> ## Documentation Index
> Fetch the complete documentation index at: https://docs.signalark.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Account & Contact Enrichment

> Learn how SignalArk automatically builds firmographic profiles and discovers contacts.

SignalArk’s enrichment pipeline ensures that your accounts have the necessary firmographic and technographic data to accurately calculate ICP fit and route Go-To-Market plays.

## Firmographic Enrichment Pipeline

Our platform uses a waterfall approach to enrichment, ensuring high match rates while managing costs effectively.

<Steps>
  <Step title="Primary Provider: TheCompaniesAPI (TCA)">
    For all firmographic data (industry, employee count, location, revenue estimates), **TheCompaniesAPI** is queried first. It provides high-quality company data at the best margin.
  </Step>

  <Step title="Fallback Provider: People Data Labs (PDL)">
    If TCA cannot fulfill the request or returns incomplete data for critical fields, the pipeline falls back to **People Data Labs**.
  </Step>

  <Step title="Tech Stack Scanner">
    SignalArk automatically detects the technologies installed on the target account's website, which is crucial for displacement and complementary GTME plays.
  </Step>
</Steps>

<Note>
  Enrichment is automatically triggered when an account is created, imported via CSV, or processed through the ABM Intake pipeline.
</Note>

## Contact Auto-Discovery

Finding the right persona to contact is just as important as identifying the right account. SignalArk includes an automated contact discovery engine.

When an account shows high intent or is prioritized for outreach:

1. **Persona Search:** We query PDL (as TCA does not support people search) to find contacts matching your configured target personas (e.g., CISO, VP of Sales, CFO).
2. **Email Discovery:** Once a contact is identified, SignalArk uses **Hunter.io** alongside pattern guessing to resolve and verify their corporate email address.

## Credit Metering

Enrichment actions consume credits from your workspace balance:

* **Waterfall Firmographic Enrich:** 1 Credit
* **LinkedIn Profile Enrich:** 1 Credit
* **Contact/People Search:** 3 Credits

You can view your total usage and limits in **Settings > Billing**.