Face Detector API
Overview
To use Face Detector, you need an API key. You can get one by creating a free account and visiting your dashboard.
POST Endpoint
https://api.apiverve.com/v1/facedetectExample
How to call the Face Detector API in different programming languages.
curl -X POST \
"https://api.apiverve.com/v1/facedetect" \
-H "X-API-Key: your_api_key_here" \
-H "Content-Type: application/json" \
-d '{
"url": "https://example.com/group-photo.jpg",
"confidence": 0.5
}'const response = await fetch('https://api.apiverve.com/v1/facedetect', {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
},
body: JSON.stringify({
"url": "https://example.com/group-photo.jpg",
"confidence": 0.5
})
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
payload = {
"url": "https://example.com/group-photo.jpg",
"confidence": 0.5
}
response = requests.post('https://api.apiverve.com/v1/facedetect', headers=headers, json=payload)
data = response.json()
print(data)package main
import (
"fmt"
"io"
"net/http"
"bytes"
"encoding/json"
)
func main() {
payload := map[string]interface{}{
"url": "https://example.com/group-photo.jpg",
"confidence": "0.5"
}
jsonPayload, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/facedetect", bytes.NewBuffer(jsonPayload))
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}{
"status": "ok",
"error": null,
"data": {
"faces": [
{
"x": 142,
"y": 85,
"width": 98,
"height": 112,
"confidence": 0.9847
},
{
"x": 312,
"y": 92,
"width": 87,
"height": 103,
"confidence": 0.9623
},
{
"x": 478,
"y": 78,
"width": 95,
"height": 118,
"confidence": 0.9412
}
],
"faceCount": 3,
"hasFaces": true,
"imageWidth": 640,
"imageHeight": 480,
"averageConfidence": 0.9627,
"imageCoverage": 10.23
},
"code": 200
}Authentication
The Face Detector API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the Face Detector API directly in your browser with live requests and responses.
Parameters
The Face Detector API supports multiple query options. Use one of the following:
Option 1: Detect Faces from Upload
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
image | string | required | Image file upload (JPG, PNG, GIF, WebP supported, max 10MB) | - | - |
confidence | number | optional | Minimum confidence threshold for face detection (0.1 to 1.0) Range: 0.1 - 1 |
Option 2: Detect Faces from URL
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
url | string | required | URL of the image to analyze (JPG, PNG, GIF, WebP supported) | - | |
confidence | number | optional | Minimum confidence threshold for face detection (0.1 to 1.0) Range: 0.1 - 1 |
Response
The Face Detector API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.
Other Response Formats
<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<faces>
<face>
<x>142</x>
<y>85</y>
<width>98</width>
<height>112</height>
<confidence>0.9847</confidence>
</face>
<face>
<x>312</x>
<y>92</y>
<width>87</width>
<height>103</height>
<confidence>0.9623</confidence>
</face>
<face>
<x>478</x>
<y>78</y>
<width>95</width>
<height>118</height>
<confidence>0.9412</confidence>
</face>
</faces>
<faceCount>3</faceCount>
<hasFaces>true</hasFaces>
<imageWidth>640</imageWidth>
<imageHeight>480</imageHeight>
<averageConfidence>0.9627</averageConfidence>
<imageCoverage>10.23</imageCoverage>
</data>
<code>200</code>
</response>
status: ok
error: null
data:
faces:
- x: 142
'y': 85
width: 98
height: 112
confidence: 0.9847
- x: 312
'y': 92
width: 87
height: 103
confidence: 0.9623
- x: 478
'y': 78
width: 95
height: 118
confidence: 0.9412
faceCount: 3
hasFaces: true
imageWidth: 640
imageHeight: 480
averageConfidence: 0.9627
imageCoverage: 10.23
code: 200
| key | value |
|---|---|
| faces | [{x:142,y:85,width:98,height:112,confidence:0.9847},{x:312,y:92,width:87,height:103,confidence:0.9623},{x:478,y:78,width:95,height:118,confidence:0.9412}] |
| faceCount | 3 |
| hasFaces | true |
| imageWidth | 640 |
| imageHeight | 480 |
| averageConfidence | 0.9627 |
| imageCoverage | 10.23 |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
| [ ] Array items: | array[3] | Array of detected faces with bounding boxes and confidence scores | |
â”” x | number | X coordinate of face bounding box top-left corner | |
â”” y | number | Y coordinate of face bounding box top-left corner | |
â”” width | number | Width of face bounding box in pixels | |
â”” height | number | Height of face bounding box in pixels | |
â”” confidence | number | Confidence score for face detection (0.0 to 1.0) | |
faceCountPremium | number | Total number of faces detected in the image | |
hasFaces | boolean | Whether any faces were detected in the image | |
imageWidthPremium | number | Width of the analyzed image in pixels | |
imageHeightPremium | number | Height of the analyzed image in pixels | |
averageConfidencePremium | number | Average confidence score across all detected faces | |
imageCoveragePremium | number | Percentage of image area covered by detected faces |
Headers
Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →
GraphQL AccessALPHA
Access Face Detector through GraphQL to combine it with other API calls in a single request. Query only the face detector data you need with precise field selection, and orchestrate complex data fetching workflows.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
POST https://api.apiverve.com/v1/graphqlquery {
facedetect(
input: {
url: "https://example.com/group-photo.jpg"
confidence: 0.5
}
) {
faces
faceCount
hasFaces
imageWidth
imageHeight
averageConfidence
imageCoverage
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Face Detector API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →
Rate Limiting
Face Detector requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →
Error Codes
The Face Detector API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →
SDKs for Face Detector
Official Face Detector packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →
No-Code Integrations
Face Detector works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →
Frequently Asked Questions
How do I get an API key for Face Detector?
How many credits does Face Detector cost?
Each successful Face Detector API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful face detector lookups.
Can I use Face Detector in production?
The free plan is for testing and development only. For production use of Face Detector, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use Face Detector from a browser?
What happens if I exceed my Face Detector credit limit?
When you reach your monthly credit limit, Face Detector API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.








