# SEMrush Content Gap Analysis - Find Missing Keywords (`alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords`) Actor

Find content gaps and untapped keyword opportunities using SEMrush data and your own API key (BYOK). Discover keywords your competitors rank for that you don't, and identify weak spots where you rank lower
Missing Keywords
Weak Keywords
Untapped Keywords

- **URL**: https://apify.com/alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords.md
- **Developed by:** [The Howlers](https://apify.com/alizarin_refrigerator-owner) (community)
- **Categories:** SEO tools, Developer tools, Other
- **Stats:** 5 total users, 0 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $0.01 / 1,000 results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## SEMrush Content Gap Analysis - Find Missing Keywords

Discover content gaps - keywords competitors rank for that you don't. Find untapped keyword opportunities with SEMrush data. BYOK (Bring Your Own Key) - use your SEMrush API key.

**BYOK (Bring Your Own Key)** -- you provide your own API credentials.

***

### Before You Start

This actor requires your own API credentials to fetch real data.

**Where to get your key:** Your SEMrush API key. Get it from SEMrush → My Profile → API → Subscription Info

***

### Quick Start

#### Run with real data

```json
{
  "semrushApiKey": "YOUR_API_KEY_HERE",
  "yourDomain": "example.com",
  "competitors": [
    "competitor1.com",
    "competitor2.com"
  ],
  "database": "us",
  "gapType": "missing",
  "keywordLimit": 100,
  "minVolume": 100,
  "maxDifficulty": 70,
  "webhookPlatform": "custom"
}
```

***

### Input Parameters

| Parameter | Type | Default | Required | Description |
|-----------|------|---------|----------|-------------|
| `semrushApiKey` | string | - | Yes\* | Your SEMrush API key. Get it from SEMrush → My Profile → API → Subscription Info |
| `yourDomain` | string | - | No | Your domain to analyze gaps for (e.g., yoursite.com) |
| `competitors` | array | - | No | Competitor domains to compare against (up to 4) |
| `database` | string | `"us"` | No | SEMrush database/country to use for data |
| `gapType` | string | `"missing"` | No | Type of content gap to find |
| `keywordLimit` | integer | `100` | No | Max gap keywords to return |
| `minVolume` | integer | `100` | No | Filter keywords below this monthly volume |
| `maxDifficulty` | integer | `70` | No | Filter keywords above this difficulty (0-100) |
| `webhookUrl` | string | - | No | Optional webhook URL to send results (Zapier, Make, n8n, or custom) |
| `webhookPlatform` | string | `"custom"` | No | Select your webhook platform for optimized payload formatting |

***

### Pricing

This actor uses **pay-per-event** billing:

| Event | Description | Price |
|-------|-------------|-------|
| Analysis Completed | Each content gap analysis completed | $0.05 |

***

### Troubleshooting

#### "API key is required"

- Add your API key in the input

#### "API error 403" or "Unauthorized"

Your API key is invalid, expired, or doesn't have access to this specific API endpoint. Double-check your key and account permissions.

#### "API error 429" or "Rate limit"

Too many requests. Wait a minute and try again, or reduce the number of items per run.

#### No results or empty dataset

Check the run log for error messages. Common causes:

- Invalid input format (check the examples above)
- API key without proper permissions
- The target data doesn't exist or is too small to track

#### How do I test without an API key?

***

**Built by John Rippy | [Actor Arsenal](https://actorarsenal.com)**

# Actor input Schema

## `semrushApiKey` (type: `string`):

Optional. Your own SEMrush API key (SEMrush -> My Profile -> API). Leave empty to use the actor's built-in access, billed per event.

## `yourDomain` (type: `string`):

Your domain to analyze gaps for (e.g., apify.com)

## `competitors` (type: `array`):

Competitor domains to compare against (up to 4)

## `database` (type: `string`):

SEMrush database/country to use for data

## `gapType` (type: `string`):

Type of content gap to find

## `keywordLimit` (type: `integer`):

Max gap keywords to return

## `minVolume` (type: `integer`):

Filter keywords below this monthly volume

## `maxDifficulty` (type: `integer`):

Filter keywords above this difficulty (0-100)

## `webhookUrl` (type: `string`):

Optional webhook URL to send results (Zapier, Make, n8n, or custom)

## `webhookPlatform` (type: `string`):

Select your webhook platform for optimized payload formatting

## `demoMode` (type: `boolean`):

Return sample data without using SEMrush API (for testing)

## Actor input object example

```json
{
  "yourDomain": "apify.com",
  "competitors": [
    "zapier.com"
  ],
  "database": "us",
  "gapType": "missing",
  "keywordLimit": 100,
  "minVolume": 100,
  "maxDifficulty": 70,
  "webhookPlatform": "custom",
  "demoMode": false
}
```

# Actor output Schema

## `results` (type: `string`):

List of missing keywords and content opportunities compared to competitors.

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "yourDomain": "apify.com",
    "competitors": [
        "zapier.com"
    ],
    "demoMode": false
};

// Run the Actor and wait for it to finish
const run = await client.actor("alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "yourDomain": "apify.com",
    "competitors": ["zapier.com"],
    "demoMode": False,
}

# Run the Actor and wait for it to finish
run = client.actor("alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "yourDomain": "apify.com",
  "competitors": [
    "zapier.com"
  ],
  "demoMode": false
}' |
apify call alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,alizarin_refrigerator-owner/semrush-content-gap-analysis---find-missing-keywords"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/AqkTbl7oDvPipgFDT/builds/ghskEr6svOAopndRV/openapi.json