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

# TrustCall Overview

> Monitor phone number reputation and spam scores

# TrustCall API

TrustCall provides real-time phone number reputation monitoring, including spam scores from major carriers, app scores, and FTC complaints.

## What is TrustCall?

TrustCall monitors your outbound phone numbers to detect:

* **Carrier spam flags** - When carriers label your number as spam/scam
* **App blocking** - When apps like RoboKiller or Nomorobo flag your number
* **FTC complaints** - Consumer complaints filed against your number

## Why Monitor Your Numbers?

<Warning>
  If your outbound numbers are flagged as spam, your calls won't connect - leading to lost business and wasted dialing costs.
</Warning>

Proactive monitoring helps you:

* Identify flagged numbers before they impact your business
* Take corrective action quickly
* Maintain high connection rates

## Available APIs

<CardGroup cols={2}>
  <Card title="TrustCall Premier" icon="crown" href="/api-reference/trustcall/premier">
    Full-featured API with carrier-specific scores, historical data, and FTC complaints.
  </Card>

  <Card title="One-Time Scan" icon="magnifying-glass" href="/api-reference/trustcall/one-time-scan">
    Check phone number reputation without ongoing monitoring.
  </Card>
</CardGroup>

## TrustCall Premier Features

| Feature              | Description                                         |
| -------------------- | --------------------------------------------------- |
| **Carrier Scores**   | Individual scores from Verizon, AT\&T, and T-Mobile |
| **Average Score**    | Combined score across all carriers                  |
| **Historical Score** | 15-day historical spam score trend                  |
| **App Scores**       | RoboKiller and Nomorobo status                      |
| **FTC Complaints**   | Consumer complaints with details                    |

## Score Values

### Carrier Scores (Verizon, AT\&T, T-Mobile)

| Score        | Meaning                             |
| ------------ | ----------------------------------- |
| `Clean`      | Not flagged by this carrier         |
| `Flagged`    | Marked as spam/scam by this carrier |
| `Processing` | Recently added, not yet checked     |

### Combined Scores (CurrScore, MaxScore)

| Score        | Meaning                         |
| ------------ | ------------------------------- |
| `Clean`      | No spam issues detected         |
| `Medium`     | Some flags detected             |
| `High`       | Significant spam flags          |
| `Processing` | Recently added, not yet checked |

### Historical Score

| Score | Meaning                                             |
| ----- | --------------------------------------------------- |
| `0-1` | No issues in last 15 days                           |
| `2-3` | Occasional flags                                    |
| `4-5` | Frequent flags (50%+ of checks had high spam score) |

## Workflow

<Steps>
  <Step title="Add Numbers">
    Add your outbound phone numbers to TrustCall monitoring.
  </Step>

  <Step title="Monitor Scores">
    TrustCall continuously checks your numbers with carriers.
  </Step>

  <Step title="Check Before Calling">
    Query scores before using a number for outbound calls.
  </Step>

  <Step title="Remove Numbers">
    Remove numbers you no longer use from monitoring.
  </Step>
</Steps>