api) ·
[ZoomInfo](https://api-docs.zoominfo.com) ·
[Similarweb](https://developers.similarweb.com/docs/authentication)

## Cards You Will See but Cannot Connect [#cards-you-will-see-but-cannot-connect]

| Provider             | Why not                                                                                         |
| -------------------- | ----------------------------------------------------------------------------------------------- |
| **Clearbit**         | The card is marked coming soon and the Connect action is disabled                               |
| **People Data Labs** | Marked coming soon, and it declares no fields at all, so there is nothing for it to resolve yet |

Two more appear on the Integrations screen under Enrichment but are not
enrichment providers in the registry at all: **Clay** and **Ocean.io** are
coming-soon cards with no backend behind them.

## What Enrichment Feeds [#what-enrichment-feeds]

Enriched fields land on the [Lead Data Layer](https://www.withsurface.com/docs/platform/leads) record, which is
what [scoring](https://www.withsurface.com/docs/platform/lead-agents/scoring),
[routing](https://www.withsurface.com/docs/platform/scheduling/routing) and every agent reads. They also fill
form fields at answer time when a form is configured to autofill.

[Enrichment →](https://www.withsurface.com/docs/platform/leads/enrichment) ·
[Integrations directory](https://www.withsurface.com/docs/platform/integrations)